Communications of the Association for Information Systems
Volume 37
Article 22
8-2015
Customer Satisfaction in IS Projects: Assessing the
Role of Process and Product Performance
Dirk Basten
University of Cologne, basten@wiso.uni-koeln.de
Oleg Pankratz
University of Cologne
Follow this and additional works at: htp://aisel.aisnet.org/cais
Recommended Citation
Basten, Dirk and Pankratz, Oleg (2015) "Customer Satisfaction in IS Projects: Assessing the Role of Process and Product
Performance," Communications of the Association for Information Systems: Vol. 37, Article 22.
Available at: htp://aisel.aisnet.org/cais/vol37/iss1/22
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C
ommunications of the
A
ssociation for
I
nformation
S
ystems
Research Paper
ISSN: 1529-3181
Customer Satisfaction in IS Projects: Assessing the
Role of Process and Product Performance
Dirk Basten
Oleg Pankratz
Department of Information Systems and Systems
Development, University of Cologne
basten@wiso.uni-koeln.de
Department of Information Systems and Systems
Development, University of Cologne
Abstract:
Despite extensive research over the past several decades, assessing information system (IS) project success is still a
challenging endeavor. While the traditional approach takes process performance (time and budget) and product
performance (functional and non-functional requirements) into account, the contemporary perspective acknowledges
the more comprehensive character of project success and emphasizes the criticality of stakeholder satisfaction.
Continuing previous research, we propose and test a model with customer satisfaction as the uppermost criterion of
IS project success and process performance and product performance as its determinants. Following recent calls for
researchers to investigate the explicit linkage between success factors and success criteria, we also analyze the
influence of process transparency on process and product performance. We conducted a survey via a questionnaire
with IS experts in Germany. We contribute to a deeper understanding of IS project success by indicating that
customer satisfaction is less a matter of time and budget and that a stronger emphasis should be placed on product
performance. Moreover, our results illuminate the role of process transparency in IS projects showing that it
contributes to both process and product performance.
Keywords: Project Management, Information Systems, Project Success, Process Performance, Product
Performance, Customer Satisfaction, Process Transparency.
The manuscript was received 08/28/2014 and was with the authors 3 months for 2 revisions.
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pp. 430 – 447
August
2015
431
1
Customer Satisfaction in IS Projects: Assessing the Role of Process and Product Performance
Introduction
Information systems (IS) as sets of “interrelated components that collect (or retrieve), process, store, and
distribute information to support decision making and control” (Laudon & Laudon, 2009, p. 46) are highly
important for organizations. Despite decades of research calling for an extended set of success criteria
(Ika, 2009; Judgev & Müller, 2005), organizations still widely rely on adherence to planning (i.e.,
adherence to budget, adherence to schedule, and conformance with requirements) to assess IS project
success (Collins & Baccarini, 2004; Joosten, Basten, & Mellis, 2014; Thomas & Fernández, 2008). This
phenomenon can be explained by (among other reasons) the plainness of measuring these criteria
(Joosten et al., 2014; Pinto & Slevin, 1988a). However, IS projects are typically commissioned by a
customer organization, whose satisfaction is important (Anderson, Fornell, & Legmann, 1994; Anderson &
Sullivan, 1993; Nelson, 2005). Consequently, project managers strive to meet the traditional criteria while
also satisfying the customer1. While budget and schedule are closely related indices that have a rather
short-term character (i.e., they are directly linked to the project), requirements are more likely to have a
long-term character (i.e., they define the product, which the customer organization will apply in the long
run). As such, project managers need to know whether to prioritize the process (i.e., budget and schedule)
or the product (i.e., requirements) in IS projects.
The unsettled question of how to measure IS project success is also reflected in IS research. Whereas IS
success is often assessed in terms of the model by DeLone and McLean (1992, 2003), “determining the
contribution of (IS) projects is a difficult endeavour” (Barclay, 2008, p. 331), and project success in general
might require a new theory (Barclay, 2008; Cuellar, 2010; Glass, 1999). As Ika (2009) emphasizes,
research is particularly in need of studies linking project success criteria and project success factors.
Whereas success criteria are measures by which success is assessed, success factors are aspects
contributing to project success (Cooke-Davies, 2002).
Concerning the former (i.e., project success criteria), a major contrast is the difference between using
traditional criteria such as a project’s adherence to budget, adherence to schedule, and conformance with
requirements (Atkinson, 1999; Lech, 2013; Pinto, 2004) and contemporary criteria such as stakeholder
satisfaction (Baker, Murphy, & Fisher, 2008; Ika, 2009). While the traditional criteria can be seen as the
sole constant in the evolution of IS project success, the general understanding has shifted to a strategic
perspective that focuses on the customer (Ika, 2009; Judgev & Müller, 2005). Nelson (2005) even equals
stakeholder satisfaction to project success. In this context, the customer organization’s satisfaction can be
assumed to be the uppermost criterion because it is crucial for contractor reputation and decisions about
follow-up projects (Anderson et al., 1994; Anderson & Sullivan, 1993). Considering the research shift
towards success criteria related to customer satisfaction (Baker et al., 2008; Basten, Joosten, & Mellis,
2012; Nelson, 2005) and taking into account that adherence-to-planning criteria are still most widely
applied in practice (Collins & Baccarini, 2004; Joosten et al., 2014; Thomas & Fernández, 2008), we need
to analyze the linkage between these two concepts.
