PSYB32H3 Chapter Notes - Chapter 4: Subjective Constancy, Weaning, Depth Perception
Document Summary
Chapter 4 infancy: sensation, perception, and learning. Neonates: newborn babies, their noses, ears and entire heads often bear the marks of the pressures exerted on them as they passed through the birth canal. Their skin is often red, wrinkled, and blotchy, partly as a result of floating for nine months in the amniotic fluid. Their heads are oversized in proportion to their bodies, and their little legs appear weak, even useless, most of these characteristics disappear even before the neonate period of three to four weeks is over. Reflex: a human"s involuntary response to external stimulation. Abnormalities in a baby"s reflexes during the first days or weeks after can be useful indicators for identifying visual and hearing problems. Infant state: a recurring pattern of arousal in the newborn, ranging from alert, vigorous, wakeful activity to quiet, regular sleep. Internal forces play a central role in infant states and their changes.