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Lyons, Michael J.; Panizzon, Matthew S.; Liu, Weijian; McKenzie, Ruth; Bluestone, Noah J.; Grant, Michael D.; Franz, Carol E.; Vuoksimaa, Eero P.; Toomey, Rosemary; Jacobson, Kristen C.; Reynolds, Chandra A.; Kremen, William S.; Xian, Hong – Developmental Psychology, 2017
In this longitudinal study we examined the stability of general cognitive ability (GCA), as well as heterogeneity and genetic and environmental influences underlying individual differences in change. We investigated GCA from young adulthood through late midlife in 1,288 Vietnam Era Twin Study of Aging participants at ages ~20, ~56, and ~62 years.…
Descriptors: Twins, Genetics, Longitudinal Studies, Correlation
McCormick, Bruce K.; And Others – 1983
Alternate forms of the Armed Services Vocational Aptitude Battery (ASVAB) were administered five separate times to 57 men and women of military service age. The objective was to determine to what extent means and cross-session correlations are stable over several administrations. Ten individual subtests, the derived ASVAB area composites and the…
Descriptors: Aptitude Tests, Drills (Practice), Individual Differences, Military Personnel
Fox, Wayne L.; And Others – 1969
A study was designed to examine relationships of aptitude level to training performance on tasks of varying complexity and to determine if differential job training might be required. A complexity rated training battery with eight tasks (simple/choice monitoring, rifle assembly/disassembly, equipment preparation, map symbols, phonetic alphabet,…
Descriptors: Ability, Achievement Rating, Adult Vocational Education, Aptitude