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What are some of the main philosophical perspectives on human nature? |
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Definition
Original Sin, Innate Purity, Tabula Rosa Nature Vs. Nurture Activity Vs. Passivity Continuity Vs. Discontinuity Developmental Stage Universal Vs. Pluralistic |
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children are inherently selfish egoists who must be controlled by society |
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Jean-Jaques Rousseau’s theory that children are born with an intuitive sense of right and wrong |
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“Blank Slate” John Locke’s theory that children are not either good or bad. How they turn out is based on how they are raised. |
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Debate within developmental psychology over the relative importance of biological predispositions (nature) and environmental influences (nurture) as determinants of human development. |
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Debate among developmental theorists about whether children are active contributors to their own development or passive recipients of environmental influence. |
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Continuity Vs. Discontinuity |
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Definition
Debate among theorists about whether developmental changes are best characterized as gradual and quantitative or abrupt and qualitative. |
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A distinct phase within a larger sequence of development; a period characterized by a particular set of abilities, motives, behaviors, or emotions that occur together and form a coherent pattern. |
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Universal Vs. Pluralistic |
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Definition
Debate about whether developmental milestones are applied to all humans, or rather different from person to person. |
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Definition
Does it produce consistent results? |
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Does it measure what you want it to measure? |
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Data Collection - Structured interviews or questionnaires. Clinical Interview. |
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A method in which the scientist tests hypotheses by observing people as they engage in everyday activities in their natural habitats. (e.g. school,home, playground) |
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Tendency of participants to react to an observer’s presence by behaving in an unusual way. |
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A procedure in which an investigator records the frequencies with which individuals display particular behaviors during the brief time intervals that each participant is observed. |
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An observational method in which the investigator cues the behavior of interest and observes participants’ responses in a laboratory. |
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A research method in which the investigator gathers extensive information about the life of an individual and then tests developmental hypotheses by analyzing the vents of the person’s life history. |
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Method in which the researcher seeks to understand the unique values, traditions, and social processes of a culture or subculture by living with its members and making extensive observations and notes. |
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A type of research design that indicates the strength of associations among variables; though correlated variables are systematically related, these relationships are not necessarily causal. |
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A numerical index, ranging from -1.00 to +1.00, of the strength and direction of the relationship between two variables. |
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A research design in which the investigator introduces some change in the participant’s environment and then measures the effect of that change on the participant’s behavior. |
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The aspect of the environment that an experimenter modifies or manipulates in order to measure its impact on behavior. |
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The aspect of behavior that is measured in an experiment and assumed to be under the control of the independent variable. |
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Some factor other than the independent variable that, if not controlled by the experimenter, could explain any differences across treatment conditions in participants’ performance on the dependent variable. |
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Steps taken by an experimenter to ensure that all extraneous factors that could influence the dependent variable are roughly equivalent in each experimental condition; these precautions must be taken before an experimenter can be reasonable certain that observed changes in the dependent variable were caused by the manipulation of the independent variable. |
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A control technique in which participants are assigned to experimental conditions through an unbiased procedure so that the members of the groups are not systematically different from one another. |
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An experiment that takes place in a naturalistic setting such as the home, the school, or the playground. |
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State of affairs in which the findings of one’s research are an accurate representation of processes that occur in the natural environment. |
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Natural (or quasi) Experiment |
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A study in which the investigator measures the impact of some naturally occurring even that is assumed to affect people’s lives. |
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A research design in which subjects from different age groups are studied at the same point in time. |
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Age-related difference among cohorts that is attributable to cultural/historical differences in cohorts’ growing-up experiences rather than to true developmental change. |
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A research design in which one group of subjects is studied repeatedly over a period of months or years. |
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Nonrandom loss of participants during a study, resulting in a nonrepresentative sample. |
