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Determinants of cognitive abilities in the elderly
International Journal of Aging & Human Development
|January 1, 1983
Summary
Cognitive abilities in aging men are multidimensional. Verbal intelligence is linked to education, while nonverbal performance is associated with age, suggesting distinct developmental paths.
Area of Science:
- Psychology
- Neuroscience
- Gerontology
Background:
- Adult cognitive development is often viewed as a singular, age-related decline.
- However, individual differences in cognitive trajectories suggest a more complex process.
Purpose of the Study:
- To investigate the distinct antecedents of verbal and nonverbal cognitive abilities in older men.
- To examine the influence of demographic and lifestyle factors on different cognitive domains.
Main Methods:
- Factor analysis of six cognitive tasks (verbal, nonverbal, concrete operations, formal operations, problem-solving) in 115 men aged 50-93.
- Regression analyses using age, education, occupation, retirement, health, activity, and marital status as predictors for identified cognitive factors.
Main Results:
- Two primary factors emerged: a nonverbal/performance factor and a verbal/reasoning factor.
- Age significantly predicted the nonverbal/performance factor.
- Education significantly predicted the verbal/reasoning factor.
- Other demographic and lifestyle variables did not show significant prediction.
Conclusions:
- Verbal and nonverbal cognitive abilities in older adults appear to be influenced by different antecedent factors.
- This supports a multidimensional and multidirectional model of adult cognitive development, rather than a unidirectional, normative decline.