Schizoid-Avoidant Distinction Test (SADT) — Differential Personality Battery
The SADT is a five-measure differential battery resolving one of personality assessment's toughest distinctions: true social disinterest (schizoid) vs. social anxiety with desire for connection (avoidant).
Battery Components
140 items across five validated scales: Schizoid-40 (Winarick's Test of Schizoid Patterns), RSAS-40 (Revised Social Anhedonia Scale), Need to Belong Scale (N2B-10), Rejection Sensitivity Questionnaire (RSQ), and Internalized Shame Scale (ISS).
Psychometric Properties
Normative database: Winarick & Bornstein (2015), N = 310. RSAS internal consistency: α = .84–.90. Pattern-based discrimination algorithm classifying Schizoid vs. Avoidant vs. Mixed presentation using the full multi-scale profile.
Clinical Applications
Schizoid vs. avoidant differential diagnosis, treatment planning, autism spectrum overlap assessment, social anhedonia screening, personality organization assessment, medication response prediction.