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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 is unique in giving you a 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!


3-day workshop Programming Experiments in Python: 16-18 April 2018

Learn to program in Python (with a particular focus on the PsychoPy libraries) at this 3-day Python workshop in Nottingham, taught be the creators of PsychoPy.

PsychoPy is going Professional and Online!

We’re delighted to announce that The Wellcome Trust has granted us a sum of money that will allow us to hire a full-time developer, meaning that we will become more professional than ever and, critically, also funding for Ilixa Ltd. to complete the job of building the online experiment system that many of you have been waiting for! See the discourse post for further details of what we’re planning.

Latest version: 1.85.4 was released Sept 2017. The release series 1.85 provides the initial proof-of-concept of online experiments. Beware - these are bound to be buggy so only use if you know what you’re doing. And READ THE DOCS. See the full Changelog. The provision of online experiments will be developed properly for release in mid-2018.