SADT — Schizoid-Avoidant Distinction Test
Five-measure differential battery distinguishing schizoid from avoidant personality. Based on Winarick & Bornstein (2015) norms (N=310). 140 items.
The Schizoid-Avoidant Distinction
Schizoid and avoidant presentations share a surface presentation of social withdrawal. The differential diagnosis is clinically consequential because the underlying mechanisms differ fundamentally and call for different interventions.
Schizoid Personality
Reduced motivational pull toward social contact. Social anhedonia — absent pleasure from social interaction — rather than fear of rejection. Low need-to-belong scores. Social withdrawal reflects motivational attenuation, not anxiety.
Key indicator: High RSAS (Revised Social Anhedonia Scale), low N2B (Need to Belong)
Avoidant Personality
Intact motivational pull toward social contact but inhibited by anticipation of rejection. Approach-avoidance conflict — wants connection but fears it. High need-to-belong scores frustrated by anxiety.
Key indicator: Low RSAS (normal social hedonic capacity), high N2B, high ECR-Anxiety
The Five-Measure Battery
Learn the Science
Review the Winarick & Bornstein (2015) normative study and the theoretical framework for the schizoid-avoidant distinction before administering the battery.
Read the background article →Take the Battery
Five measures: RSAS (Revised Social Anhedonia Scale), N2B (Need to Belong Scale), RSQ (Relationship Styles Questionnaire), ISS (Interpersonal Sensitivity Scale), and Schizoid-40 (IPIP Schizoid Personality Scale). 140 total items.
Get Your Report
Receive a scored report with dimensional profiles across all five measures, normative comparisons against the Winarick & Bornstein sample, and a differential classification with probability estimates.