Concerning the latter (i.e., project success factors), both research (Joosten et al., 2014; Pankratz &
Loebbecke, 2011; Stavrou, Pankratz, & Basten, 2014) and practice (Böhm & Haselberger, 2012; Cohn,
2009) see transparency of the development process (henceforth: process transparency) as a topic that is
of high importance yet not explicitly addressed in common literature so far. Process transparency refers to
the stakeholders’ perception to have all information relevant to them. Emphasizing the importance of
process transparency in IS projects (Stavrou et al., 2014), managers point to the need of further analyses
with regard to IS project success (Joosten et al., 2014). Such analyses will contribute to a better
understanding of the IS development, which is often treated as a black box (Siau, Long, & Ling, 2010).
Based on the above considerations, we investigate the coherence between customer satisfaction as the
uppermost criterion and its determinants, process performance, and product performance. More precisely,
we assess the relation between process performance and customer satisfaction and the relation between
product performance and customer satisfaction. In this regard, we also analyze whether and which one of
these two determinants is more important for assessing IS project success (i.e., has a higher influence on
customer satisfaction). We also analyze the role of process transparency for IS project success, or, more
precisely, the influence of process transparency on process performance and product performance.
1
In this paper, we differentiate between the customer as organization that commissioned the IS project and end users as that
organization’s individuals who use the developed product.
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To do so, we conducted a questionnaire survey among managers of IS projects and assess their view on
the concepts under consideration. For our investigation, we apply partial least squares (PLS) path
analysis (Lohmöller, 1989). Concerning our core concepts, we build on prior research in IS and marketing
to operationalize process performance and product performance (Wallace, Keil, & Rai, 2004) and
customer satisfaction (Caruana, 2002). Concerning process transparency, we apply items that we
adapted from previous literature (Joosten et al., 2014; Mao, Lee, & Deng, 2008; Pankratz & Loebbecke,
2011).
Our contribution is threefold. First and following contemporary research that equals project success to
stakeholder satisfaction (Nelson, 2005), particularly customer satisfaction (Basten et al., 2012; DeCotiis &
Dyer, 1977; Pankratz & Loebbecke, 2011), we provide a differentiated analysis of the influence of both
process and product performance on customer satisfaction. Second, we go one step further and analyze
the coherence between process performance and product performance. Finally, we contribute to theory
and practice by explicitly accounting for the linkage of a success factor—process transparency—to IS
project success criteria.
This paper proceeds as follows: in Section 2, we present the theoretical underpinnings of IS project
success. In Section 3, we present our research model and related hypotheses. In Section 4, we explain
the strategy applied to collect data from contractors in IS projects and the operationalization of the
research variables. In Section 5, we validate the measurement properties of the constructs and test the
proposed research model. In Section 6, we discuss our findings. Finally, in Section 6, we conclude the
paper with implications for practitioners and directions for future research.
2
Success of Information System Projects
A project in general is “a temporary endeavor undertaken to create a unique product, service, or result”
(Project Management Institute, 2008, p. 5). As such, an IS project can be seen as a temporary and unique
endeavor with the objective to develop, extend, or adapt an information system. In previous research,
many terms have been used to denote the concept of IS project success. Examples include software
project success (Agarwal & Rathod, 2006), project performance (Aladwani, 2002), development project
success (Saarinen & Sääksjärvi, 1992), IT project success (Thomas & Fernández, 2008; Wateridge,
1995), and IS development success (Banker & Kemerer, 1992). In this paper, we use the term IS project
success.
2.1
A Retrospective View
IS project success has been a topic in IS research for decades (Agarwal & Rathod, 2006; Brittain White &
Leifer, 1986; Ginzberg, 1981; Narayanaswamy, Grover, & Henry, 2013; Wateridge, 1995; Yetton, Martin,
Sharma, & Johnston, 2000). Ika (2009) and Judgev and Müller (2005) reflect on studies concerning (IS)
project success published since the 1960s. They reveal that the understanding of (IS) project success has
evolved from the traditional short-term evaluation to a contemporary assessment from a strategic
perspective.
The traditional approach to assess IS project success—transferred from the engineering discipline to IS
projects, probably due to its easy measurability (Pinto & Slevin, 1988b)—considers a project’s adherence
to budget, adherence to schedule, and conformance with requirements (Agarwal & Rathod, 2006). It is
referred to as iron triangle (Atkinson, 1999), triple constraint (Pinto, 2004), or adherence to planning
(Basten et al., 2012), the latter of which we use in this paper. Whereas adherence to planning has a
straightforward and objective character, it has been widely criticized to cover a limited perspective of
success. The criticism stems from the project management and the information system disciplines and
refers to the following shortcomings: 1) adherence to planning is a short-term measure that does not
include customer benefits (Agarwal & Rathod, 2006; Atkinson, 1999); 2) scholars criticize that projects
primarily initiated to realize business benefits should be evaluated in terms of according criteria (Shenhar,
Dvir, Levy, & Maltz, 2001); 3) effort estimation as a fundamental activity of project conceptualizing
(Jurison, 1999) is often defective (Moløkken-Østvold et al., 2004), lacks adequate methods (Agarwal and
Rathod, 2006), and is often distorted by political negotiations (Lederer et al., 1990); and 4) solely relying
on adherence to planning to assess IS project success does not account for the perspective of all
stakeholders (Agarwal & Rathod, 2006).
