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PsychoPy, published by Open Science Tools Ltd, is an open-source application designed for creating and running a wide range of psychology and neuroscience experiments. Currently available at version 2026.2.3, with a total of three versions listed in the catalog, the software serves researchers, educators, and students who need a flexible and accessible platform for experimental design. Its purpose is to simplify the process of building scientifically rigorous experiments without requiring extensive programming expertise, while still offering advanced options for users who prefer full control over their experimental code. PsychoPy addresses this dual need through two complementary interfaces: the Builder interface, which enables visual coding by allowing users to assemble experiments from graphical components, and the Coder interface, which supports script-based experiment development for those comfortable writing code directly. This combination makes the application suitable for both beginners constructing their first behavioral tasks and experienced researchers developing complex, customized paradigms. Typical use cases include designing reaction time studies, psychophysical measurements, cognitive tasks, surveys, and other experimental protocols commonly used in psychology and neuroscience laboratories. Because it is open-source, PsychoPy also benefits from transparency and community-driven development, making it a practical choice for academic institutions and research groups operating under budget constraints or open-science principles. Within a software catalog, PsychoPy falls under the category of scientific and research software, specifically tools for behavioral experiment design and presentation in the psychological and neuroscientific domains. Users selecting between the three available versions can choose the release that best matches their operating environment and project requirements, with version 2026.2.3 representing the most current release. Overall, PsychoPy provides a well-established, versatile solution for anyone seeking to create, configure, and run reproducible experiments in psychology and neuroscience research settings.
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