a branch of psychology that studies physical, cognitive, and social change throughout the life span.
the developing human organism from 9 weeks after conception to birth.
the developing human organism from about 2 weeks after fertilization through the second month.
the fertilized egg; it enters a 2 week period of rapid cell division and develops into an embryo.
agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm
Fetal alcohol syndrome (FAS)
physical and cognitive abnormalities in children caused by a pregnant woman's heavy drinking. In severe cases, symptoms include noticeable facial misproportions.
decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner
biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience.
all the mental activities associated with thinking, knowing, remembering, and communicating
a concept or framework that organizes and interprets information.
interpreting our new experience in terms of our existing schemas
adapting our current understandings (schemas) to incorporate new information
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 preoperational child's difficulty taking another's point of view
theory of mind
people's ideas about their own and others' mental states—about their feelings, perceptions, and thoughts, and the behaviors these might predict
concrete operational stage
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.
Formal operational stage
in Piaget's theory, the stage of cognitive development (normally beginning about age 12) during which people begin to think logically about abstract concepts
Autisma disorder that appears in childhood and is marked by deficient communication, social interaction, and understanding of others' states of mind
the fear of strangers that infants commonly display, beginning by about 8 months of age.
an emotional tie with another person; shown in young children by their seeking closeness to the caregiver and showing distress on separation.
an optimal period shortly after birth when an organism's exposure to certain stimuli or experiences produces proper development.
the process by which certain animals form attachments during a critical period very early in life.