The contemporary perspective acknowledges the comprehensive character of project success and
includes criteria such as strategic customer objectives, end user satisfaction, and stakeholder benefits
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(Ika, 2009). Prior research has emphasized the criticality of stakeholder satisfaction (Baker et al., 2008),
which has led scholars to consider success as a matter of perspective (Basten et al., 2012; Myers, 1995).
Such perceptions may differ from success assessments in terms of adherence to planning. Anecdotal and
empirical evidence exist for projects failing the traditional criteria but being perceived successful and for
projects satisfying the traditional criteria but being perceived as failures (Baker et al., 2008; Ika, 2009;
Pinto & Slevin, 1988b). Nelson (2005) refers to such mismatching projects as successful failures and
failed successes, respectively. Moreover, Nelson (2005) equals stakeholder satisfaction to success. In this
context, we can assume satisfaction of the customer organization to be the uppermost criterion because it
is crucial for contractor reputation and decisions about follow-up projects (Anderson et al., 1994; Anderson
& Sullivan, 1993).
While research is continuously moving away from relying on adherence to planning (Barclay, 2008), this
criterion is the only constant in the focus of research considering the timely development of IS project
success (Ika, 2009; Judgev & Müller, 2005). Despite the criticism towards this concept, scholars have
argued for supplementing it with additional criteria instead of eliminating planning-related ones (Agarwal &
Rathod, 2006). Considering the research shift towards success criteria related to customer satisfaction
(Baker et al., 2008; Basten et al., 2012; Nelson, 2005) and considering that adherence to planning is still
most widely applied in practice (Collins & Baccarini, 2004; Joosten et al., 2014; Thomas & Fernández,
2008), an analysis of the linkage between these two concepts is likely to reveal important insights for IS
research.
To analyze its relation to customer satisfaction, one can divide adherence to planning into two
components (Keil, Rai, & Liu, 2013; Wallace et al., 2004): 1) process performance as the first component
concerns the project input and is measured in terms of adherence to schedule and budget (Keil et al.,
2013; Wallace et al., 2004), and 2) meeting requirements represents the project output. Whereas several
researchers have explicitly differentiated between meeting functional and non-functional requirements
(Agarwal & Rathod, 2006; Baccarini, 1999; Kappelman, McKeeman, & Zhang, 2006), others have not
(Atkinson, 1999). However, researchers in both cases refer to conformance with (non-)functional
requirements as the deviation between the specified (non-)functional requirements and their actual
implementation (Joosten et al., 2014). To avoid confusion, Agarwal and Rathod (2006) suggest
emphasizing the conceptual difference of functional requirements and non-functional requirements.
Following their argumentation, we include both concepts in our study and, following a majority of authors
(Atkinson, 1999; Jørgensen, 2004; Paulk, Weber, Curtis, & Chrissis, 1995; Rai & Al-Hindi, 2000;
Westerveld, 2003), refer to a project’s conformance with (non-)functional requirements as the concept of
product performance.
2.2
Process Transparency in the Context of IS Projects
Considering growing research on project management alternatives such as agile approaches, critical
success factors have evolved by focusing on stakeholder interaction (Barclay, 2008). In this context,
transparency is a topic in both recent exploratory research (Joosten et al., 2014; Pankratz & Loebbecke,
2011; Stavrou et al., 2014) and the practitioner community (Böhm & Haselberger, 2012; Cohn, 2009). One
can see transparency as highly relevant for project management, but it has been widely neglected so far.
Pankratz and Loebbecke (2011, p. 6) define transparency as “team members incl. [including] project
manager are informed about project plan, status and all events important to them” and uncover that its
extent considerably affects IS project success. While transparency is related to success factors such as
communication (Hyväri, 2006) and stakeholder involvement (Petter, 2008), it has a different focus. For
instance, stakeholders can contribute their ideas but still feel that they are insufficiently informed about the
project progress. As managers have previously emphasized the importance of process transparency in IS
projects (Joosten et al., 2014; Stavrou et al., 2014), we need to further analyze its impact on success
criteria to better understand the IS development process (Siau et al., 2010).
3
Research Model and Hypotheses
Figure 1 presents our research model, which posits relationships between process performance and
customer satisfaction (H1a) and between product performance and customer satisfaction (H1b). Another
relation is postulated between product performance and the relationship between process performance
and customer satisfaction (H2). This moderating effect is modeled as a negative one. Finally, the model
also posits that process transparency can strengthen process performance (H3a) and product
performance (H3b).
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3.1
434
Impact of Process and Product Performance on Customer Satisfaction
Following Myers’ (1995) hermeneutical view, success is a matter of perception. Considering IS projects,
various stakeholders exist, including contractors, customers, project teams, and end users (Baker et al.,
2008). Accordingly, Nelson (2005) equals IS project success to stakeholder satisfaction. Following this
view, two main reasons exist to consider customer satisfaction as the uppermost criterion in IS projects.
First, the customer decides on follow-up projects and a satisfied customer is, thus, crucial for contractor
reputation (Anderson et al., 1994; Anderson & Sullivan, 1993). Second, considering the customer
perspective and the general differentiation between organizational and end user level (Baker et al., 2008),
end users’ (dis-)satisfaction is likely to be reflected in the (dis-)satisfaction of the customer organization.