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A subgroup that differs in important ways from the larger group (or population) to which it belongs. |
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Cross-Generational Problem |
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Definition
The fact that long-term changes in the environment may limit conclusions of a longitudinal project to that generation of children who were growing up while the study was in progress. |
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A research design in which subjects from different age groups are studied repeatedly over a period of months or years. |
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A research design in which participants are studied intensively over a short period of time as developmental changes occur; attempts to specify how or why those changes occur. |
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Cross-Cultural Comparison |
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A study that compares the behavior and/or development of people from different cultural or subcultural backgrounds. |
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Freud’s theory that states that maturation of the sex instinct underlies stages of personality development, and that how parents manage children’s instinctual impulses will determine the traits children come to display. |
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An inborn biological force that motivates a particular response or class of responses. |
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Freud’s name for the instincts such as respiration, hunger, and sex that help the individual (and the species) to survive. (The life instinct) |
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Freud’s name for inborn, self-destructive instincts that were said to characterize all human beings. |
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Freud’s term for feelings, experiences, and conflicts that influence a person’s thinking and behavior, but lie outside the person’s awareness. |
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A type of motivated forgetting in which anxiety-provoking thoughts and conflicts are forced out of conscious awareness. |
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Psychoanalytic term for the inborn component of the personality that is driven by the instincts. |
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Psychoanalytic term for the rational component of the personality. |
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Psychoanalytic term for the component of the personality that consists of one’s internalized moral standards. |
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(Birth - 1 Year) - The sex instinct centers on the mouth, as infants derive pleasure from such oral activities as sucking, chewing, and biting. Feeding activities are particularly important. For example, an infant weaned too early or too abruptly may later crave close contact and become over-dependent on a spouse. |
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(1-3 Years) - Voluntary urination and defication become the primary methods of gratifying the sex instinct. Toilet training produces major conflicts between children and parents. The emotional climate parents create can have lasting effects. For example, children punished for toiling “accidents” may become inhibited, messy, or wasteful. |
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(3-6 Years) - Pleasure is now derived from stimulating the genitals. Children develop an incestuous desire for the opposite-sex parent (called the Oedipus complex for boys, or the Electra Complex for girls). Anxiety stemming from this conflict causes children to internalize the sex-role characteristics and moral standards of their same-sex parent rival. |
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(6-11 Years) - Traumas of the phallic stage cause sexual conflicts to be repressed and sexual urges to be re-channeled into school work and vigorous play. The ego and superego continue to develop as the child gains mor problem-solving abilities at school and internalizes societal values. |
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(Age 12 and onward) - Puberty triggers a reawakening of sexual urges. Adolescents must now learn how to express these urges in socially acceptable ways. If development has been healthy, the mature sex instinct is satisfied by marriage and child rearing. |
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Freud’s term for the conflict that 3-6 year old boys experience when they development an incestuous desire for their mothers and, at the same time, a jealous and hostile rivalry with their fathers. |
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Female version of the Oedipus Complex, in which a 3 to 6 year old girl was believed to envy her father for possessing a penis and to seek him as a sex object in the hope of sharing the organ that she lacks. |
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Freud’s term for the child’s tendency to emulate another person, usually the same-sex parent. |
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Arrested development at a particular psychosexual stage, often as a means of coping with existing conflicts and preventing movement to the next stage, where stress may be even greater. |
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Two Main Differences between Freud and Erikson |
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Definition
Erikson believed children were active participants in their development. Much less emphasis on the sexual drive of development and more of a Cultural one. |
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Definition
Erikison’s revision of Freud’s theory that emphasizes sociocultural (rather than sexual) determinants of development and posits a series of eight psychosocial conflicts that people must resolve successfully to display healthy psychological adjustment. |
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Term
Erikson's - Basic trust versus mistrust |
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Definition
Infants must learn to trust others to care for their basic needs. If caregivers are rejecting or inconsistent in their care, the infant may view the world as a dangerous place filled with untrustworthy or unreliable people. The mother or primary caregiver, is the key social agent
Birth to 1 year
Corresponding Psychosexual Stage: Oral |
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Erikson's - Autonomy versus shame and doubt |
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Definition
Children must learn to be “autonomous” - to feed and dress themselves, to look after their own hygiene, and so on. Failure to achieve this independence may force the child to doubt his or her own abilities and feel shameful. Parents are the key social agents.
