Lecture10--Development+I+for+students+3+slides

Lecture10--Development+I+for+students+3+slides - 10/31/10...

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10/31/10 1 PRENATAL, INFANT, AND COGNITIVE DEVELOPMENT Developmental Psychology The study of changes in physiology, cognition, and social behavior over the lifespan. Why do we study development? Group Change—everyone does it! Individual Differences—what makes some people one way and other people other ways? Developmental Disabilities—what about when development goes wrong? Prenatal Development
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10/31/10 2 Influences on Prenatal Development Genetic abnormalities Most result in miscarriage Some can still develop to term: Trisomy 21 Trisomy 18 Extra or Missing Sex Chromosomes Influences on Prenatal Development Placenta: Transfers nutrients and oxygen to the zygote/ fetus Screens some substances but not others Teratogens What is a teratogen? Agents that can impair physical and cognitive development in the womb Drugs Alcohol Viruses Chemicals Damage depends on… When! How much!
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10/31/10 3 Teratogens Teratogens Thalidomide Prescribed for morning sickness (primarily during weeks 6-12) from 1957-1961 One of the biggest medical tragedies of modern times The effects of thalidomide Limb development Eye and ear development Changed the regulations for testing drugs and pesticides Teratogens Alcohol There is no “safe” amount Depresses the activity of the central nervous system Children of drinking mothers were more likely to be heavy drinkers as teens Fetal Alcohol Syndrome 1 in 800 births Intellectual disabilities Malformed facial features
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10/31/10 4 Stress in Pregnancy High levels of stress = high levels of stress hormones Premature birth Low birth weight Cognitive impairments High stress is especially detrimental in the first six months of pregnancy. What can newborns do?
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Lecture10--Development+I+for+students+3+slides - 10/31/10...

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