Lecture 7 Development.docx - Lecture 7 Development Overview...

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9/21/16 Lecture 7: Development Overview Prenatal development Childhood adolescence Motor development Cognitive develop Piaget Vygotsky Social Development Adulthood Issues in Developmental Psychology Nature AND nurture, there is always an interaction between genes and environment Change and Stability, In what ways do we change as we age Continuity and States, Is development gradual Conception: In the beginning Sperm and egg unite to bring genetic material together- zygote Prenatal Development Zygote state: first 10-14 days After nuclei of egg and sperm fuse , cell dives into 2, 4, 6, 8 Cells begin to differentiate into specialized locations Implantation: The Embryo, 2-8 weeks Begins w/ multicellular cluster that impacts in the uterine wall Differentiated cells decline into organs and bones The Fetus At 9 weeks, hands and face developed, embryo now called fetus, attached to placenta 4 months- many more features develop 6 months- if need be can survive outside of womb (with current technology) Nature and Nurture Teratogens (“monster makers”) substances such as viruses and chemicals that can damage developing embryo/fetus Fetal Alcohol Syndrome (FAS) refers to cognitive, behavioral, and body/brain structure abnormalities caused by exposure to alcohol in fetal stage, especially during first 3 months, example of nature and nurture Unusual facial size, shape, features Hyperactivity/learning problems Emotional control problems Fetuses in womb can respond to sounds Can learn to recognize sounds that they previously hear only in womb Can habituate to annoying sounds, becoming less agitated w/ repeated exposure, ex. if used to being in loud factory, won’t cry to sound of vacuum
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9/21/16 Maturation In developmental psych- refers to biologically driven growth and development enabling orderly changes in behavior, predictably sequential Ex: Infants learn in sequence, first lift head, then sit up, them crawl, then walk Experience (nurture) can adjust timing, but maturation (nature) sets the sequence Back to sleep- babies sleeping on back is safer, later realized babies starting to crawl at 8 months instead of 6 months, not able to develop muscles bc not on tummy long enough; now there is “tummy time” when babies are awake Maturation in infancy and early childhood affects brain development and motor skills Brain Development In the womb, the number of neurons grows by about 750k new cells/ min in middle trimester 3-6 months Starting at birth, not making new neurons, just growing connect between them,
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