1-3 years
Corresponding Psychosexual Stage: Anal |
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Erikson's - Initiative versus Guilt |
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Definition
Children attempt to act grown up and will try to accept responsibilities that are beyond their capacity to handle. They sometimes undertake goals or activities that conflict with those of parents and other family members, and these conflicts may make them feel guilty. Successful resolution of this crisis requires a balance: The child must retain a sense of initiative and yet learn not to impinge on the rights, privileges, or goals of others. The family is the key social agent
3-6 years
Corresponding Psychosexual Stage: Phallic |
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Erikson's - Industry versus Inferiority |
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Definition
Children must master important social and academic skills. This is a period when the child compares himself or herself with peers. If sufficiently industrious, children will acquire the social and academic skills to feel self-assured. Failure to acquire these important attributes leads to feelings of inferiority. Significant social agents are teachers and peers.
6-12 years
Corresponding Psychosexual Stage: Latency |
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Erikson's - Identity versus role confusion |
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Definition
This is the crossroad between childhood and maturity. The adolescent grapples with the question, “Who am I?” Adolescents must establish basic social and occupational identities, or they will remain confused about the roles they should play as adults. The key social agent is the society of peers.
12-20 years
Corresponding Psychosexual Stage: Early Genital |
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Erikson's - Intimacy versus Isolation |
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Definition
The primary task at this stage is to form strong friendships and to achieve a sense of love and companionship (or a shared identity) with another person. Feelings of loneliness or isolation are likely to result from an inability to form friendships or an intimate relationship. key social agents are lovers, spouses, and close friends (of both sexes.)
20-40 years (young adulthood)
Corresponding Psychosexual Stage: Genital |
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Erikson's - Generativity versus Stagnation |
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Definition
At this stage, adults face the tasks of becoming productive in their work and raising their families or otherwise looking after the needs of young people. These standards of “generativity” are defined by one’s culture. Those who are unable or unwilling to assume these responsibilities will become stagnant and/or self-centered. Significant social agents are the spouse, children, and cultural norms.
40-65 years (middle adulthood)
Corresponding Psychosexual Stage: Genital |
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Erikson's - Ego integrity versus Despair |
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Definition
The older adult will look back at life, viewing it as either a meaningful, productive, and happy experience or a major disappointment full of unfulfilled promises and unrealized goals. One’s life experiences, particularly social experiences, will determine the outcome of this final life crisis.
65+ Old Age
Corresponding Psychosexual Stage: Genital |
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Definition
A school of thinking in psychology that holds that conclusions about human development should be based on controlled observations of overt behavior rather than speculation about unconscious motives or other unobservable phenomena; the philosophical underpinning for social-learning theories. |
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Definition
Well-learned associations between stimuli and responses that represent the stable aspects of one’s personality. |
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Definition
Best known for the Albert and the Rabbit studies. Behaviorist... argued that learning isn’t in steps, but on a continuum. |
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Definition
Father of Operant-Learning Theory (Radical Behaviorism) |
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A form of learning in which voluntary acts (or operants) become either more or less probably, depending on the consequences they produce. |
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Any consequence of an act that increases the probability that the act will reoccur. |
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Definition
Any consequence of an act that suppresses that act and/or decreases the probability that it will reoccur. |
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Definition
Agreed with skinner about operant-learning, but felt that he didn’t take the theory far enough. Bandura believed development is attributed to Observational - learning. He includes a cognitive aspect. |
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Definition
In Bandura’s theory, a verbal encoding of modeled behavior that the observer stores in memory. |
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Term
Environmental Determinism |
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Definition
The notion that children are passive creatures who are molded by their environment. |
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Definition
The notion that the flow of influence between children and their environments is a two-way street; the environment may affect the child, but the child’s behavior will also influence the environment. |
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Definition
Learning that results form observing the behaviors of others. |
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The images and verbal labels that observers generate in order to retain the important aspects of a model’s behavior. |
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Definition
reproduction of a modeled activity that has been witnessed at some point in the past. |
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Age-related changes that occur in mental activities such as attending, perceiving, learning, thinking, and remembering. |
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Definition
An organized pattern of thought or action that a child constructs to make sense of some aspect of his or her experience; Piaget sometimes uses the term cognitive structures as a synonym of schemes. |
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Definition
Organized patterns of behavior that are used to represent and respond to objects and experiences. |
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Internal mental symbols (such as images or verbal codes) that one uses to represent aspects of experience. |
