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Linear and nonlinear effects of aging on categorizing and naming faces
1Age and Cognitive Performance Research Centre, University of Manchester, England.
Psychology and Aging
|June 1, 1992
Summary
Cognitive slowing in older adults was studied using face processing tasks. While categorization showed linear slowing, name retrieval exhibited exponential age-related delays, possibly due to tip-of-the-tongue states.
Area of Science:
- Cognitive Psychology
- Neuroscience of Aging
- Human Perception
Background:
- Aging impacts cognitive functions, including face processing.
- Understanding age-related changes in cognitive speed is crucial for gerontology.
Purpose of the Study:
- To investigate age-related differences in face processing speed across various tasks.
- To examine cognitive slowing models in older adults.
Main Methods:
- Adults aged 54-84 completed 5 face processing tasks: structural, familiarity, semantic, first-name decisions, and name retrieval.
- Reaction times and distributions were analyzed for younger (<65) versus older (>65) subjects.
Main Results:
- Categorization tasks (1-4) showed linear cognitive slowing with age.
- Name retrieval performance demonstrated an exponential increase in reaction time with age.
- Linear functions for reaction time distributions supported age-related slowing, except for name retrieval.
Conclusions:
- A simple multiplicative model of cognitive slowing is only partially supported.
- Name retrieval difficulties in older adults may stem from age-related increases in tip-of-the-tongue states.
- Age-related face identification deficits are task-dependent.