One normal and one schizophrenic group, each consisting of 32 adult males, were required to sort cards bearing the name of a common object with 3 guide-card words--one sharing a concept with the sorting-card word, one with an associate connection to it, and one which was irrelevant. The schizophrenics were expected to make more associative errors than the normals. The results indicated that both difficulty in forming concepts and susceptibility to associative distraction are in part responsible for the fact that schizophrenics show more associative intrusions than do normals. 23 references. (PsycINFO Database Record (c) 2006 APA, all rights reserved)