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Definition
Piaget’s term for schemes that utilize cognitive operations, or mental “actions of the head,” which enable one to transform objects of thought and to reason logically. |
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Definition
One who gains knowledge by acting or otherwise operating on objects or events to discover their properties. |
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Definition
An inborn tendency to combine and integrate available schemes into coherent systems or bodies of knowledge. |
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Definition
Inborn tendency to adjust to the demands of the environment. |
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Definition
Piaget’s term for the process by which children interpret new experiences by incorporating them into their existing schemes. |
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Definition
Imbalances or contradictions between one’s thought processes and environmental events; by contrast, equilibrium refers to a balanced, harmonious relationship between one’s cognitive structures and the environment. |
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Definition
Piaget’s term for the process by which children modify their existing schemes in order to incorporate or adapt to new experiences. |
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Term
What are Piaget’s Four Stages of Cognitive Development? |
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Definition
Sensoimotor Stage - Birth to 2 years. Preoperational Stage - 2-7 years. Concrete-operational Stage - 7-11 or 12 years. Formal-operational Stage - 11 or 12 years and beyond. |
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Invariant Developmental Sequence |
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Definition
A series of developments that occur in one particular order because each development in the sequence is a prerequisite for the next. |
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Definition
Piaget’s first stage of cognitive development, when infants are relying on behavioral schemes to adapt to the environment. |
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Term
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Definition
A newborn infant from birth to approximately one month of age. |
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Term
Primary Circular Reaction |
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Definition
A pleasurable response, centered on the infant’s own body, that is discovered by chance and performed over and over. (cooing, sucking thumb, 1-4 months) |
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Term
Secondary Circular Reaction |
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Definition
A pleasurable response, centered on an object external to the self, that is discovered by chance and performed over and over. (squeaking a ducky, shaking a rattle, 4-8 months & between 8-12 months are able to coordinate 2 or more actions to achieve simple objects) |
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Term
Tertiary Circular Reaction |
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Definition
An exploratory scheme in which infants devise new methods of acting on objects to reproduce interesting results. (stomping on the rubber ducky, dropping things on the floor, 12-18 months.) |
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Definition
The ability to solve simple problems on a mental, or symbolic level without having to rely on trial-and-error experimentation (18-24 months) |
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Definition
The realization that objects continue to exist when they are no longer visible or detectable through the other senses. |
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Object Permanence Age Based |
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Definition
4-8 months - infants will only uncover items that are partially visible. 8-12 months - When the object is hidden, they will look to where they first saw the object. 12-18 months - When the object is hidden they will look to where they saw the object last. 18-24 months - they are able to inductively figure out where the object must be. |
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Definition
Piaget’s second stage of cognitive development when children are thinking at a symbolic level but are not yet using cognitive operations. |
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Definition
An internal mental activity that one performs on objects of thought. |
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Definition
The ability to use symbols (for example, images and words) to represent objects and experiences. |
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Definition
The tendency to view the world from one’s own perspective while failing to recognize that others may have different points of view. |
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Definition
Piaget’s term for reasoning that is dominated by appearances (or perceptual characteristics of objects and events) rather than by rational thought processes. |
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Centered Thinking (centration) |
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Definition
The tendency to focus on only one aspect of a problem when two or more aspects are relevant. |
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Definition
The recognition that the properties of an object or substance do not change when its appearance is altered in some superficial way. |
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Definition
The ability to reverse, or negate, an action by mentally performing the opposite action. |
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Definition
the ability to consider more than one aspect of a problem at a time (Also called Decentration) |
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Concrete-Operational Stage |
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Definition
Piaget’s third stage of cognitive development when children are acquiring cognitive operations and thinking more logically about tangible objects and experiences. |
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Definition
A cognitive operation that allows one to order a set of stimuli along a quantifiable dimension such as height or weight. |
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Definition
The ability to infer relations among elements in a serial order (for example if A > B, and B > C, then A > C) |
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Definition
Piaget’s fourth and final stage of cognitive development when the individual begins to think more rationally and systematically about abstract concepts and hypothetical events. |
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Term
Hypothetico-Deductive Reasoning |
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Definition
