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48. Preliminary examination of a measure of metacognitive perspective-taking: The Interpersonal Block Assembly Task
People with schizophrenia-spectrum psychoses exhibit deficits in both emotional perspective-taking and metacognition (i.e., thinking about thinking) that are related to functional outcomes. Current measurement paradigms in both areas are subject to limitations. This study examines preliminary evidence of reliability and construct validity for a measure of metacognitive perspective-taking, the Interpersonal Block Assembly Task (IBAT). The IBAT requires participants to describe a block design to the administrator such that the administrator can assemble the design accurately, without seeing the design. The administrator provides feedback to the participant regarding their understanding of the design throughout the task. We administered the IBAT to 39 participants with schizophrenia-spectrum psychoses and 35 healthy participants, along with selected symptom, neurocognitive, and social cognitive measures. IBAT scores in the schizophrenia group were significantly lower than the healthy control group. Higher IBAT scores for those with schizophrenia correlated with better social cognition, neurocognition, and intelligence, and reduced avolition. Reliability indices suggest that the IBAT can be reliably scored and has good internal consistency (α=.93). Taken together, this work provides preliminary evidence for the utility of the IBAT as a measure of metacognitive perspective-taking in an interpersonal context for those with schizophrenia-spectrum psychoses.