Kuhlmeier Et Al

Kuhlmeier et al.(2003) showed 12-month-olds animation of a triangle "helping" a ball move up a hill and a square trying to "hinder" the ball.Subsequently, they found the infants:

A) looked longer when the ball approached the "helper"
B) looked longer when the ball approached the "hinderer"
C) looked randomly between the "helper" and "hinderer"
D) did not seem to dishabituate to either the "helper" or the "hinderer"