Factor structure, construct validity, and age- and education-based normative data for the Parametric Go/No-Go Test.

The Parametric Go/No-Go (PGNG) test assesses cognitive domains including attention and executive functioning with three levels of increasing difficulty. Level 1 measures accuracy and response time to three targets. Level 2 adds a nonrepeating rule, measuring response time to two targets, accuracy for targets, and accuracy for appropriate inhibition. Level 3 has three targets with the same nonrepeating rule. The task shows good construct validity, and factor analyses show adequate ability to distinguish between processing speed, sustained attention, and inhibition. Normative data for the PGNG, stratified by age and education, as well as strategies for identifying atypical responding, are presented.