Illusions of Inference: Are People with Schizotypal Tendencies More Vulnerable? SHARON L. HANNIGAN, St. Lawrence University, & CATHERINE L. HARRIS, Boston University-People sometimes mistake the schematic and backward causal inferences they draw for actual occurrences (Hannigan & Reinitz, 2001, 2003). This study explored whether students who report schizotypal personality traits are more susceptible to illusions of inference than non-trait controls. Participants completed the Schizotypal Personality Questionnaire and then viewed four thematically coherent action sequences (e.g., shopping). Twenty minutes later, a recognition test was administered consisting of old (previously seen) and new (not seen) slides. New slides set the stage for schematic (high/low schema-relevant) and causal (forward/backward) inferential errors. Compared with controls, those with schizotypal features had lower mean confidence in old and higher mean confidence in all new conditions, signaling difficulty discriminating old and new information. Elevated confidence in schema-relevant and backward – but not forward - inference foils in the schizotypal group indicate over-reliance on contexal and causal schemas in the face of impoverished episodic memory.