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Developmental Influences on Adult IntelligenceThe Seattle Longitudinal Study$
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K. Warner Schaie

Print publication date: 2012

Print ISBN-13: 9780195386134

Published to Oxford Scholarship Online: March 2015

DOI: 10.1093/acprof:osobl/9780195386134.001.0001

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Lifestyle Variables That Affect Intellectual Functioning

Lifestyle Variables That Affect Intellectual Functioning

(p.311) {12} Lifestyle Variables That Affect Intellectual Functioning
Developmental Influences on Adult Intelligence

K. Warner Schaie

Oxford University Press

This chapter summarizes the findings of the Seattle Longitudinal Study (SLS) regarding lifestyle variables that affect intellectual functioning. First launched in 1956, the SLS was designed to investigate various aspects of intellectual development from early adulthood to old age in a random sample of 500 individuals aged 25–95 years. To assess the relationship between lifestyle characteristics and maintenance of cognitive function, individuals were clustered in terms of their cluster scores on the Life Complexity Inventory variables, resulting in the identification of four types of individuals with distinct lifestyle characteristics who also exhibited significant differences in maintaining high levels of cognitive performance. The relationship between leisure activities and cognitive functioning, the effects of retirement on the lifestyle variables, and the effects of work characteristics and retirement status on cognitive functioning were also examined.

Keywords:   lifestyle, intellectual functioning, Seattle Longitudinal Study, intellectual development, early adulthood, old age, Life Complexity Inventory, leisure, cognitive functioning, work

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