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| 117283100 | Age of viability | the age at which a baby can survive in the event of a premature birth | |
| 117283101 | Aggression | any behavior that is intended to hurt someone, either physically or verbally | |
| 117283102 | Altruism | selfless concern for the welfare of others that leads to sharing, cooperation, and helping behavior | |
| 117283103 | Animism | the belief that all things are living | |
| 117283104 | Centration | the tendency to focus on just one feature of a problem, neglecting other important aspects | |
| 117283105 | Cephalocaudal trend | the head-to-foot direction of motor development | |
| 117283106 | Cognitive Development | refers to the age related transitions in patterns of thinking, including reasoning, remembering, and problem solving | |
| 117283107 | Developmental Norms | the average at which individuals display various behaviors and abilities | |
| 117283108 | Embryonic Stage | 2 weeks → 2months of prenatal development | |
| 117283109 | Fetal Stage | 2 months → the birth of the child | |
| 117283110 | Gender | culturally constructed distinctions between femininity and masculinity | |
| 117283111 | Gender Roles | expectations about what is appropriate behavior for each sex | |
| 117283112 | Gender Differences | actual disparities between the sexes in typical behavior or average ability | |
| 117283113 | Gender Stereotypes | widely held beliefs about females' and males' abilities, personality traits, and social behavior | |
| 117283114 | Germinal Stage | the first phase of prenatal development, 1st 2 weeks after conception | |
| 117283115 | Maturation | development that reflects the gradual unfolding of one's genetic blueprint | |
| 117283116 | Proximodistal trend | the center outward direction of motor development | |
| 117283117 | Separation Anxiety | emotional distress seen in many infants when they are separated from people with whom they have formed an attachment | |
| 117283118 | Sex | biologically based categories of male and female | |
| 117283119 | Socialization | the acquisition of the norms and behaviors expected of people in a particular society | |
| 117283120 | Visual Cliff | a glass platform that extends over a several-foot dropoff. Used to pro prove that infants have an instinctive depth perception. | |
| 117283121 | Developmental psychology | Branch of psychology that studies physical, cognitive, and social change throughout the life span | |
| 117283122 | Zygote | Fertilized egg; it enters a 2-week period of rapid cell division and develops onto an embryo. | |
| 117283123 | Embryo | The developing human organism from about 2 weeks after fertilization through the second month. | |
| 117283124 | Fetus | The developing human organism from 9 weeks after conception to birth | |
| 117283125 | Teratogens | Agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm. | |
| 117283126 | Fetal alcohol syndrome (FAS) | Physical and cognitive abnormalties in children caused by a pregnant woman's heavy drinking. Severe case: noticeable facial misproportions | |
| 117283127 | Rooting reflex | A baby's tendency, when touched on the cheek, to open the mouth and search for the nipple. | |
| 117283128 | Habituation | Decreasing responsiveness with repeated simulation. As infants gain familiarity with repeated exposure to a visual stimulus their interest wanes and they look away sooner. | |
| 117283129 | Maturation | Biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience. | |
| 117283130 | Schema | A concept or framework that organizes and interprets information. | |
| 117283131 | Assimilation | interpreting one's new experience in terms of one's existing schemas. | |
| 117283132 | Accommodation | Adapting one's current understandings (schemas) to incorporate new information. | |
| 117283133 | cognition | All the mental activities associated with thinking, knowing, remembering, and communicating | |
| 117283134 | Sensorimotor stage | 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 | |
| 117283135 | Object permanence | The awareness that things continue to exist even when not perceived. | |
| 117283136 | Preoperational stage | In Piaget's theory the stage (fom 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. | |
| 117283137 | Conservation | The principle that properties such as mass, volume, and number remain the same despite changes in the forms of objects. | |
| 117283138 | Egocentrism | In Piaget's theory, the inability of the preoperational child to take another's point of view. | |
| 117283139 | Theory of mind | People's ideas about their own and others' mental states- about their feelings, percetpions, and thoughts and the behavior these might predict. | |
| 117283140 | Autism | A disorder that appears in childhood and is marked by deficient communication, social interaction, and understanding of others' states of mind. | |
| 117283141 | 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. | |
| 117283142 | 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. | |
| 117283143 | Stranger anxiety | The fear of strangers that infants commonly display, beginning by about 8 months of age. | |
| 117283144 | Attachment | An emotional tie with another person; shown in young children by their seeking closeness to the caregiver and showing distress on separation. | |
| 117283145 | Critical Period | An optimal period shortly after birth when an organism's exposure to certain stimuli of experiences produces proper development. | |
| 117283146 | Imprinting | The process by which certain animals form attachments during a critical period very easily in life. | |
| 117283147 | 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. | |
| 117283148 | Self-concept | A sense of one's identity and personal worth | |
| 117283149 | Adolescence | The transition period from childhood to adulthood, extending from puberty to independence. | |
| 117283150 | Puberty | The period of sexual maturation, during which a person becomes capable of reproducing | |
| 117283151 | Primary sex characteristics | The body structures (ovaries, testes, and external genitalia) that make sexual reproduction possible | |
| 117283152 | Secondary sex characteristics | Nonreproductive sexual characteristics, such as female breasts and hips, male voice quality, and body hair. | |
| 117283153 | Identity | One's sense of self; according to Erikson, the adolescent's task is to solidify a sense of self by testing and integrating various roles. | |
| 117283154 | Menarche | The first menstrual period. | |
| 117283155 | Intimacy | In Erikson's theory, the ability to form close, loving relationships; a primary developmental task in late adolescence and early adulthood. | |
| 117283156 | Menopause | The time of natural cessation of menstruation; also refers to the biological changes a woman experiences as her ability to reproduce declines. | |
| 117283157 | Alzheimer's disease | a progressive and irreversible brain disorder characterized by gradual deterioration of memory, resoning, language, and, finally, physical functioning. | |
| 117283158 | Cross-sectional study | a study in which people of different ages are compared with one another | |
| 117283159 | Longitudinal study | research in which the same people are restudied and retested over a long period. | |
| 117283160 | Crystallized intelligence | one's accumulated knowledge and verbal skills; tends to increase with age. | |
| 117283161 | Fluid intelligence | one's ability to reason speedily and abstractly; tends to decrease during late adulthood. | |
| 117283162 | Social clock | The culturally preferred timing of social events such as marriage, parenthood, and retirement. |
