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Gallacher, John; Bayer, Anthony; Dunstan, Frank; Yarnell, John; Elwood, Peter; Ben-Shlomo, Yoav – Intelligence, 2009
The association between cognitive function and mortality is of increasing interest. We followed 1870 men aged 55-69 years at cognitive assessment for 16 years to establish associations with all case and cause specific mortality. Cognitive assessment included AH4, 4 choice reaction time (used as estimates of mid-life cognition) and the National…
Descriptors: Reaction Time, Causal Models, Reading Tests, Diseases

Nettelbeck, Ted; Rabbitt, Patrick M. A. – Intelligence, 1992
Measures of four-choice reaction time, inspection time, and scores on a speeded coding-substitution task obtained from 104 adults aged 54 to 85 years were found to account for almost all age-related changes in cognitive performance on a number of indices of general fluid ability. (SLD)
Descriptors: Adults, Age Differences, Aging (Individuals), Cognitive Ability

Kranzler, John H.; Jensen, Arthur R. – Intelligence, 1989
A meta-analysis of research on the relationship between inspection time (IT) and IQ was performed. The analysis was designed to determine whether a non-zero relationship between IT and IQ exists, estimate the size of this relationship, and test whether IT is ontogenetically related to "g" (intelligence). (TJH)
Descriptors: Adults, Age Differences, Child Development, Children