One of a pair of identical twins was given extra practice in pre-walking movements, and the other twin was not. If the twin with extra practice walked several months earlier, but the other twin caught up within four months, this would illustrate which of Aslin's five types of environmental influence?

Question

Quizplus · Accepted Answer

Facilitation refers to an environmental influence that enhances the expression of an innate capacity. In this case, the extra practice provided to one twin facilitated their earlier walking. However, the fact that the other twin caught up within four months suggests that both twins had the innate capacity to walk at a similar time, and thus maturation (the unfolding of genetically programmed developmental changes) likely played a role as well.

One of a Pair of Identical Twins Was Given Extra