Following this argumentation, the dependent variable in our study is customer satisfaction, which is in line
with previous research emphasizing the importance of this particular stakeholder group (Basten et al.,
2012; DeCotiis & Dyer, 1977; Pankratz & Loebbecke, 2011).
+H3a
Process
Performance
+H1a
‐H2
Process
Transparency
+H3b
Product
Performance
Customer
Satisfaction
+H1b
Figure 1. Postulated Research Model of Customer Satisfaction
Incorporating traditional research that deems adherence to planning an important success criterion for IS
projects (Pinto & Slevin, 1988b), we differentiate—in line with studies by Wallace et al. (2004) and Keil et
al. (2013)—between process performance and product performance. Regarding both components,
previous research indicates a positive relation to customer satisfaction in IS projects (Baccarini, 1999;
Thomas & Fernández, 2008). Concerning the former, “[s]everal empirical studies show a strong
correlation between [process performance] and customer satisfaction” (Dvir & Lechler, 2004, p. 6).
Concerning the latter, several studies suggest that meeting requirements leads to enhanced customer
satisfaction since product performance is a measure of effectiveness (Baker et al., 2008; Basten et al.,
2012; Kraut & Streeter, 1995; Pinto, 2004). As such, we hypothesize that:
Hypothesis 1a. The higher process performance, the higher the customer’s satisfaction with
the project.
Hypothesis 1b. The higher product performance, the higher the customer’s satisfaction with
the project.
3.2
Relationship between Process and Product Performance
Analyzing the relation between process performance and customer satisfaction and between product
performance and customer satisfaction raises the question of whether one of the determinants is more
important. We assume that process performance is subordinate to product performance for the following
reasons. First, organizations initiate projects to realize business benefits (Shenhar et al., 2001).
Accordingly, fulfilling these long-term objectives is likely to be more important than the short-term criteria
of project time and budget. Second, time and budget are project management criteria and, in most cases,
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Customer Satisfaction in IS Projects: Assessing the Role of Process and Product Performance
do not reflect the needs of all stakeholders (e.g., end users) (Baker et al., 2008). Instead, those needs are
typically addressed by product performance. Finally, time and budget are project management indices that
are often incorrect due to underestimated effort (Moløkken-Østvold et al., 2004) and political negotiations
(Lederer et al., 1990). While these reasons indicate a larger influence of product performance on
customer satisfaction compared to process performance, we also consider the interplay of these
components concerning customer satisfaction. On the one hand, projects that cost more and take longer
to complete yet deliver usable products that satisfy the customer “have become a classic scenario”
(Nelson, 2005, p. 369). On the other hand, projects exist that are completed on-time and on-budget but
fail to satisfy customers due to unfulfilled requirements (Shenhar, Levy, & Dvir, 1997). Both scenarios
show that product performance is likely to moderate the relation of process performance to customer
satisfaction. As such, we hypothesize that:
Hypothesis 2. The higher product performance, the lower the influence of process
performance on customer satisfaction.
3.3
Impact of Process Transparency on Process and Product Performance
The development process’s transparency is of high importance for project management. Based on a
previous study (Joosten et al., 2014), we hypothesize that process transparency has a positive influence
on both process performance and product performance. The beneficial influence of transparency on IS
project success in general (Stavrou et al., 2014) is shown by the causal mapping of success factors to
success criteria in Pankratz and Loebbecke’s (2011) study. In case of process performance, transparency
reduces the effort needed to gain required information and, thus, also reduces the waste of resources
(Joosten et al., 2014). In case of product performance, process transparency increases the likelihood that
project stakeholders have all information important to them (Pankratz & Loebbecke, 2011). Following
Pankratz & Loebbecke (2011), this leads to more effective customer involvement, which, in turn, is likely
to result in a product that meets customer needs and expectations. As such, we hypothesize that:
Hypothesis 3a. The higher process transparency, the higher the process performance.
Hypothesis 3b. The higher process transparency, the higher the product performance.
4
4.1
Research Design
Data Collection
We gathered data via a questionnaire survey with IS experts in Germany. We used a call for participation
by the GPM (Deutsche Gesellschaft für Projektmanagement e.V.), the German chapter of the International
Project Management Association (IPMA), and personal contacts to gain participants. Overall, 52 IS project
managers on behalf of the contractor participated in our survey to report on their experience in IS projects.
Since we contacted individuals and organizations, we do not have an exact number of individual potential
respondents who received our call. Thus, our sampling approach does not provide insights into the
response rate and a potential non-response bias. However, we did not find a significant difference
between early and late respondents. Accordingly, we assume the potential related bias to be minor.
All participants were knowledgeable in the IS field with many years of professional experience (17 mean;
16 median). They gathered their experience on average in 20 IS projects in general (31 median) and in 17
(8 median) in their current position. Almost 80 percent had a university degree. In our sample, internally
(56%) and externally (44%) contracted projects are almost equally distributed. There are also about as
many fixed-price (54%) as time-and-material (46%) projects. The majority of projects (92%) were
conducted to develop new or extend existing IS. Table 1 overviews the projects’ business sectors. Table 2
provides indices of project cost, duration, and number of team members.
