The only type of infant learning not discussed in Introduction to Psychology is habituation and dishabituation. Habituation is actually a function of memory and simply means that you have seen or heard something often enough that you are accustomed to it or it now bores you. Dishabituation happens when there is a change in the environment, so we pay attention to the new thing, whether it's a new person, toy, or mobile. Hearing is well developed at birth, but during the first year, babies start to organize sounds into complex patterns. They also being screening out sounds that are not relevant to their language community around six months of age.
Visual perception proceeds more slowly.
By two months, infants can distinguish colors and can focus their eyes on whatever interests them. By eleven months, infant visual perception is equivalent to the perception of adults. Depth perception is the ability to judge the ditance of objects from one another and from ourselves. The ability to distinguish depth is actually a series of cognitive changes that occur over a period of months. Around six months, infants begin to use pictorial or monocular cues to depth.