Group differences in cognitive domains. Youths in the psychosis spectrum (PS) group consistently showed significantly (p < .0125) lower efficiency scores in all four cognitive domains: (A) executive control, (B) complex cognition, (C) episodic memory, and (D) social cognition. Efficiency scores reflect the average Z score (sum of Z score for accuracy and −1 multiplied by Z score for speed) per group, such that higher scores indicate better performance. Error bars represent ± SE of the group average. TD, typically developing.