Abstract
This chapter summarizes the findings of the Seattle Longitudinal Study (SLS) regarding the relationship between cognitive style and 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. The chapter first considers whether the ability measures and the flexibility-rigidity factors defined by the Test of Behavioral Rigidity (TBR) represent independent constructs. It then discusses the effect of flexible behavior at earlier ages in predicting maintenance of cognitive functioning in old age. It also presents evidence on the distinctiveness of the cognitive styles of motor-cognitive flexibility, attitudinal flexibility, and psychomotor speed from the domain of psychometric intelligence as measured in the SLS.
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