Journal of the International Neuropsychological Society



Metamemory for faces following frontal lobe damage


JASMEET K.  PANNU  a1 c1 , ALFRED W.  KASZNIAK  a1 a2 and STEVEN Z.  RAPCSAK  a1 a2 a3
a1 Department of Psychology, University of Arizona, Tucson, Arizona
a2 Department of Neurology, University of Arizona, Tucson, Arizona
a3 Neurology Section, Southern Arizona VA Health Care System, Tucson, Arizona

Article author query
pannu jk   [PubMed][Google Scholar] 
kaszniak aw   [PubMed][Google Scholar] 
rapcsak sz   [PubMed][Google Scholar] 

Abstract

Previous research has provided evidence of metamemory impairments in patients with frontal lobe damage on verbal episodic memory tasks. In the present study, we employed metamemory paradigms to investigate whether patients with frontal lesions show monitoring deficits on semantic memory tasks involving facial stimuli. Patients with frontal lobe damage and healthy control subjects made memory decisions to famous faces in a retrospective confidence judgment task and in a prospective feeling-of-knowing (FOK) task. Results indicated that frontal patients performed worse than controls on the retrospective confidence task, but there were no differences between the groups on the FOK task. These findings suggest that metamemory deficits in frontal patients are not confined to specific stimulus domains (words vs. faces) or memory systems (episodic vs. semantic). In addition, the dissociation between retrospective confidence judgments and FOK accuracy documented in this study and also in a recent report by Schnyer et al. suggesting that metamemory should not be considered a unitary function with a single neuroanatomic substrate. (JINS, 2005, 11, 668–676.)

(Received December 18 2004)
(Revised July 11 2005)
(Accepted July 11 2005)


Key Words: Memory; Monitoring; Control; Feeling of knowing; Metacognition; Confidence.

Correspondence:
c1 Reprint requests to: Jasmeet K. Pannu, Department of Psychology, University of Arizona, 1503 E. University Blvd., Tucson, AZ 85721. E-mail: Jasmeet@u.arizona.edu


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