A style of problem solving in which all possible solutions to a problem are generated and then systematically evaluated to determine the correct answers. |
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Definition
(Elkind) Allegedly a form of adolescent egocentrism that involves confusing ones own thoughts with those of a hypothesized audience and concluding that others share your preoccupations |
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Definition
(Elkind) Allegedly a form of adolescent egocentrism in which the individual thinks that he and his thoughts and feelings are special or unique. |
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Definition
The thinking that people display about the thoughts, feelings, motives, and behaviors of themselves and other people. |
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Definition
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Definition
The study of the bioevolutionary bases of behavior and development. |
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Definition
An evolutionary process, proposed by Charles Darwin, stating that individuals with characteristics that promote adaptation to the environment will survive, reproduce, and pass these adaptive characteristics to offspring; those lacking these adaptive characteristics will eventually die out. |
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Definition
Period of time that is optimal for the development of a particular capacities, or behaviors, and in which the individual is particularly sensitive to environmental influences that would foster those attributes. |
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Definition
Period of time that is optimal for the development of a particular capacities, or behaviors, and in which the individual is particularly sensitive to environmental influences that would foster those attributes. |
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Definition
The ability to experience the same emotions that someone else is experiencing. |
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Definition
The scientific study of how genotype interacts with environment to determine behavioral attributes such as intelligence, personality, and mental health |
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Definition
The genetic endowment that an individual inherits |
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Definition
The ways in which a person’s genotype is expressed in observable or measurable characteristics |
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Definition
The amount of variability in a trait that is attributable to hereditary factors. |
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Term
Selective Breeding Experiment |
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Definition
A method of studying genetic influences by determining whether traits can be bred in animals through selective mating. |
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Definition
The extent to which two individuals have genes in common. |
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Definition
Study in which sets of twins that differ in zygosity (kinship) are compared to determine the heritability of an attribute. |
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Definition
Study in which adoptees are compared with their biological relatives and their adoptive relatives to estimate the heritability of an attribute. |
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Term
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Definition
the percentage of cases in which a particular attribute is present for one member of a twin pair if it is present for the other. |
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Term
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Definition
A numerical estimate, ranging from .00 to +1.00, of the amount of variation in an attribute that is due to hereditary factors. |
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Term
Nonshared Environmental Influence |
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Definition
An environmental influence that people living together do not share and that should make these individuals different from one another. |
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Term
Shared Environmental Influence |
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Definition
An environmental influence that people living together share and that should make these individuals similar to one another. |
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Term
Examples of Biological Influences on Heritability |
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Definition
High concordance rates of introversion/extroversion, empathic concern, and schizophrenia. |
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Term
Passive Genotype/ Environment Correlations |
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Definition
The notion that the rearing environments that biological parents provide are influenced by the parents’ own genes, and hence are correlated with the child’s own genotype. |
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Term
Evocative Genotype/ Environment Correlations |
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Definition
The notion that our heritable attributes affect others’ behavior toward us and thus influence the social environment in which development takes place. |
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Term
Active Genotype/ Environment Correlations |
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Definition
The notion that our genotypes affect the types of environments that we prefer and seek out. |
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Term
Ecological Systems Theory |
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Definition
Bronfenbrenner’s model emphasizing that the developing person is embedded in a series of environmental systems that interact with one another and with the person to influence development (sometimes called Bioecological theory). |
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Definition
founded the Ecological Systems Theory |
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Term
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Definition
The immediate settings (including role relationships and activities) that the person actually encounters; the innermost of Bronfenbrenner’s environmental layers, or contexts. |
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Term
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Definition
The interconnections among an individual’s immediate settings, or microsystems; the second of Bronfenbrenner’s environmental layers, or contexts. |
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Definition
Social systems that children and adolescents do not directly experience but that may nonetheless influence their development; the third of Bronfenbrenner’s environmental layers, or contexts. |
