A cognitive peculiarity specific to schizophrenia

Re-examined the finding of Wechsler that schizophrenic patients had reduced scores on his Picture Completion test (PC). Because PC is resistant to impairment and not known to be reduced in other groups, this finding, if confirmed, would represent a cognitive pattern specific to schizophrenics, unlike other cognitive peculiarities that have been attributed to them. Fifty schizophrenic patients taken at random were found to have PC scores very significantly lower than Vocabulary, while in a matched group of depressives and patients with personality disorders there was no difference.