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 including...

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 40 free online statistics calculators are now available!