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Welcome to CogToolCogTool is a general purpose UI prototyping tool with a difference - it automatically evaluates your design with a predictive human performance model (a "cognitive crash dummy").To use Cogtool today, simply create a storyboard of your design idea with sketches, images or on a canvas with CogTool's widgets, demonstrate tasks on that storyboard, then press a button to produce a valid cognitive model predicting how long it will take a skilled user to complete those tasks. CogTool can be used today to baseline your current interface, or compare competitors' interfaces, and predict how much better your new designs will be.Looking toward tomorrow, ongoing research is creating and validating new models to predict other metrics of interest to UI designers, for example, the exploration paths of new users (including the errors they are likely to make).Welcome to this community of UI designers, cognitive modelers, and HCI researchers working together to make predictive human performance modeling a useful tool for design. Please employ, enjoy, and contribute to our cognitive crash dummy, CogTool.Use CogTool TodayYou can use CogTool today, as is, to mock-up a variety of UIs and get reliable predictions of how long a skilled user would take to accomplish tasks on those UIs.The psychological theory that underlies CogTool's predictions of skilled execution time is called the Keystroke-Level Model, created by Stu Card, Tom Moran and Allen Newell in the 1980s and has been validated through decades of research and documented in over 100 research publications. The predictions can be trusted to be within 20% of the what you could measure if you trained users in your new designs, practiced them until they were skilled, and ran controlled time-on-task studies. CogTool has increased the accuracy of the KLM because it applies the theory more consistently through its "modeling by demonstration" approach, and has been reported to be within about 10% of empirical data.Use CogTool to benchmark competitors' products, or your own earlier versions, to be sure that your new design will be more efficient for skilled users. Use CogTool to explore a large design space and only invest in testing a few of the more promising ideas with users. Use CogTool to analyze a current product to find efficiency bottlenecks and focus your redesign efforts. CogTool does not replace user testing, but it brings a complementary analytic technique to the UI design toolbox.The "Use CogTool Today" section includes: * Download CogTool to get CogTool for Mac or PC. * Documentaton and Other Support to get the User Guide and other instructional materials. * Examples to CogTool files with worked-out examples. * Experience Reports to see what others have done with CogTool. * Participate by sharing your questions, experiences, data, or improvements.
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