News

- Latest version PsychoPy 2021.2 with mic recordings (local and online) and Builder eyetracking components! DOWNLOAD now
- 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

Easy
enough for teaching Precise
enough for psychophysics Flexible
enough for everything else Online
or lab-based, your choice Open Science
because it's what we do

PsychoPy is a free cross-platform package allowing you to run a wide range of experiments in the behavioral sciences (neuroscience, psychology, psychophysics, linguistics...)

This is a community project. Users have all the source code. Users are the developers. Users support each other.

Alongside open-source, we're strong supporters of Open Science, and we'll try to encourage and facilitate that wherever we can!

## 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 PsychoPy3) 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

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PsychoPy is great for:

- 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 users can access it anywhere?

PsychoPy3 added the facility to run studies online using a high-performance, hardware-accelerated, port of the PsychoPy Python library.

- Export your experiment from Builder to a web page
- PsychoPy is the only package with reaction time precision under 4 ms online!
- Update your stimulus on every frame, just like in the desktop!
- 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.

bruce mars

## Open science

Did you notice that everyone's sharing these days?

Richard Balog

- PsychoPy was written by scientists for scientists
- You have all the source code. If you want something added or changed you can go ahead and make that change!
- Over 100 contributors have made changes (small or large) and fed them back to the project for others to benefit!
- You can share your study on Pavlovia.org and that means more people might be tempted to base their work on yours (which means more people talking about your work).