Five experiments examined 79 newborns' ability to discriminate and categorize a spatial relation, defined by the left-right spatial position of a blinking object-target with respect to a vertical landmark-bar. Three-day-old infants discriminated the up versus low position of an object located on the same side of the landmark-bar (Experiment 1) and…

This paper presents an overview of the literature on mother-infant attachment behavior. Attachment is defined by Ainsworth as involving affection, discrimination, observable behavior, active participation by both parties, and reciprocal response. The process of attachment is seen by Stone, Smith, and Murphy as taking place in three stages over the…

This paper provides evidence for imitative abilities in neonatal chimpanzees ("Pan troglodytes"), our closest relatives. Two chimpanzees were reared from birth by their biological mothers. At less than 7 days of age the chimpanzees could discriminate between, and imitate, human facial gestures (tongue protrusion and mouth opening). By the time…

This volume is the first in "The Course of Life" series which contains original contributions from an international group of scientists and clinicians who have produced much of the current knowledge about the phases of human personality development. These contributions cover the continuum of human development from the prenatal phase…