Developmental Psychology
a branch of psychology that studies physical, cognitive, and social changes throughout the lifespan
What are the two studies that developmental psychologists use?
cross-sectional and longitudinal studies
What are the three major issues within developmental psychology?
nature/nurture influence on development, continuity vs. stages, and stability vs. change
Jean Piaget
created the stages of cognitive development
Lawrence Kohlberg
created stages of moral development
Erik Erikson
created stages of psychosocial development
Temperament
emotional reactivity and intensity
Zygote
fertilized egg; enters a two-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
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, signs include a small, out-of-proportion head and abnormal facial features
Habtituation
decreasing responsiveness with repeated stimulation; as infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner
Maturation
biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience
Adolescence
the transition period from childhood to adulthood, extending from puberty to independence; mature sexually
What does adolescence begin with?
puberty-a surge of hormones which triggers a series of bodily changes
What does early maturation look like for boys?
stronger/more athletic as a teen; tend to be more popular, self-assured, and independent but also more at risk for alcohol use, delinquency, and premature sexual activity
What does early maturation look like for girls?
if her body and hormones feel off from emotions and her friends, she might associate with older girls or get teased/sexually harassed
What ages are classified as early adulthood?
20s and 30s
What is classified as middle adulthood?
40s to age 65
What is classified as late adulthood?
after 65
Menopause
when women stop their period and can no longer reproduce (age 50)
Death-deferral phenomenon
people are more likely to die right after Christmas or a milestone
Gender
the socially influenced characteristics by which people define girl/woman and boy/man
Aggression
any physical or verbal behavior intended to hurt or destroy