Unit 9: Developmental Psychology

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65 Terms

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developmental psychology

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

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zygote

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

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embryo

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

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fetus

the developing human organism from 9 weeks after conception to birth

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teratogens

agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm

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fetal alcohol syndrome

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

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habituation

decreasing responsiveness with repeated exposure to a stimulus

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maturation

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

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cognition

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

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schema

a concept or framework that organizes and interprets information

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assimilation

interpreting our new experiences in terms of our existing schemas

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accommodation

in developmental psychology, adapting our current understandings (schemas) to incorporate new information

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sensorimotor stage

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

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object permanence

the awareness that things continue to exist even when not perceived

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preoperational stage

in Piaget's theory, the stage (from about 2 to 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

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conservation

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

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egocentrism

in Piaget's theory, the preoperational child's difficulty taking another's point of view

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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

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concrete operational stage

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

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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

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scaffold

a framework that offers children temporary support as they develop higher levels of thinking

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autism spectrum disorder

a disorder that appears in childhood and is marked by significant deficiencies in communication and social interaction, and by rigidly fixated interests and repetitive behaviors

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stranger anxiety

the fear of strangers that infants commonly display, beginning by about 8 months of age

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attachment

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

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critical period

an optimal period early in the life of an organism when exposure to certain stimuli or experiences produces normal development

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imprinting

the process by which certain animals form strong attachments during early life

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strange situation

a procedure for studying child-caregiver attachment; a child is placed in an unfamiliar environment while their caregiver leaves and then returns, and the child's reactions are observed

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secure attachment

demonstrated by infants who comfortably explore environments in the presence of their caregiver, show only temporary distress when the caregiver leaves, and find comfort in the caregiver's return

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insecure attachment

demonstrated by infants who display either a clinging, anxious attachment or an avoidant attachment that resists closeness

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temperament

a person's characteristic emotional reactivity and intensity

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basic trust

according to Erik Erikson, a sense that the world is predictable and trustworthy; said to be formed during infancy by appropriate experiences with responsive caregivers

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self concept

all our thoughts and feelings about ourselves in answer to the question, "Who am I?"

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sex

in psychology, the biologically influenced characteristics by which people define male and female

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gender

the socially influenced characteristics by which people define boy, girl, man, and woman

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aggression

any physical or verbal behavior intended to harm someone physically or emotionally

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relational aggression

an act of aggression (physical or verbal) intended to harm a person's relationship or social standing

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role

a set of expectations (norms) about a social position, defining how those in the position ought to behave

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gender role

a set of expected behaviors, attitudes, and traits for males or for females

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gender identity

our sense of being male, female, or some combination of the two

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social learning theory

the theory that we learn social behavior by observing and imitating and by being rewarded or punished

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gender typing

the acquisition of a traditional masculine or feminine role

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androgyny

displaying both traditional masculine and feminine psychological characteristics

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transgender

an umbrella term describing people whose gender identity or expression differs from that associated with their birth-designated sex

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adolescence

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

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puberty

the period of sexual maturation, during which a person becomes capable of reproducing

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identity

our sense of self; according to Erikson, the adolescent's task is to solidify a sense of self by testing and integrating various roles

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social identity

the "we" aspect of our self-concept; the part of our answer to "Who am I?" that comes from our group memberships

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intimacy

in Erikson's theory, the ability to form close, loving relationships; a primary developmental task in young adulthood

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emerging adulthood

a period from about age 18 to the mid-twenties, when many in Western cultures are no longer adolescents but have not yet achieved full independence as adults

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X chromosome

the sex chromosome found in both males and females. Females typically have two; males typically have one

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Y chromosome

the sex chromosome typically found only in males. When paired with an X chromosome from the mother, it produces a male child

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testosterone

the most important male sex hormone

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primary sex characteristics

the body structures (ovaries, testes, and external genitalia) that make sexual reproduction possible

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secondary sex characteristics

nonreproductive sexual traits, such as female breasts and hips, male voice quality, and body hair

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spermarche

the first ejaculation

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menarche

the first menstrual period

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intersex

a condition present at birth due to combinations of male and female chromosomes, hormones, and anatomy; possessing biological sexual characteristics of both sexes

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AIDS

a life-threatening, sexually transmitted infection caused by the human immunodeficiency virus (HIV)

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sexual orientation

our enduring sexual attraction

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menopause

the time of natural cessation of menstruation; also refers to the biological changes a woman experiences as her ability to reproduce declines

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cross-sectional study

research that compares people of different ages at the same point in time

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longitudinal study

research that follows and retests the same people over time

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neurocognitive disorders

acquired (not lifelong) disorders marked by cognitive deficits; often related to Alzheimer's disease, brain injury or disease, or substance abuse; formerly called dementia

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Alzheimer's disease

a neurocognitive disorder marked by neural plaques, often with onset after age 80, and entailing a progressive decline in memory and other cognitive abilities

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social clock

the culturally preferred timing of social events such as marriage, parenthood, and retirement