Centre for Policy on Ageing
 

 
Individual differences in trajectory of intellectual development over 45 years of adulthood
Author(s)Tannis Y Arbuckle, Urs Maag
Journal titlePsychology and Aging, vol 13, no 4, December 1998
Pagespp 663-675
KeywordsCognitive processes ; Mental clarity ; Longitudinal surveys ; Canada.
AnnotationThe hypothesis that individual differences in adult intellectual development reflect variation in life context and personality was examined in 132 World War II (WWII) veterans. Intelligence data from the Canadian Army M Test were available for 3 occasions: WWII, 1984-1986, and 1989-1991. Performance declined over the 45 years on 5 sub-tests but improved on the 6th (vocabulary). Correlations between WWII and 1989-1990 scores showed considerable stability of individual differences in intelligence over 45 years. Younger age predicted less decline over 45 years on all sub-tests; a more engaged lifestyle predicted less decline on some sub-tests. Predictors of change since 1984-1986 were similar to those for the whole period, Implications for theories of adult intellectual development are discussed. (AKM).
Accession NumberCPA-990218412 A
ClassmarkDA: DF: 3J: 7S

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