Identifying a cognitive impairment subgroup in adults with mood disorders

We hypothesized that only a minority of patients with mood disorders have measurable cognitive impairment, and this minority drives the small-to-medium effect sizes detected in group studies. Removal of this minority from group statistical analyses will illustrate that the majority appear to have broadly normal cognitive functioning.Participants were adults between the ages of 20 and 54, including 659 healthy control subjects, 84 unmedicated...