ImGo: A Novel Tool for Behavioral Impulsivity Assessment Based on Go/NoGo Tasks.

This article presents the development and validation of ImGo, a novel behavioral impulsivity test based on the Go/NoGo paradigm, designed for assessing impulsivity in the general population. Across three studies, ImGo demonstrated satisfactory test-retest and split-half reliability, as well as partial convergent validity with established measures such as the Stop Signal test and the self-report Impulsive Behavior Scale, particularly relating to the negative urgency subscale. Study 2 explored the relationship between motor impulsivity (ImGo) and oculomotor inhibition (Anti-Saccade task), finding weak but significant associations, while Study 3 established ImGo's discriminant validity by showing negligible correlations with other cognitive functions (e.g., attention, verbal reasoning, intelligence) and personality traits (e.g., borderline, obsessive-compulsive styles) in a large sample. The test is implemented on the open-source Hypothesis platform, enabling flexible administration online or in groups, and has been translated into multiple languages, supporting its suitability for broad research and clinical applications.