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In this meta-analysis of 57 effect sizes from 43 studies across 8 diagnostic categories, robust differences in delay discounting were observed between people with psychiatric disorders and controls. Most individuals with disorders (including depression, bipolar disorder, schizophrenia, borderline personality disorder, bulimia nervosa, and binge-eating disorder) exhibited steeper discounting compared with controls, whereas those with anorexia nervosa exhibited shallower discounting compared with controls. - jamanetwork.com