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The Human Puzzle Chapter 7 Study Material

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Term
Definition
Accommodation   In Piaget’s theory, the modification of an activity or an ability that a child has already learned, to conform to environmental demands.  
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Active Vocabulary   Words actually used in speech.  
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Alleles   Each of two corresponding forms of a gene, one being inherited from each parent.  
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Animistic Thinking   Attributing lifelike qualities to inanimate objects.  
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Artificial Insemination   The process of introducing sperm in a female’s reproductive tract without sexual intercourse.  
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Assimilation   In Piaget’s theory, the act of incorporating objects or aspects of objects into previously learned activities. The exercising of previously learned responses.  
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Chromosomes   In the nucleus of all cells,the microscopic bodies that contain genes,which are the carriers of heredity.  
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Conception   The beginning of life, or fertilization.  
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Conservation   A Piagetian term implying that certain quantitative attributes of objects remain unchanged unless something is added to or taken away from them.  
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Daydreaming   Engaging in waking dreams or reveries that are mainly under the dreamer’s control.  
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Deoxyribonucleic Acid (DNA)   A substance assumed to be the basis of all life, consisting of four chemical bases arranged in a mind-boggling number of combinations in the form of a double spiral (helix).  
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Difficult Infants   A type of temperament characterized by irregularity with respect to things like eating, sleeping, and toilet functions; withdrawal from unfamiliar situations; slow adaptation to change; and intense as well as negative moods.  
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Dizygotic Twins   Twins that result from two separate eggs and that are therefore fraternal (nonidentical).  
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Dominant Gene   A gene that takes precedence over other genes in determining a related trait.  
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Dyadic Interactions   Interactions involving two individuals.  
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Easy Infants   A temperament type marked by high regularity in behaviors such as eating and sleeping; high interest in novel situations; high adaptability to change; and a preponderance of positive moods.  
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Egocentrism   Based on Latin words for self (ego) and center—hence a self-centered behavior, attitude, or personality characteristic. Egocentric thought is characterized by an inability to assume an objective point of view.  
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Embryo   The developing fetus, between 2 and 8 weeks after conception.  
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Fallopian Tube   One of two tubes that link the ovaries and the uterus, where conception ordinarily occurs.  
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Fast Mapping   The learning of a concept, like a word, in a single trial.  
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Genes   The carriers of heredity.  
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Genotype   Genetic makeup. The assortment of genes that compose the individuals genetic code  
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Gonads   Hormone-producing sex glands. Testes in the male; ovaries in the female.  
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Holophrase   A word the child uses to convey as much meaning as an adult would convey with a much longer phrase.  
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Identity    In Erikson’s theory, a term closely related to self. To achieve identity is to arrive at a clear notion of who one is.  
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Imaginary Audience    An egocentric tendency to assume that we are the focus of other people’s attention, that everyone is aware of and interested in our dress and behavior.  
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Imaginary Playmate   My imaginary playmate is my best friend and goes everywhere with me and likes a lot of the same things I do and gets upset if I don’t say hello and . . .  
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In Vitro Fertilization   The fertilization of egg cells outside the womb—literally in glass (in vitro).  
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Infancy   The first 2 years of life.  
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Intuitive Thinking   Thought based on immediate comprehension rather than logical processes.  
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Magical Thinking   Thinking, often characteristic of preschoolers and young children, that is not entirely logical or scientifically valid, but rather inventive and surprising and sometimes bizarre— hence magical.  
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Menarche   A girl’s first menstrual period.  
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Monozygotic Twins   Twins resulting fromthe division of a single fertilized egg—hence identical twins.  
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Nature-Nurture Controversy   The debate over whether heredity or environment is most influential in determining develop-mental outcomes.  
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Object Concept   Piaget’s expression fora child’s understanding that the world is composed of objects that continue to exist when they aren’t being sensed.  
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Operation   Piaget’s term for a thought process characterized by certain rules of logic.  
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Ovum   The sex cell produced by a mature female, consisting of 23 chromosomes rather than 23 pairs of chromosomes.  
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Passive Vocabulary   Words that are understood but that may not actually be used in speech.  
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Personal Fable   An expression of adolescent egocentrism marked by the elaboration of fantasies, the hero of which is the adolescent.  
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Phenotype   A person’s manifested characteristics, resulting from the interaction of genotype with the environment. (See genotype.)  
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Placenta   A flat, thick membrane attached to the inside of the uterus during pregnancy, connected to the fetus by means of the umbilical cord.  
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Play   Activities with no goal other than the enjoyment derived from them.  
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Protowords   The infant’s first word-like sounds used to signify a specific person or object.  
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Psychosocial Development   Erikson’s phrase to describe human development as a sequence of stages involving the resolution of crises that are mainly social.  
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Puberty   Sexual maturity following pubescence.  
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Pubescence    Changes of adolescence leading to sexual maturity.  
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Recessive Gene   A gene whose characteristics are not manifested in offspring when paired with the corresponding dominant gene.  
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Schema (Also Scheme or Schemata)    Label used by Piaget to describe a unit in cognitive structure. A scheme is, in one sense, an activity together with its structural connotations. In another sense, a scheme may be thought of as an idea or a concept. It usually labels a specific activity: the looking scheme, the grasping scheme, the sucking scheme.  
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Sensorimotor    First stage of Piaget’s stages of cognitive development. It describes how infants understand their world. They understand their world mainly in terms of the activities they perform and the sensations that result.  
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Sex Chromosome   A chromosome in sperm and egg cells responsible for determining the sex of the offspring.  
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Sex-Linked Defects   Defects due to the action of a gene located on the sex chromosome, most often on the X chromosome, and most often manifested in males.  
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Slow-To-Warm-Up Infants   An infant temperament type marked by low activity level; high initial withdrawal from the unfamiliar; slow adaptation to change; and a somewhat negative mood, with moderate or low intensity of reaction.  
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Socialization   The process of learning behaviors that are appropriate and inappropriate for a given culture.  
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Sperm Cell   The sex cell produced by a mature male, consisting of 23 chromosomesrather than 23 pairs of chromosomes.  
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Temperament   A characteristic way of thinking or behaving.  
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Transitive Inference   A type of logical thinking in which an inference is made about the relationship of two objects or events by comparing them with a third rather than by comparing them directly.  
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Umbilical Cord   A long, thick cord attached to the placenta at one end and to what will be the child’s navel at the other.  
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Uterus   The womb, where the infant develops prenatally.  
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Zygote   A fertilized egg cell (ovum), formed from the union of sperm and ovum, consisting of 46 chromosomes.  
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