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!

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

Interaction is now free!

Good news... Interaction is now available for free! Please click here to get your free copy!

Important: 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.

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!

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 100 free online statistics calculators are now available!