Background: Although distinctive neuropsychological impairments have been delineated in children with chromosome 22q11 deletion syndrome (22q11DS), social skills and social cognition remain less well-characterised. Objective: To examine social skills and social cognition and their relationship with neuropsychological function/behaviour and…

Eighty-seven normal older people were administered the Wisconsin Sorting Test on two occasions averaging over a year apart. There were average retest gains of 5 to 7 standard score points. The standard error of prediction, standard error of difference, and abnormal test-retest discrepancy scores were calculated for clinical use. (SLD)