AP Psychology Unit Six Developmental

a branch of psychology that studies physical, cognitive, and social change throughout the life span.

biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience.

in Piaget's theory, the stage (from birth to about 2 years of age) during which infants know the world mostly in terms of their sensory impressions and motor activities.

the awareness that things continue to exist even when not perceived.

in Piaget's theory, the stage (from 2 to about 6 or 7 years of age) during which a child learns to use language but does not yet comprehend the mental operations of concrete logic.

the principle (which Piaget believed to be a part of concrete operational reasoning) that properties such as mass, volume, and number remain the same despite changes in the forms of objects.

in Piaget's theory the stage of cognitive development (from about 6 or 7 to 11 years of age) during which children gain the mental operations that enable them to think logically about concrete events.

in Piaget's theory, the stage of cognitive development (normal beginning about age 12) during which people begin to think logically about abstract concepts.

an emotional tie with another person; shown in young children by their seeking closeness to the caregiver and showing distress on separation.

the transition period from childhood to adulthood, extending from puberty to independence.