Chapter

Studies of Cohort and Period Differences

K. Warner Schaie

in Developmental Influences on Adult Intelligence

Published in print February 2005 | ISBN: 9780195156737
Published online September 2007 | e-ISBN: 9780199786817 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195156737.003.0006
 Studies of Cohort and Period Differences

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This chapter reports findings regarding cohort and period differences in cognitive abilities as well as on other variables included in the Seattle Longitudinal Study. Here, expanded operational definitions are provided for the computation of cohort and period effects and cumulative findings through the seventh study cycle are expanded and updated. Possible applications of the period effect estimates are considered. An example is provided of how corrections for cohort and period effects can be applied to adjust longitudinal estimates to obtain increased generalizability.

Keywords: Seattle Longitudinal Study; intellectual development; cohort differences; period differences; cognitive abilities; practical intelligence; latent constructs; cognitive styles

Chapter.  7543 words.  Illustrated.

Subjects: Developmental Psychology

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