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J Clin Exp Neuropsychol ; 22(1): 1-15, 2000 Feb.
Article in English | MEDLINE | ID: mdl-10649541

ABSTRACT

To investigate judgment of the frequency and recency of events relative to word list recall in children following closed head injury (CHI), 124 children and adolescents, including 79 severe CHI patients (mean age at test = 13.2 years), 27 mild CHI cases (mean age at test = 12.1 years), and 18 uninjured comparison subjects (mean age = 12.8 years) were studied. The mean postinjury interval was 63.6 months for the severe and 46.7 months for the mild CHI groups. The experimental tasks included estimation of the frequency of presentation of words and designs and recency judgment to select the most recently presented of two stimuli on verbal (words) and nonverbal (faces) tasks. To compare frequency and recency judgments to performance on a task which has been shown to be sensitive to CHI severity and age at test, verbal recall was tested using the California Verbal Learning Test-Children's Version. Severity of CHI (group) affected verbal recall across trials and after delays, but had no effect on estimating frequency and isolated effects on judgment of recency. Age was also primarily related to verbal recall. A subgroup of severe CHI patients with frontal lesions was impaired on delayed recall. The results are discussed in relation to previous research on the effects of CHI on processing the frequency and recency of events.


Subject(s)
Head Injuries, Closed/physiopathology , Mental Recall/physiology , Verbal Learning/physiology , Adolescent , Attention/physiology , Brain Injury, Chronic/physiopathology , Brain Injury, Chronic/psychology , Child , Child, Preschool , Female , Follow-Up Studies , Frontal Lobe/injuries , Frontal Lobe/physiopathology , Head Injuries, Closed/psychology , Humans , Male , Neuropsychological Tests , Pattern Recognition, Visual/physiology , Retention, Psychology/physiology
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