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Hemispheric differences in preferred modes of information processing and the aging process.

J A Stern, A C Baldinger

    The International Journal of Neuroscience
    |January 1, 1983
    PubMed
    Summary
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    Older adults show intelligence declines, especially those with a preferred right-hemisphere processing style (right movers). This contrasts with young adults, suggesting age exacerbates processing mode effects on cognition.

    Area of Science:

    • Cognitive Psychology
    • Neuroscience
    • Gerontology

    Background:

    • Aging is associated with declines in fluid intelligence, but not necessarily crystallized intelligence.
    • Lateral eye movements (LEM) are proposed to indicate preferred modes of information processing, potentially linked to hemispheric dominance.
    • Previous research has not fully explored the interaction between aging, cognitive abilities, and preferred information processing styles.

    Purpose of the Study:

    • To investigate the relationship between preferred modes of information processing (indexed by LEM) and cognitive changes during aging.
    • To examine whether specific processing styles influence the rate of decline in fluid and crystallized intelligence in older adults.

    Main Methods:

    • Participants were divided into young and old groups based on age.

    Related Experiment Videos

  • Subjects were categorized as 'right movers' or 'left movers' based on their dominant direction of lateral eye movements during cognitive tasks.
  • Performance on tasks assessing both fluid and crystallized intelligence was compared across age and LEM groups.

    • Main Results:

    • Older right movers outperformed older left movers on both fluid and crystallized intelligence tasks.
    • Older left movers exhibited significantly poorer performance compared to young left movers.
    • No significant performance differences were observed between young and old right movers.

    Conclusions:

    • Preferred modes of information processing may exert a stronger influence on cognitive function in older adults compared to younger individuals.
    • Individuals preferring right-hemisphere processing (right movers) appear more vulnerable to age-related cognitive declines.
    • These findings highlight the differential impact of cognitive processing styles on intelligence across the lifespan.