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.
E-Prime licenses are perpetual. Which license is right for you?
|Single User License||Network License|
|Number of installations||25||25 per seat|
|Design machines||1 at a time||Multiple machines simultaneously|
|USB key required for design||Yes||No|
|USB key required for data collection||No||No|
|Free additional Single User License||No||1 per 5 seats*|
|Quantity discounts||No||Discount increases with number of seats|
|License Type||Price in USD*|
|Single User Upgrade**||$795 (20% off)|
|Network||$796 per seat - minimum of 10 seats
$697 per seat - minimum of 15 seats
$597 per seat - minimum of 20 seats
$498 per seat - minimum of 40 seats
**Requires validation of E-Prime 2.0 license
|Operating System||E-Prime 3.0 is compatible with PCs running Microsoft© Windows® 7 SP1, 8, 10|
|Processor||Pentium i3 2GHz or higher||Pentium i7 2GHz or higher|
|RAM||2GB||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 as well as weekly live streams. If you can’t find what you’re looking for, let us know and we’ll include it in a future live stream!
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.
Brain Lab Works
If you are interested in contracting the design of your E-Prime experiment, PST has teamed up with Brain Lab Works to provide worldwide enterprise-grade experiment design in cognitive neuropsychology and related domains. Brain Lab Works is experienced in integrating external peripherals, including eye-trackers, peripheral physiology, EEG, emotion recognition systems, stimulations (electrical shockers, tDCS, etc,.), fMRI and fNIRS with E-Prime.
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