samantha, mother of luke, a 6-week-old baby, decides to do the dishes. she moves his crib to the kitchen. he lies peacefully in the crib, sucking a pacifier. when she opens the tap, luke stops sucking and looks in the direction of the running water. after a couple of minutes, he looks away and starts sucking again. in the context of the information-processing approach to cognitive development, this scenario best illustrates
