Abstract:
:We tested the hypothesis that psychopathy is associated with abnormal processing of semantic and affective verbal information. In Task 1, a lexical decision task, and in Task 2, a word identification task, participants responded faster to concrete than to abstract words. In Task 2, psychopaths made more errors identifying abstract words than concrete words. In Task 3, a word identification task, participants responded faster to positive than to negative words. In all three tasks, nonpsychopaths showed the expected event-related potential (ERP) differentiation between word stimuli, whereas psychopaths did not. In each task, the ERPs of the psychopaths included a large centrofrontal negative-going wave (N350); this wave was absent or very small in the nonpsychopaths. The interpretation and significance of these differences are discussed.
journal_name
Psychophysiologyjournal_title
Psychophysiologyauthors
Kiehl KA,Hare RD,McDonald JJ,Brink Jsubject
Has Abstractpub_date
1999-11-01 00:00:00pages
765-74issue
6eissn
0048-5772issn
1540-5958journal_volume
36pub_type
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