Biomedical subjects

Michel Isingrini

Publications and source records attributed to Michel Isingrini.

22 records · Page 2Linked to original sources

PubMed2002

Alzheimer's disease and feeling-of-knowing in episodic memory.

Episodic memory feeling-of-knowing (FOK) was examined in 16 patients with Alzheimer's disease (AD), 16 elderly participants, and 16 younger adults. Participants were given cued recall and recognition tests of 20 critical cue-target words. Subsequently, they judged their FOK for non-recalled words in terms of how likely they thought they would be to recognize the keywords on a subsequent recognition test. The results indicated dementia-related deficits on both the recall and recognition tests. Compared to older adults, AD patients exhibited impaired FOK accuracy. This pattern of outcome indicates that early AD is associated with a deficit in episodic memory and a deficit in memory monitoring for newly learned information. Furthermore, our observation revealed that in AD, episodic memory may be a more important factor than executive function in explaining the FOK inaccuracy.

Adult↗

PubMedDate not supplied

Executive functioning and judgment-of-learning versus feeling-of-knowing in older adults.

Feeling-of-knowing (FOK) accuracy and judgment-of-learning (JOL) accuracy were compared on separate, identical, episodic-memory tasks. The results indicated that these two measures were not correlated, suggesting that they do not tap the same metacognitive ability. We also looked at whether FOK and JOL accuracies were related differently to higher order executive functioning. In order to take advantage of within-subject variability in cognitive performance, older adults were selected as participants. They were administered the standard neuropsychological tests used to assess executive functioning. A correlational analysis clearly showed that only FOK accuracy was correlated with the executive measures, suggesting that executive control is not equally implicated in FOK and JOL.

Aged↗

PubMedDate not supplied

Age-related differences in the relation between monitoring and control of learning.

The manner in which aging affects the utilization of monitoring in the allocation of study time was investigated by having adults learn paired associates during two study-recall tests. First participants learned the 40 critical cue-target pairs. Then they had to recall the target of each pair and make a feeling-of-knowing (FOK) judgment. Finally, they studied the 40 cue-target pairs on a self-paced study trial and then recalled the items. A total of 24 elderly adults and 23 young adults served as participants. The results indicated that every group of subjects allocated their self-paced study time partly in accordance with their FOK judgments, with items higher in FOK receiving less self-paced study time. The magnitude of this relationship was significantly different in young and old subjects. Moreover, age-related differences in the allocation of study time accounted for the age-related differences in memory performance.

Adult↗

PubMedDate not supplied

Age-related cognitive slowing: the role of spontaneous tempo and processing speed.

This research studied the relationships between two types of slowing observed in aging-loss of general processing speed and slowing of spontaneous tempo-in an attempt to test the assumption that there is an internal timing mechanism responsible for cognitive age-related decrease. Processing speed has been evaluated as a mediator of the relationship between age and working memory, concurrently with spontaneous tempo measures. The authors compared the performance of young and older adults on tasks involving spontaneous motor tempo, processing speed, and working memory. The findings confirmed the agerelated slowing of spontaneous motor tempo but did not indicate superiority of tempo mediation in the decline in working memory. Processing speed appeared to be a major mediator of working memory, but also of spontaneous tempo slowing.

Adult↗