Interaction - Windows software for graphing and analyzing statistical interactions
Welcome to the homepage of Interaction

Interaction is the only Windows software program specifically designed to draw and analyze statistical interactions! I developed this program because I was frustrated with how much time and effort it took to draw interaction graphs and analyze interaction statistics. Now it takes less than a minute!

NEW: Interaction is now compatible with Windows 7!

Note: If you receive a message while installing Interaction which states that version 4 of the .NET framework is not installed, please follow these instructions from Microsoft to update your system.

 Interaction is currently being used at hundreds of top institutions around the world including...

Interaction is now free!

For a limited time, I am making a fully functional version of Interaction available for free to anyone who participates in my quick (5 minute) online research study. Please click here for more information!

With Interaction you can:

  • Easily create interaction graphs using dichotomous, categorical, or continuous variables.
  • Instantly perform a complete statistical analysis of your interaction data.
  • Use data from many different formats to draw your interaction graphs, including SPSS, Excel, and tab-delimited data.
  • Modify every part of your interaction graphs, including titles, scales, axes, lines, legends, fonts, and more!
  • Save your graphs as images that can be directly inserted into documents, emails, posters, and presentations.
  • As a special bonus, Interaction now allows you to save each of your graphs as a high-resolution, publication-ready image. Editors love these 300dpi images because they look great in print!

You can download and try Interaction for free! Registration is still only $5!

Sample Interaction Image

A sample Interaction graph is shown above. You can see more graph samples in the gallery. You can also see a sample of the comprehensive statistical output generated by Interaction by clicking here.

You may also be interested in my Free Statistics Calculators - over 50 free online statistics calculators are now available!