The Schedule for Nonadaptive and Adaptive Personality (SNAP) is a self-reporting questionnaire for assessment of personality disorders (Axis II of the Diagnostic and Statistical Manual of Mental Disorders) [1] introduced in 1993 by Lee Anna Clark.
[2] It is not to be confused with SNAP-IV — the Swanson, Nolan, and Pelham Rating Scale, rev.
[3] Initially it was compiled from the DSM-III criteria.
Twelve of them assess maladaptive personality: mistrust, self-harm, eccentric perceptions, aggression, manipulativeness, entitlement, detachment, exhibitionism, dependency, impulsivity, workaholism, propriety, and three assess rather broad traits: negative temperament, positive temperament, disinhibition, [4] The convergence of SNAP with other independently developed tests, such as DAPP-BQ (Dimensional Assessment of Personality Pathology—Basic Questionnaire), are noted in literature.
[citation needed][5] One study provided some evidence for the test-retest reliability and predictive validity.