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Table 1. Projects’ Distribution over Industries
Industry
Share
Financial services
46%
Telecommunication
15%
Transport
12%
Other
5%
Retail
4%
Chemistry
4%
Manufacture
4%
Supply
2%
Research and development
2%
Public services
2%
Defense
2%
Media / Print
2%
Table 2. Projects’ Cost, Duration, and Number of Team Members
Median
Mean
500,000
3,009,282
Project duration in months
12
17
Number of team members
10
19
Project cost in €
4.2
Measurement Scales
Table 3 overviews the applied constructs and the according items and their references. For process
performance and product performance, we used measures that are typically used in IS research (Keil et
al., 2013; Wallace et al., 2004). Concerning product performance, we selected the items to account for
both functional and non-functional requirements (see our differentiation in Section 2). In contrast to
Wallace et al. (2004), we omitted the item concerning reliability since this aspect is included in the item
concerning overall system quality (PROD2). Moreover, we do not refer only to response time, but also to
performance in general (PROD3).
Table 3. Constructs and Corresponding Items
Construct
Item no.
Process
performance
Product
performance
Customer
satisfaction
Item: to which extent do you agree/disagree with the
following statements concerning the considered project?
References
Adopted from
Wallace et al.
(2004)
PROC1
The system was developed within budget.
PROC2
The system was developed within schedule.
PROD1
The users perceive that the system meets intended functional
requirements.
PROD2
The overall quality of the developed application is high.
PROD3
The system meets user expectations with respect to
performance.
PROD4
The system is easy to maintain.
CS1
Based on the experience with the project and the product, the
customer is satisfied.
CS2
In general, the customer is satisfied.
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Adopted from
Wallace et al.
(2004)
Adapted from
Caruana (2002)
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Customer Satisfaction in IS Projects: Assessing the Role of Process and Product Performance
Table 3. Constructs and Corresponding Items
Construct
Item no.
Process
transparency
Item: to which extent do you agree/disagree with the
following statements concerning the considered project?
References
CS3
Based on overall experience, the customer is dissatisfied.
(reversed)
PT1
I had access to all necessary information at all times.
PT2
I was informed about the project status at all times.
PT3
My information needs were often unmet. (reversed)
Adapted from Mao
et al. (2008)
We adapted the items concerning customer satisfaction from Caruana (2002). Because we did not have
access to the customers of the analyzed projects, we measured customer satisfaction as perceived by the
project managers (cf. Ooi, Lin, Tan, and Chong (2011) for a similar approach). Since we did not identify
existing items concerning the construct process transparency, we adapted those for the related construct
of information sharing (Mao et al., 2008) based on our understanding of process transparency derived
from literature (Joosten et al., 2014; Pankratz & Loebbecke, 2011; Stavrou et al., 2014). Although these
items are applicable to any stakeholder in IS projects (the definition applied in this study refers to team
members in general; see Section II), we collect data from the perspective of project managers since they
are in charge of completing a project in terms of adherence to planning, which is what we assess in terms
of process performance and product performance.
Four IS experts successively pretested our questionnaire and approved it or suggested marginal changes
in wording. Additionally, three researchers (authors’ colleagues working as graduates in the IS discipline)
checked our items to ensure face validity (Gravetter & Forzano, 2012). We selected our respondents with
regard to their experience in managing IS projects (we preferred most experienced). All items are
reflective and were measured on a 7-point Likert scale (1—total disagreement; 7—total agreement).
5
Data Analysis and Results
In contrast to covariance-based modeling approaches, partial least squares (PLS) path modeling inhibits
minimal limitations on sample size and residual distribution (Chin, Marcolin, & Newsted, 2003). Due to our
sample size and the fact that we followed an explorative approach (Hair, Ringle, & Sarstedt, 2011), we
applied PLS path modeling by using SmartPLS 2.0 (Ringle, Wende, & Will, 2005) for data analysis. As
such, we validated our scales’ psychometric properties to measure the constructs and falsify the
hypothesized relations as stated above.
5.1
Measurement Model
We first conducted an exploratory factor analysis using R, a free software environment for statistical
computing and graphics. Using the threshold of eigenvalues greater than 1, we extracted four components
that explain a total of 76 percent of the variance (see the convergent validity criteria below concerning the
unidimensionality of our constructs). In this section, we elaborate on the four reliability and validity criteria
that are relevant for measurement models containing only reflective indicators: internal consistency,
indicator reliability, convergent validity, and discriminant validity.
First, one can assess two criteria to evaluate internal consistency. All constructs need to exhibit a
Cronbach’s alpha and composite reliability greater than 0.700 (Nunnally, 1978; Werts, Linn, & Jöreskog,
1974). As the lowest Cronbach’s alpha amount was 0.706 and the lowest composite reliability amount was
0.832 (see Table 4), the data passed both criteria.
Second, indicators are considered reliable if the associated latent construct explains more than half of the
indicator’s variance (Henseler, Ringle, & Sinkivocs, 2009). Considering standardized factor loadings, one
can evaluate this criterion in terms of the squared factor loadings. Considering the lowest loading (i.e.,
0.753), the data passed the criterion of indicator reliability because the according squared loading was
0.567.
Third, one can apply three criteria to assess convergent validity (Fornell & Larcker, 1981): all item factor
loadings should exceed 0.700, composite construct reliabilities should exceed 0.800, and average
variance extracted (AVE) should exceed 0.500 for each construct. One of the items for product
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performance (PROD4) showed a low factor loading (0.364). Accordingly, we removed this item and reestimated the model parameters. As Table 5 shows, standardized item loadings exceeded the threshold
of 0.700. Additionally, Table 4 demonstrates the composite reliabilities of all constructs exceeded the
required minimum of 0.800. Table 4 also shows that AVE values of all constructs exceeded the threshold
of 0.500. Thus, convergent validity conditions are met.