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Term
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Definition
The larger cultural or subcultural context in which development occurs; Bronfenbrenner’s outermost environmental layer, or context. |
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Term
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Definition
In ecological systems theory, changes in the individual or the environment that occur over time and influence the direction development takes. |
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Term
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Definition
Vygotsky’s perspective on development, in which children acquire their culture’s values, beliefs, and problem-solving strategies through collaborative dialogues with more knowledgeable members of society. |
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Term
Tools of intellectual Adaptation |
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Definition
Vygotsky’s term for methods of thinking and problem-solving strategies that children internalize from their interactions with more competent members of society. |
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Term
Collaborative (guided) learning |
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Definition
Process of learning or acquiring new skills that occurs as novices participate in activities under the guidance of a more skillful tutor. |
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Term
Zone of proximal development |
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Definition
Vygotsky’s term for the range of tasks that are too complex to be mastered alone but can be accomplished with guidance and encouragement from a more skillful partner. |
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Term
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Definition
Process by which an expert, when instructing a novice, responds contingently to the novice’s behavior in a learning situation, so that the novice gradually increases his or her understanding of a problem. |
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Term
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Definition
Vygotsky’s term for the subset of a child’s verbal utterances that serve a self-communicative function and guide the child’s activities. |
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Term
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Definition
Internalized private speech; covert verbal thought. |
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Term
Social Information-Processing (or attribution) Theory |
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Definition
Social-cognitive theory stating that the explanations we construct for social experiences largely determine how we react to those experiences. |
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Term
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Definition
Conclusions drawn about the underlying causes of our own or another person’s behavior. |
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Term
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Definition
A dispositional characteristic that is stable over time and across situations. |
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Term
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Definition
Attributional heuristic implying that actions that a personal consistently performs are likely to be internally caused (reflecting a dispositional characteristic) |
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Term
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Definition
View of children as passive entities whose developmental paths are primarily determined by external (environmental) influences. |
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Term
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Definition
View of children as active entities whose developmental paths are primarily determined by forces from within themselves. |
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Term
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Definition
View of children as active entities whose developmental paths represent a continuous, dynamic interplay between internal forces (nature) and external influences (nurture). |
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Term
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Definition
A unified view of the developmental process that emphasizes the interrelationships among the physical/biological, mental, social, and emotional aspects of human development. |
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Term
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Those who borrow from many theories in their attempts to predict and explain human development. |
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Heart begins to beat 5 wks Eyes grow corneas and retina |
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Embryo formation. All organs present at birth are present |
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sensitive to teratogens viruses chemicals drugs radiation highest period of miscarriage |
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Rapid growth and development Toenails, fingernails, scalp hair, eyebrows, eyelashes appear Increased and more refined motor activity Sweat glands begin to function |
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When survival outside the uterus is possible Usually viable between 24-28 weeks after conception Probability of survival related to child’s birth weight. Respiratory system is key. |
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Younger mothers (Under 18) |
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Increased obstetrical complications Increased risk of stillborn fetus or fetus who fails to survive |
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Older first-time mothers (Over 35) |
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Increased risk of illness during pregnancy Longer and more difficult labors Risk of smaller, premature, stillborn |
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Risks associated with: Extremely anxious High dependence on others Ambivalent or negative attitudes about pregnancy |
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Risks - Insufficient weight gain (< 20 lbs) |
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Premautre Small for age babies Growth retardation in utero |
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Risks - Severe malnutrition |
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Risk of congenital defects Risk of prolonged labor Risk of stillbirth Risk of infant mortality during the first year Last three months of pregnancy key |
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Scientific study of birth defects caused by genetic and prenatal influences or by complications with the birth process Complicated by many factors |
