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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.

Note: Pricing for this product is only available by quotation.


Intuitive Design

• Design complete experiments without programming
• Drag and drop objects to build experiments
• Design with text, images, movies, sounds, sliders, multiple choice, buttons
• Present performance feedback without script
• Use pre-built experiments and templates
• Choose between a variety of sampling methods


• Present experiments on multiple monitors
• Record participant vocalizations
• Find and replace property values
• Choose preferred amount of data logging
• Create more advanced designs with scripting
• Share common experiment operations using package files


• Test at faster speeds with auto response
• Run in a floating window with real-time debugging
• Review Advisor Report to identify experiment design issues
• Start an experiment from any List for quicker debugging


• Millisecond accurate stimulus presentation and response times
• Use event or cumulative timing mode
• Avoid response latencies from input devices by using Chronos®
• Extensive timing data reports available online

External Device Integration

• Connect to Chronos for intuitive digital or analog communication
• Send triggers and markers without script using Task Events
• Send and receive triggers and markers via socket, serial, or parallel port
• Create drag and drop package calls with PackageFile Editor
• Communicate with joysticks using X/Y coordinates and buttons

Data Analysis

• Data available in E-DataAid format as well as .TXT
• Save preferred data layout for each experiment
• Merge participant and session data files into one file
• Be aware of data that has been edited
• Perform descriptive analyses and auto-generate Excel plots and tables
• Export data for inferential statistics in SPSS, R, and Excel

New with E-Prime 3.0

  • Improved interface with tabbed workspace
  • Support for tablets and touchscreens
  • SlideButtons for an area of response collection without using script
  • Slide Layout Templates for quick design
  • Experiment Library with pre-built experiments to download
  • New Task Event for executing user script
  • New Samples and Templates
  • SlideChoice sub-object to design multiple choice surveys, recognitions, and recalls
  • SlideSlider sub-object to design scales and sliders
  • Find and replace properties in an experiment
  • Run an experiment in a floating window for quicker inspection and debugging
  • Quickly start an experiment from any List
  • Interactively run List rows for debugging purposes

Psychology Software Tools, Inc has been part of the research community – creating products for research and publishing our own studies – since 1987. We’re constantly brainstorming ways to improve our products and communicating with our users to learn what they need to make the next scientific breakthrough.

Our team of researchers, developers, engineers, solutions consultants, and support technicians work across teams to accomplish one goal: facilitating the advancement of science by helping the research community. PST has teamed up with the leading companies across the behavioral research field to bring you seamless integrations needed for your research. To accommodate our customers worldwide, we offer a network of dedicated resellers who can get our products in your hands with ease and affordability.

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