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Exploring the Genetic and Environmental Etiology of High General Cognitive Ability in Fourteen- to Thirty-Six-Month-Old Twins.
Peer reviewed Peer reviewed
Petrill, Stephen A.; And Others – Child Development, 1998
Examined the origins of high general cognitive ability (g) in twins who were participating in the MacArthur Longitudinal Twin Study. Formed high g groups from the 19th percentile and above at each age. Results suggested increasing genetic influence and increasing genetic stability from 14 to 36 months and substantial genetic influences with…
Descriptors: Cognitive Ability, Cognitive Development, Etiology, Intellectual Development
Conceptions of Ability and Intelligence.
Peer reviewed Peer reviewed
Nicholls, John N.; And Others – Child Development, 1986
Explores age differences (6 to 22 years of age) in conceptions about the nature of the skills required by verbal and nonverbal (abstract) intelligence tests. (HOD)
Descriptors: Age Differences, Cognitive Ability, Cognitive Development, Concept Formation
Infant Information Processing in Relation to Six-Year Cognitive Outcomes.
Peer reviewed Peer reviewed
Rose, Susan A.; And Others – Child Development, 1992
Infants' visual recognition memory (VRM) at seven months was associated with their general intelligence, language proficiency, reading and quantitative skills, and perceptual organization at six years. Infants' VRM, object permanence, and cross-modal transfer of perceptions at one year were related to their IQ and several outcomes at six years.…
Descriptors: Academic Achievement, Cognitive Ability, Early Reading, Followup Studies