repeat themselves in list recall. They seemed less able than the young to engage in recall while monitoring what was being recalled. Less aware of the source of item familiarity, older adults were less likely to inhibit a response where appropriate.
CHI affected the ability to identify and respond to negative facial expression. Addressing these deficits may enhance rehabilitative efforts within the social domain.
Error trials are associated with faster responses than correct trials in simple discrimination tasks suggesting that errors result from impulsive responding. We investigated the relationship between error negativity (Ne/ERN), an event-related potential associated with error detection, and two behavioral indices of response control: response time (RT) differences between incorrect and correct trials (an index of impulsivity) and percentage of errors. Response-locked ERPs were collected from 17 young adults during a visual flanker task. Consistent with previous findings, participants were significantly faster on error trials. However, participants who exhibited larger Ne/ERN peak amplitudes had significantly smaller RT differences, suggesting a more controlled response strategy. Furthermore, Ne/ERN latencies were positively associated with percentage of errors. These findings are consistent with the view that the Ne/ERN reflects the activity of a monitoring system that is closely linked to remedial systems responsible for individual differences in response control or impulsive behavior.
The forensic use of hypnosis is increasing. A hypermnesic procedure was used in an experiment that calls this practice into question. Subjects tried for a week to recall 60 previously presented pictures. They were then either hypnotized or not and encouraged to recall even more pictures. Most of the newly recalled material was incorrect, especially for highly hypnotizable subjects in the hypnosis condition. Such errors in recall can have profound implications for forensic investigations.
The degree to which inhibitory regulation is related to the initial perception of information or to the control of response tendencies was examined by asking participants to read paragraphs that included italicized, to-be-ignored words. Older adults were more likely than younger adults to begin vocalization of the italicized words and to make text comprehension errors involving the to-be-ignored information. However, younger adults were subsequently more likely to recognize the words they had apparently ignored, suggesting that inhibitory regulation controls selectivity in response rather than initial perception. Commonalities between inhibitory regulation and source monitoring paradigms are demonstrated, and discussion focuses on the degree to which on-line monitoring of goal-relevant response underlies age-related deficits in both domains.
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