Metin Doğangün
Baskent University, Faculty of Education, Graduate Student
Abstract 1. In this chapter, I describe more formally the importance of reliability to science and show how scientists determine the reliability of their observations. I begin by describing more specifically the basic task that scientists... more
Abstract 1. In this chapter, I describe more formally the importance of reliability to science and show how scientists determine the reliability of their observations. I begin by describing more specifically the basic task that scientists try to accomplish in their work and show ...
... a more comprehensive and coherent framework than classical psychometric theory for the study of educational and psychological measurement. ... Curriculum evaluation, in particular, implies differentiation of educational objectives, of... more
... a more comprehensive and coherent framework than classical psychometric theory for the study of educational and psychological measurement. ... Curriculum evaluation, in particular, implies differentiation of educational objectives, of learning situations, of stages of progress ...
Research Interests:
Research Interests:
... With the real datasets, the two methods provided very similar estimates of variance components ... permits, for ex-ample, different conclusions to be reached concerning the teaching of mathematics ... An alternative strategy is to... more
... With the real datasets, the two methods provided very similar estimates of variance components ... permits, for ex-ample, different conclusions to be reached concerning the teaching of mathematics ... An alternative strategy is to conduct a preliminary analysis, treating the fixed facet ...
Research Interests:
Research Interests:
\ neralizabili a A PRIMER Richard J. Shavelson Noreen M. Webb ... Generalizabili,v Theory Thi8 On© PHZ7-DCJ-2Z2P ... MEASUREMENT METHODS FOR THE SOC1AL SC1ENCES SER1ES Measurement Methods for the Social Sciences is a series designed to... more
\ neralizabili a A PRIMER Richard J. Shavelson Noreen M. Webb ... Generalizabili,v Theory Thi8 On© PHZ7-DCJ-2Z2P ... MEASUREMENT METHODS FOR THE SOC1AL SC1ENCES SER1ES Measurement Methods for the Social Sciences is a series designed to provide ...
Research Interests:
Research Interests:
Research Interests:
This study assessed the score reliability of the Drinking Motives Questionnaire-Revised (DMQ-R) via generalizability theory. Participants (n = 367 college students) completed the DMQ-R at three time points. Across subscale scores,... more
This study assessed the score reliability of the Drinking Motives Questionnaire-Revised (DMQ-R) via generalizability theory. Participants (n = 367 college students) completed the DMQ-R at three time points. Across subscale scores, persons, persons × occasions, and persons × items interactions accounted for meaningful variance. Findings illustrate advantages of generalizability theory-based techniques.
Research Interests:
The identification and reduction of measurement errors is a major challenge in psychological testing. Most investigators rely solely on classical test theory for assessing reliability, whereas most experts have long recommended using... more
The identification and reduction of measurement errors is a major challenge in psychological testing. Most investigators rely solely on classical test theory for assessing reliability, whereas most experts have long recommended using generalizability theory instead. One reason for the common neglect of generalizability theory is the absence of analytic facilities for this purpose in popular statistical software packages. This article provides a brief introduction to generalizability theory, describes easy to use SPSS, SAS, and MATLAB programs for conducting the recommended analyses, and provides an illustrative example, using data (N= 329) for the Rosenberg Self-Esteem Scale. Program output includes variance components, relative and absolute errors and generalizability coefficients, coefficients for D studies, and graphs of D study results.