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…

An adaptive network model is proposed to represent the structure and processing of knowledge. Accessibility of subjects' stored information was measured. Relationships exist among (a) frequency of verifying a test relation, (b) other relations involving concepts used to evaluate test relation, (c) frequency of verifying those relations. (CHK)

A variant of the Peterson (1959) paradigm was used to investigate retrieval of single pairs of items varying in imagery value. Latency to respond showed that if one item was concrete, no differential retrieval speeds were found. This result supports an organizational view of imagery. (CHK)

Analyzes data from three experiments that investigated the effect of decision making on memory. Results indicated that, whether internally generated or externally provided, decisions produce a reorganization of memory traces, which produces differential accessability of supporting and contradictory facts. Also concludes that this differential…

Subjects were asked to encode and recall lists of words under the influences of marijuana and a marijuana placebo. Free recall was more complete when both encoding and recall were after marijuana use than in the encode-marijuana, recall-placebo state. Recall must depend on restoration of dissociated encoding state. (CHK)

Endpoint and distance effects have been observed in the protocols of subjects learning linear orderings. These were produced by subjects learning the frequency of word occurrence as the greater member of a relationship. Error patterns were similar on all trials. (CHK)

The hypothesis that free recall curves reflecting effects of serial position, presentation time and delay of recall are attributable to subjects' pattern of rehearsal was explored. Experiments varied the patterns of rehearsal to examine the effects on recall. (CHK)

Short-term retention of temporal and spatial order information were compared using the distractor paradigm. Use of phonemic coding and coding of information about temporal-spatial patterns were interrupted to observe subject's reaction and ability to recall. (CHK)

A task required subjects to make a word-nonword decision to visually presented items--words with a high or low number of meanings or lawful nonwords. Words with several meanings produced shorter decision times, indicating that words with multiple meanings have multiple memory entries. (CHK)