摘要
Babies react to changes in the characteristics of objects,presenting haptic recognition after a period of familiarization.We aimed to verify if infants responded to the different spatial orientations of an ergonomic pacifier in the mouth.With informed consent,10 babies(271.6±60.8 days),users of ergonomic pacifiers,revealed motor behaviors that were divisible into three categories,sometimes through successive actions(i.e.,perception-action cycles were present):(i)repositioned correctly the pacifier,through different modes;(ii)repositioned it,but incorrectly,through different modes;and(iii)rejected the pacifier.So,these babies detected the incorrect position of the pacifier,and acted according to the principle of motor equivalence,since they implemented variations of a solution for the same need.