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Rubella - (infected in first month 35% chance of deformation - 3rd month it lowers to 15%) Syphilis Influenza Mumps Toxemia |
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Maternal Drug Use: Alcohol |
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Moderate drinking 1-2 drinks a day or occasional heavy drinking of 5 or more drinks Risk of miscarriage, prematurity, low birth weight, and complications during labor/delivery Heavy drinking (5 or more per day) serious obstetrical complications possible Fetal Alcohol Syndrome |
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Linked to 115,000 miscarriages and 5,600 infant deaths/year Increases risk of many pregnancy complications Low birth weight 1/3 of underweight births associated with maternal sicarette use Prematurity Up to 14% of preterm births associated with maternal cigarette use Higher incidence of apnea, SIDS Delivery and Birth Complications |
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Performed at 1 minute and 5 minutes after birth Score from 0-2 on each of: heart rate respiratory effort muscle tone color reflex irritability Apgar of 7+ = okay Apgar of < 4 = need immediate medical attention |
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Deprivation of oxygen during or immediately following birth Major cause of cerebral palsy |
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Abnormal positioning of the fetus 1/10 deliveries Cesarean section performed to avoid complications |
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Brackbill et al., 1985 review study - study where they looked at birth medications (oral) deficits in the child |
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Total gestation 37-42 weeks Birth weight: 7 1/2 lbs (average) - 7-8% weigh less than 5 1/2 lbs Premie babies a lot of times will weigh age appropriate but are smaller than the general baby weight Birth length: 48-53 cm |
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Growth rate slow for gestation time Greater risk for serious complications Causes: Maternal age (teen mother) Malnourishment Heavy smoking Drinking Drug use Multiple births |
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Short term consequences of Low Birth Rate: |
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May not survive Time spent in isolettes interrupts typical parental bonding and exposure to human touch May be unpleasant babies, aloof, fussy May show motor and cognitive delays More likely to be abused than full-term infants |
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Long-Term Consequences low Birth Weight |
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Prognosis depends on the environment stable, supportive homes - develop attachments, little evidence of IQ deficits/ learning difficulties Unstable, low SES homes - likely to remain small in stature, more emotional problems, long-term deficits in intellectual growth and academic achievement |
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Babinski Swimming Stepping Withdrawal Clasping/Grasping |
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Biological Development - Height |
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Infancy and Toddler-hood 2X birth weight by 4 to 6 months 3X birth weight by 12 months Half of eventual adult height by age 2 Age 2 to puberty: 2 to 3 inches a year 6 to 7 lbs a year Puberty two-three years of accelerated growth 2 to 4 inches a year 10 to 15 lbs a year |
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Birth to age two: brain grows from 25% to 75% of eventual adult weight |
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Development - Plasticity of the Brain |
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1/2 of early neural connections die early in life Experience determines what will stay |
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Infant chimps raised in the dark for the first 6 months of life Atrophy of retina, optic nerve Reversible before 7 months of non-stimulation After 7 months, irreversible (-->> permanent blindness) |
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Proceeds in cephalocaudal and proximodistal directions (down and out) Infants follow same locomotor milestones |
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Orphans in Iran Two years spent lying on backs in cribs Age 2 None could walk Less than half could sit unaided Age 3 Less than 15% could walk well alone |
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White and Jamaican children living in England Jamaican children developed motor skills earlier Traditional Jamaican grooming for walking |
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Tools for verbal proficiency (receptive is learned before expressive) |
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English has 45 Basic units of sound Combined to produce words |
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Meanings expressed in words and sentences Certain combinations of sounds have meaning. |
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Rules for combining words to produce desired meanings Ally bit sam. Sam bit Ally. Ally Sam Bit. |
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How language is used for effective communications Tested by the social reasoning skills. |
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Prelinguistic (birth - 1 year) |
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Crying cooing, babbling By 1 year: People take turns vocalizing Tone important Speech has rhythm Joint attention (autism) both parties looking at the same thing and commenting Autistic children cannot do this. Mother directed talk - Baby talk |
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Holophrastic phase (1 year - 18-24 months) |
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Single word as holophrase Naming explosion |
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Telegraphic phase (18-24 months) |
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Combining words into two or three word phrases Phrases only contain critical content words Telegram speech (nouns and verbs) At age 18 they have about 50 words they can understand. The more speech a caregiver directs to the child, the more they can understand |
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Preschool period (2 1/2 to 5 years) |
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Language resembles adult language Grammatical morphemes “s” for plurality “ed” for past tense Basic transformational rules Semantic and relational contrasts big <-> little before <-> after Recognition of uninformative messages Ask for clarification |
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Middle childhood and adolescence (6-14 years) |
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Period of linguistic refinement Rapid vocabulary expansion Subtle exceptions to grammatical rules Metalinguistic awareness |
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