Fourth, to confirm discriminant validity, a latent variable needs to explain its indicators’ variances to a
higher degree than the variances of other latent variables (Fornell & Larcker, 1981). Accordingly, the
square root of each construct’s AVE needs to exceed the construct’s correlation with all other constructs.
As Table 4 shows, the highest correlation between any pair of constructs was 0.739 (between process
performance and customer satisfaction), whereas the lowest square root of AVE was 0.789 (product
performance). We also assessed discriminant validity by examining the factor loadings of each indicator.
According to Chin (1998), each indicator needs to load higher on the associated construct compared to all
other factors. In our case, factor loadings and cross-loadings (see Table 5) corroborated discriminant
validity.
Table 4. Scale Properties and Descriptive Statistics
Inter-construct correlations
(1)
(2)
(3)
(4)
Construct
Mean
Standard
deviation
Cronbach’s
alpha
Composite
reliability
AVE
(1) Process
transparency
5.813
1.659
0.913
0.945
0.851
0.922
(2) Process
performance
4.598
2.167
0.801
0.909
0.834
0.348
0.913
(3) Product
performance
5.902
0.925
0.706
0.832
0.623
0.530
0.575
0.789
(4) Customer
5.576
1.490
0.927
0.954
0.873 0.401
0.739
0.729
satisfaction
Note: Diagonal elements in bold represent the square root of AVE for the respective construct
0.934
Table 5. Factor Loadings and Cross-loadings
Scale items
PROC1
PROC2
PROD1
PROD2
PROD3
CS1
CS2
CS3
PT1
PT2
PT3
5.2
Process
performance
Product
performance
Customer
satisfaction
Process
transparency
0.902
0.924
0.523
0.350
0.452
0.720
0.687
0.665
0.302
0.295
0.359
0.530
0.520
0.778
0.753
0.835
0.658
0.711
0.672
0.465
0.356
0.602
0.669
0.680
0.623
0.528
0.549
0.931
0.963
0.909
0.381
0.273
0.429
0.216
0.408
0.604
0.276
0.292
0.344
0.345
0.435
0.929
0.875
0.960
Common Method Bias
Because we used a self-report approach to assess the indicators of independent and dependent
variables, our study may suffer from common method variance (CMV). Although method biases seem to
be less serious in IS research compared to other disciplines (Malhotra, Kim, & Patil, 2006), we designed
our study in a way that reduces their likelihood. Following Podsakoff, MacKenzie, Lee, and Podsakoff
(2003), we reduced the biases of social desirability or respondent acquiescence by requesting them to
answer each question as honestly as possible, by not providing incentives for participation, by
guaranteeing anonymity, and by assuring that no right or wrong answers existed. Moreover, we included
reversed formulated items to reduce the likelihood of common method variance. Additionally, we tested for
common method variance downstream. Following Malhotra et al. (2006), we conducted Harmon’s singlefactor test and applied a marker-variable technique in a post hoc fashion (Lindell & Brandt, 2000). To
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Customer Satisfaction in IS Projects: Assessing the Role of Process and Product Performance
apply Harman’s single-factor test, we conducted an exploratory factor analysis of all items (Podsakoff et
al., 2003). Because none of the resulting four factors accounted for a majority of the variance, we assume
no substantial CMV to exist. We applied the marker-variable technique to check for the correlation
between theoretically uncorrelated dimensions (Malhotra et al., 2006). According to Lindell and Whitney
(2001), one can use the second-smallest positive correlation between manifest variables as an indicator to
assess CMV because it provides an adequate proxy. Considering that the second-smallest correlation
between manifest variables in our sample amounts 0.04, we argue that CMV was not prevalent (Malhotra
et al., 2006) in our study.
5.3
Hypotheses Testing
Testing structural models with PLS requires a sample size of at least ten cases per predictor (Chin, 1998).
The sample size is then at least ten times larger than either the highest number of indicators per scale or
the highest number of paths directed at any construct in the structural model. Although our sample of 52
cases is rather low, it is sufficient to adequately calculate the model since the highest number of indicators
per construct is four and the highest number of paths to any construct is two. Moreover, our study is in line
with other recent studies relying on rather low sample sizes (e.g., Keil et al., 2013). Structural models are
typically evaluated in terms of path coefficients and explained variances (R2). Whereas path coefficients
represent the strength of relationships between independent and dependent variables, R2 values indicate
the predictive power of the model. We used SmartPLS (Ringle et al., 2005) to calculate path coefficients
applied SmartPLS’s bootstrapping (5000 samples) to retrieve the according t-values. Figure 2 shows the
overall result (path coefficients are shown as standardized β). As we can see, our model is in line with
Falk and Miller’s (1992) recommendation that, concerning nomological validity, endogenous latent
constructs should provide an R2 of at least 0.10 in order to be adequately judged.
