developmental psychology - 6

developmental psychology

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

zygote

the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo.

embryo

the developing human organism from about 2 weeks after fertilization through the second month.

fetus

the developing human organism from 9 weeks after conception to birth.

teratogens

(literally, "monster makers") agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm.

fetal alcohol syndrom (FAS)

physical and cognitive abnormalities in children caused by a pregnant woman's heavy drinking. In severe cases, signs include a small, out-of-proportion head and abnormal facial features.

habituation

decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a stimulus, their interest wanes and they look away sooner.

maturation

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

cognition

all the mental activities associated with thinking, knowing, remembering, and communicating.