- Want to contribute to PsychoPy/JS? Apply to attend our in person code sprint!
- Official PsychoPy workshops April 9th - 11th at the University of Nottingham, Register here.
- Latest version, PsychoPy 2023.2, with Camera Component, Gratings/Gabors online, and "The Shelf"! DOWNLOAD now
- NEW EDITION of the official book, with new chapter on running online: Building Experiments in PsychoPy Ed2
- Is your software timing as good as PsychoPy®? See detailed comparisons with other software in our timing mega-study
- Please try to cite the most up-to-date paper: Peirce, Gray, Simpson et al (2019)
- Lots of helpful tutorials on youtube! Click here to see
What users say
Davide Massida
via twitter
"PsychoPy is one of those things that improve the life of an experimental psychologist. Really. #python #neuroscience"
Harriet Allen
Professor, University of Nottingham
"What made me switch was the combination of Builder and Coder options. Students are not scared of the Builder, but I can still write code when needed (and even hide it in student experiments).""
Nate Vack
Research Programmer, UW-Madison
"It's wonderful to have a product that makes stimulus presentation easy (and is free!)...""
Fenja Ziegler
Senior Lecturer, University of Lincoln
"...easy to customise with a bit of scripting, a helpful user community, can be explained to a student in an hour or so..."
Micah Allen
Post-doc, UCL
"I love psychopy! I used it for one previous fMRI experiment and found the language extremely easy to use..."
How is PsychoPy Free?
The PsychoPy desktop application is free to download and run for in lab studies. PsychoPy® was written by scientists for scientists, the code underlying the software is open source on github, so even if you want to change the software you can!
As PsychoPy grew in popularity, it became clear that developing it "as a side project" in researchers spare time was not going to be sustainable. We now have a company, Open Science Tools, to sustain professional development. We have three main sources of revenue:
- Pavlovia.org licenses: A platform for hosting your study online if you want to collect data via a URL link.
- Consultancy: Yes, you can pay us to make your task for you!
- Workshops: We can run custom training workshops for your department/team.
So, if you enjoy PsychoPy and would like to support its maintenance, please consider supporting us through one of these revenue streams. We try to keep our rates low-cost and affordable, whilst generating enough revenue to have a team of staff professionally develop PsychoPy and support users.
Easy enough for teaching
Universities all over the world are using PsychoPy® for teaching students about experiments
- Flexible and intuitive Builder interface to create huge range of studies
- Textbook(s) suitable for both undergraduate and professional audiences
- Many further resources for learning and teaching, including Youtube tutorials, online tutorials and workshops.
- The Pavlovia repository of shared experiments accessible directly from the application (requires PsychoPy®) to search for and share your studies.
Precise enough for psychophysics
Hardware accelerated graphics, best-in class timing, and calibration tools built in
- Fantastic timing precision (see the timing mega-study for comparisons)!
- Time and update your stimulus on every screen refresh!
- Tools to help monitor calibration and wide range of units
- Hardware-accelerated graphics for stimuli that can be updated on the fly
- Access to button boxes when you need the utmost precision
- Automated logging for you to what happened and when
- OpenGL (and shaders) ready for use when you low-level access to graphics
Flexible enough for everything else
- Dynamic, interactive studies: Free yourself from simple static stimuli! You can update your stimulus interactively on every screen refresh!
- Neuroimaging: Send and receive triggers to your hardware at precise times
- Eye-tracking: Access to wide range of hardware (eye trackers, button boxes, trigger systems...)
Online
Want to run your study on the web, so participants can access it anywhere?
Did you know PsychoPy® has a JavaScript sister library? PsychoJS, this means you can create a version of your experiment to run in a browser, after that you can use Pavlovia.org to host it!
Pavlovia is:
- A secure server to host your experiment online.
- An Open Access library of experiment demos.
- A place to create feature rich surveys using Pavlovia Surveys
- Upload that to Pavlovia.org (with easy tools built into the PsychoPy app)
- Give participants your URL and run your study in the browser!
- You can recruit participants using Sona, Prolific, Mechanical Turk or similar systems.