R2 = 0.121
Process
Performance
R2 = 0.712
Process
Transparency
Customer
Satisfaction
R2 = 0.281
Product
Performance
Figure 2. Estimated Model of Customer Satisfaction (n = 52)
According to Chin (1998), the R2 of our target construct customer satisfaction (71.2%) is substantial. The
R2 values of process performance (12.1%) and product performance (28.1%) are rather low. However,
process transparency is only one of the many success factors associated with process and product
performance in IS projects (Byers & Blume, 1994; Kendra & Taplin, 2004; Nelson, 2007; Reel, 1999) and
explaining these constructs is not our primary purpose. Using blindfolding, we calculated the predictive
relevance Q2. This value indicates how far the underlying empirical data can be rebuilt using the model
and PLS parameters (Fornell & Cha, 1994). We obtained a value of 0.555 (omission distance = 7; crossvalidated redundancy), which represents the predictive nature (Chin, 2010).
As Figure 2 shows, the estimated model corroborates all our hypotheses. Hypothesis 1a tested a positive
relationship between process performance and customer satisfaction, which was supported (standardized
β = 0.660, t = 3.730, p = 0.000, Cohen’s (1988) f 2 = 0.918). Hypothesis 1b tested a positive relationship
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between product performance and customer satisfaction, which was supported (standardized β = 0.793, t
= 5.104, p = 0.000, f 2 = 0.993). Hypothesis 2 tested a negative moderation (i.e., the relationship between
product performance and the relationship between process performance and customer satisfaction),
which was supported (standardized β = -0.229, t = 2.646, p = 0.008). Following the guidelines for
moderating effects provided by Carte and Russell (2003), we also calculated f 2 (0.133) and the according
∆R2 (3.8%). Hypothesis 3a tested a positive relationship between process transparency and process
performance, which was supported (standardized β = 0.697, t = 2.555, p = 0.011, f 2 = 0.138). Hypothesis
3b tested a positive relationship between process transparency and product performance, which was
supported (standardized β = 0.401, t = 4.836, p = 0.000, f 2 = 0.391).
6
Discussion
We developed and empirically tested an IS project success model that suggests customer satisfaction to
be the uppermost criterion that is associated with process performance (i.e., budget and schedule) and
product performance (i.e., functional and non-functional requirements). Furthermore, the model suggests
product performance to moderate the relation between process performance and customer satisfaction
and hypothesizes process transparency to be related to both components (i.e., process performance and
product performance). As Figure 2 shows, our data from a questionnaire survey with IS experts in
Germany widely corroborate the hypothesized model. Thus, we advance the understanding of measuring
IS project success and contribute to a better understanding of IS development and explicitly link a success
factor to success criteria (Siau et al., 2010). In this section, we discuss implications of the findings and our
study’s limitations.
The analysis concerning data on IS project success revealed that we can explain customer satisfaction in
terms of process performance and product performance to the degree of 71.2 percent. Other aspects
related to customer satisfaction might, for instance, be whether the developed project contributes to
strategic goals of the customer organization (Cleland, 1986) or the efficiency of the development process
(Basten et al., 2012). The latter is not to be equated with adherence to planning (which, in our model, is
represented by process and product performance; see Section 2). As Section 2 explains, project plans are
often incorrect. Therefore, a project performed as efficiently as possible can still not meet its plans if these
were unrealistic in the first place. Empirical findings confirm the necessity to differentiate between
adherence to planning and process efficiency (Basten et al., 2012).
Our model shows that, even when considering customer satisfaction as the uppermost criterion of IS
project success (Anderson et al., 1994; Anderson and Sullivan, 1993; Nelson, 2005), adherence to
planning—the sole constant in IS project success evolution (Ika, 2009; Judgev & Müller, 2005)—is still a
central component in assessing IS project success. Our findings support the call for an extended set of
success criteria (Ika, 2009; Judgev & Müller, 2005) since adherence to planning in terms of process
performance and product performance does not fully explain our target construct customer satisfaction
(see Figure 2). Since adherence-to-planning criteria are typically perceived as easy to measure (Pinto &
Slevin, 1988b) and further ones are required, our findings also corroborate Barclay’s (2008) assessment
that measuring project success is a difficult endeavor. While a difference exists between the traditional
adherence-to-planning criteria (Atkinson, 1999; Lech, 2013; Pinto, 2004) and the contemporary criterion of
customer satisfaction (Baker et al., 2008; Ika, 2009), the traditional criteria explain the majority of the
variance in customer satisfaction (see Figure 2).
In line with previous research, two aspects in our analysis indicate product performance to be more
important than process performance with regard to customer satisfaction. First, the relation between
product performance and customer satisfaction was stronger than the one between process performance
and customer satisfaction (standardized β = 0.793 vs. 0.660). Second, product performance significantly
moderated the relation between process performance and customer satisfaction (standardized β = -0.229,
t = 2.646). The negative path coefficient reveals that a high product performance reduces the positive
influence of high process performance on customer satisfaction. We can explain the higher importance of
product performance compared to process performance by the problematic nature of time and budget as
success criteria, which results from projects being conceptualized based on effort estimates (Jurison,
1999). Since comparisons between planned and actual time and budget indices are only valid and reliable
if underlying estimates are correct, which they rarely are (Moløkken-Østvold et al., 2004), one can
consider not meeting time and budget objectives to be only marginally important. Instead, customers
seem to place emphasis on product performance. Moreover, whereas time and budget are rather shortterm criteria, the developed product typically represents a long-term perspective (see Section 1), which is
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Customer Satisfaction in IS Projects: Assessing the Role of Process and Product Performance
in line with researchers’ view that projects primarily initiated to realize business benefits should be
evaluated in terms of according criteria (Shenhar et al., 2001).
