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Lecture 8. Child Development. Developmental Psychology. Developmental psychology – a branch of psychology that studies physical, cognitive, and social change throughout the life span. How Do Psychologists Explain Development?.
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Lecture 8 Child Development
Developmental Psychology • Developmental psychology–a branch of psychology that studies physical, cognitive, and social change throughout the life span
How Do PsychologistsExplain Development? Development is a process of growth and change brought about by an interaction of heredity and the environment
The Nature-NurtureInteraction • Nature-nurture controversy–Long-standing debate over relative importance of nature (heredity) and nurture (environment) in their influence on behavior and mental processes
The Nature-NurtureInteraction • Twin studies–Developmental investigations in which twins, especially identical twins, are compared in the search for genetic and environmental effects
The Nature-NurtureInteraction • Adoption studies–Studies in which the adopted child’s characteristics are compared to those of the biological family and the adoptive family
Continuity view Performance Discontinuityview Age Gradual versus Abrupt Change Continuity viewvs.Discontinuity view
Gradual versus Abrupt Change • Psychologists who take the discontinuity view maintains that different behaviors occur in different __________________________, or stages Developmental stages–Periods of life initiated by significant ________________ or changes in physical or psychological functioning
What Are theDevelopmental Tasks of Infancy and Childhood? Infants and children face especially important developmental tasks in the areas of (1)language acquisition, (2)cognition, and (3)social relationships
How Children Acquire Language • Innateness theory of language–Children learn language mainly by following an inborn program for acquiring vocabulary and grammar • Language acquisition device (LAD)–Structure in the brain innately programmed with some of the fundamental rules of grammar
How Children Acquire Language • 6-8 weeks: Cooing stage • 7 months: Babbling stage • 12-18 months: • One-word stage • Two-word stage • Telegraphic speech (short, simple sentences)
How Children Acquire Language • Gradually, children develop other language skills • Social rules of conversation (how to join a conversation, how to take turns speaking, etc) • Abstract words (e.g. hope, truth) • Emotion words (happy, sad, angry)
Cognitive Development • Cognitive development–The process by which thinking changes over time
Cognitive Development Piaget’s System • Schemas–Mental structures orprograms that guide adeveloping child’s thoughts
Cognitive Development Assimilation–Mental process that ____________ new information to _________ it into existingschemes Accommodation –Mental process that________________ existingschemas so that newinformation is better understood
Piaget’s Stages of Cognitive Development Sensorimotor Preoperational Concrete Operational Formal Operational
Piaget’s Stages of Cognitive Development • Birth to about age 2 • Child relies heavily on innate motor responses to stimuli Sensorimotor Preoperational Concrete Operational • Mental representations • Object permanence Formal Operational
Sensorimotor Stage • Mental Representation • The ability to form internal images of objects and events • Object Permanence • the awareness that things continue to exist even when they are out of sight
Piaget’s Stages of Cognitive Development • About age 2 to age 6 or 7 • Representing things • with words and images • but lacking logical reasoning Sensorimotor Preoperational Concrete Operational • Egocentrism • Animalistic thinking • Centration Formal Operational
Preoperational Stage • Egocentrism • the inability of the preoperational child to ______________________________ • Animalistic thinking • the believe that inanimate objects have life and ________________________ • Centration • the inability to take into account more than one aspect of a situation at a time
Piaget’s Stages of Cognitive Development Sensorimotor • About age 7 to about age 11 • Thinking logically about concrete events; grasping concrete analogies and performing arithmetical operations Preoperational Concrete Operational • Conservation • Mental operations Formal Operational
Concrete Operational Stage • Conservation • the principle that properties such as mass, volume, and number remain the same despite changes in the forms of objects • Mental Operations • The ability to solve problems by manipulating images in one’s mind
Piaget’s Stages of Cognitive Development Sensorimotor Preoperational Concrete Operational • From about age 12 on • Abstract thought appears Formal Operational
Criticisms of Piaget’s Theory • In many areas, Piaget appears to have underestimated young children’s cognitive development • Undermined individual differences • Underestimated the influences of cultural factors on cognitive development