September 2009: Version 1.50 released, including a preview of new GUI interface.Note that, although this phase of development gave the application the name PsychoPy2, version 2.0 itself was never released. PsychoPy2 : addition of the graphical Builder interface.April 2009: Version 1.0 released, including all main features of the library.2006: An editor was added, so that users could use PsychoPy as an 'application' rather than a library.Installing was complex because of the dependencies. At this time PsychoPy was a library (Python package) that could be imported by Python scripts. 2003-2005: this was extended to be able to generate experiments in the author's lab at Nottingham University and made available as an open source project on the internet. The project was initially registered on under the name "psychpy" on 14 March 2002. 2002: PsychoPy was originally written by Peirce as a proof of concept - that a high-level scripting language could generate experimental stimuli in real time (existing solutions, such as Psychtoolbox, had to pre-generate movies or use CLUT animation techniques).Here are some major releases in the history of PsychoPy: PsychoPy is continually updated with 5-10 releases each year, containing new features and bug fixes. Īccording to its usage statistics page, Psychopy was launched on more than 20,000 different computers in November, 2018, and has gained relative usage by month every year since its initial release in 2003. A 2018 grant from the Wellcome Trust allowed for hiring of a full-time staff. The project was initially supported only by volunteer code and forum contributions alongside grants from The Royal Society, The University of Nottingham, Wellcome Trust, and BBSRC project. It is also capable of generating and delivering auditory stimuli. Its platform independence is achieved through use of the wxPython widget library for the application and OpenGL for graphics calls. Unlike most packages, it provides users with a choice of interface - they can generate experiments by writing Python scripts, use a graphical interface that will generate a script for them, or combine both methods. Developed initially as a Python library and then as an application with a graphical interface, it now also supports JavaScript outputs to run studies online and on mobile devices. PsychoPy is an open source software package written in the Python programming language primarily for use in neuroscience and experimental psychology research.
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