According to our model, process transparency is positively associated with both process performance and
product performance (see the path coefficients and levels of significance in Figure 2). Thus, we also
corroborate researchers and practitioners who claim the relevance of process transparency for IS project
success (Böhm & Haselberger, 2012; Cohn, 2009; Joosten et al., 2014; Pankratz & Loebbecke, 2011;
Stavrou et al., 2014). Regarding process performance, process transparency reduces the time needed to
gather information and, thus, contributes to meeting time and budget objectives. If required information is
available throughout the development process, more time can be spent on developing the product, which
leads to increased product performance. Because process transparency concerns the availability of
information to team members including the project manager throughout the development process, the
relation between process transparency and process performance is stronger compared to the relationship
between process transparency and product performance. Furthermore, as we mention in Section 1,
transparency is not unrelated to other success factors such as communication and stakeholder
involvement (Stavrou et al., 2014), which prior research has extensively emphasized (Hyväri, 2006;
Petter, 2008). However, while likely to be affected by these factors, process transparency has a different
focus. For instance, stakeholders can be involved to a large extent to make suggestions regarding the
developed product but still feel that they are insufficiently informed about the project progress. Along those
lines, there can be regular and detailed communication, which, however, might only serve information
needs of specific stakeholders but neglect others who need a different kind of information and feel
uninformed as a result. Thus, transparency refers to the stakeholders’ state of mind; that is, their feeling
that they have all information relevant to them, which can, in turn, be achieved by several means such as
communication and involvement (Stavrou et al., 2014). By illuminating the role of process transparency as
a success factor, we make a first step to open the black box of IS project success (Siau et al., 2010) by
explicitly analyzing the relation of success factors to success criteria.
As with every empirical study, ours has limitations. First, we measured the constructs in our model from
the perspective of only project managers. While process performance and product performance are likely
to be adequately assessed by project managers, biases are possible concerning process transparency
and customer satisfaction. Concerning the former, other project stakeholders might have different
perceptions concerning the availability of necessary information. While future research might address
transparency on different stakeholder levels, we believe the perspective of project managers to be
sufficient in our case since they are in charge of managing budget, schedule, and requirements and since
we explicitly analyze the relation between transparency and those criteria. Concerning the latter, customer
satisfaction might be best assessed by asking the customer directly. For the match of project managers
and customers required in this approach, we depend on project managers providing contact details of
customers of the respective projects. However, our experience shows that project managers are unlikely
to pass contact details of customers who are dissatisfied with the course or the outcome of the project. As
such, this approach would lead to a bias towards successful projects. Consequently, we chose to rely on
assessments on behalf of project managers since they have insights into the satisfaction of the customers
as well. The bias towards successful projects is in this case less likely to occur to the same extent.
Second, we refer to IS projects in general. However, such an approach contradicts research streams in
favor of contingency theory (Donaldson, 1996; Tidd, 2001), which states that no single way of managing
and organizing fits best in all situations. Accordingly, future research should assess whether our model is
applicable across different project types. Finally, our sample comprises 52 projects only. However, this
sample size conforms to the requirements for PLS estimation of the model. Despite the limited sample
size, we are confident that we provide a substantial model of IS project success.
7
Theoretical Contributions, Management Implications, and Future
Research Avenues
With this study, we contribute to the literature in three ways. First, we show that, to gain customer
satisfaction, attention should be paid to both process performance and product performance. Second,
while demonstrating that product performance is more strongly associated with customer satisfaction
compared to process performance, we also advance the understanding of IS project success by
demonstrating the moderating effect of product performance on the influence of process performance.
Finally, our results indicate the importance of process transparency in IS development projects and so
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contribute to a better understanding concerning the linkage between project success factors and project
success criteria.
IS project managers should more significantly emphasize developing a high-quality product that meets
users’ needs instead of emphasizing adherence to budget and schedule. Also, process transparency
requires significant effort as a result, for instance, of the active communication of project plans and
progress. Future research should accordingly cope with the identification of means to increase process
transparency and address the question of which information is predominantly required by different project
team members. While most projects in our sample were conducted in financial services, the influence of
process performance and product performance on customer satisfaction in other domains should be
addressed in other studies. Financial services highly depend on qualitative systems, which may potentially
increase the importance of product performance. As product performance is a matter of functional and
non-functional requirements in this context (see Section 2), future research on this topic should explicitly
differentiate between these concepts. While both process and product performance are important
components of IS project success, our results indicate that product performance has a more decisive
influence when it comes to achieving customer satisfaction.
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Customer Satisfaction in IS Projects: Assessing the Role of Process and Product Performance
About the Authors
Dirk Basten is an Assistant Professor at the Department of Information Systems and Systems
Development at the University of Cologne, Germany. His research focuses on IS project success,
software development effort estimation, knowledge management in project and program contexts, and
organizational agility. His research has been published in journals such as Communications of the
Association for Information Systems, IEEE Computer, Journal of Computer Information Systems,
International Journal of Information Technology Project Management, and the proceedings of conferences
such as HICSS, ECIS, AMCIS, and ICIS.
Oleg Pankratz is a postdoc researcher at the Department of Information Systems and Systems
Development at the University of Cologne, Germany. His research focuses on IS project success and has
been published in International Journal of Information Systems and Project Management and the
proceedings of conferences such as HICSS, ECIS, AMCIS, and ICIS.
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