CogTool

A cognitive modeling tool developed at Carnegie Mellon University that generates quantitative predictions of human task performance times based on the Keystroke-Level Model (KLM) and the ACT-R cognitive architecture. Designers create storyboards of user interface screens and demonstrate tasks, and CogTool automatically produces a KLM that estimates how long a skilled user would take to complete the task. Originally designed for visual graphical user interfaces, CogTool has been explored for modeling screen reader interaction, revealing significant challenges in adapting visual interaction models to auditory interfaces.