Design. Collect. Analyze.
With more than 100,000 users in research institutions and laboratories in over 60 countries, E-Prime is the world-leading behavioral experiment software. E-Prime provides a truly easy-to-use environment for computerized experiment design, data collection, and analysis. E-Prime provides millisecond precision timing to ensure the accuracy of your data. E-Prime’s flexibility to create simple to complex experiments is ideal for both novice and advanced users.
Not sure which license type is right for you? Use the E-Prime Licensing Wizard!
*Minimum of 5 users required for all group licenses.
If your support plan has expired, you can purchase a new plan in our online store.
|Operating System||E-Prime 3.0 is compatible with PCs running Microsoft© Windows® 7 SP1, 8, 10**|
|Processor||Intel Core i3 3GHz or higher||Intel Core i7 3GHz or higher|
|RAM||4GB||4GB or higher|
|Video Card||DirectX™ 7 or greater adapter (Windows 7)|
DirectX™ 11* or greater adapter (Windows 8 or 10)
|DirectX™ 7 or greater adapter (Windows 7)|
DirectX™ 11* or greater adapter (Windows 8 or 10) with 128MB RAM or higher
|Additional||Chronos® or a Core Audio sound card compatible for audio presentation|
* DirectX 11 Hardware Acceleration required for Windows 8 and Windows 10. See KB 19550 for details.
Our YouTube channel is updated frequently with new tutorials. If you can’t find what you’re looking for, let us know and we’ll include it in a future video!
Support Site Resources
The new E-Prime 3 Experiment Library includes completed experiments that can be downloaded to use and/or modify. Examples of how to perform specific actions in your experiment are available in our Samples area.
Browse or search hundreds of articles in our Knowledge Base and Online Documentation sections. Our Online Documentation includes Advanced Tutorials on using images, movies, sounds, and scripting in E-Prime.
If you would like to join the conversation in our user community, please check out our User Forum as well as the E-Prime Google Group. PST Technical Consultants do not moderate these groups. If you would like to work with a PST Technical Consultant, please submit a support request on our Product Service and Support Site.
STEP (System for Teaching Experimental Psychology) is a non-PST site organized by Brian MacWhinney in the Department of Psychology at Carnegie Mellon University. STEP provides E-Prime experiments and E-Prime script samples.
The E-Primer is an independent book written by Amazon.provides an introduction into a wide range of experiments that can be set up using E-Prime. The E-Primer is available on
The E-Primer – Second Edition
The E-Primer has been updated for E-Prime 3. E-Prime is the leading software suite by Psychology Software Tools for designing and running psychology lab experiments. The E-Primer acts as a guide to this tool, providing all the necessary knowledge to make E-Prime accessible to everyone. You can learn the tools of psychological science by following The E-Primer through a series of entertaining, step-by-step instructions that recreate classic experiments.
The E-Primer Second Edition is available on Amazon