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Causes and Consequences of Cognitive Functioning Across the Life Course
Educational Researcher (Washington, D.C. : 1972)
|March 3, 2012
Summary
Intelligence quotient (IQ) primarily impacts economic success through education, not directly. Beyond education, IQ influences adult life behaviors like drinking and internet use.
Area of Science:
- Psychology
- Sociology
- Behavioral Science
Background:
- Cognitive ability research traditionally focuses on genetic/experiential origins and economic outcomes.
- The role of intelligence quotient (IQ) across the entire lifespan requires broader investigation.
Purpose of the Study:
- To examine the wide-ranging consequences of IQ throughout adult life.
- To investigate the mediating role of education in IQ's economic effects.
- To identify non-economic life course correlates of adolescent cognition.
Main Methods:
- Analysis of longitudinal data, primarily from the Wisconsin Longitudinal Study.
- Statistical examination of IQ's influence on educational attainment, job performance, earnings, and wealth.
- Survey of long-term associations between adolescent cognition and adult behaviors.
Main Results:
- Educational attainment is the primary mediator of IQ's effect on economic success.
- IQ shows minimal direct impact on job performance, occupational standing, earnings, or wealth when education is controlled.
- Adolescent cognitive ability is correlated with adult drinking behavior, survey participation, internet use, and menopause timing.
Conclusions:
- The economic impact of IQ is largely indirect, channeled through educational achievement.
- IQ has significant, sometimes unexpected, associations with various life course outcomes beyond economic status.
- Understanding the multifaceted consequences of cognitive ability is crucial for a comprehensive life course perspective.
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