Ronald, A., Spinath, F. M. & Plomin, R. (2002). The etiology of high cognitive ability in early childhood. High Ability Studies, 13, 103-112.
Both the environment and genetics are likely to
influence the development of cognitive talent during the preschool years.
It is not known to what degree or how these influences differ to those throughout
the range of ability. 1,943 twin pairs were assessed at ages 2, 3 and 4 using
diverse verbal and nonverbal cognitive measures. Consistently high scoring
children were selected on a general cognitive factor. From behavioural genetic
model fitting analyses, substantial shared environmental (70%) and modest
genetic influences (20%) were found in the high group and this matched the
etiology of the entire sample. Strong genetic predisposition was not apparent.
Individual differences in cognitive ability and high ability is largely due
to shared environment during the preschool years.
Zurück zum Publikationsverzeichnis