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About PsychoPy

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PsychoPy is an open-source application allowing you run a wide range of neuroscience, psychology and psychophysics experiments. It’s a free, powerful alternative to Presentation™ or e-Prime™, written in Python (a free alternative to Matlab™ ).

PsychoPy provides a unique choice of interface: use the Builder interface to build rich, flexible experiments easily or use the Coder interface to write extremely powerful experiments in the widely-used Python programming language. The best of both worlds!

News

Latest version: 3.0.0 beta (multiple versions) released July 2018

See the launch video at https://www.youtube.com/watch?v=bprYeBzkUc8 to get more info.

Supporting online studies and announcing our own experiment server at Pavlovia.org

Buy the official book!

You can now buy the book, Building Experiments in PsychoPy from Sage Publishing!

300 pages of great advice on how to create better experiments with a combination of Builder and some code snippets! Suitable for a wide range of audiences, with separate sections for:

  • beginners (suitable for undergraduate teaching)
  • professionals (more technical detail for the afficionado)
  • and specialists (with particular use cases like EEG, fMRI, psychophysics).

See the full Changelog