18 - Chapter8:Studyguide 18:32 The Biological Viewpoint The...

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Chapter 8: Study guide 18:32 The Biological Viewpoint The Behavioral Genetics and Psychophysiological Perspectives on Personality Summary of pages 352 to 358 Applications of the Biological Viewpoint Application of the Behavioral Genetics Perspective Behavioral genetics have enabled the ability to detect and treat disease and genetic defects in prenatal development. Three prenatal approaches: 1. Genetic counseling 2. Prenatal diagnosis 3. Gene therapy Genetic Counseling: Assessing Potential Problems Prior to a Pregnancy Genetic counseling : Advice given to people concerning their likelihood of having offspring with genetic defects and diseases. In order for genetic counselors to assess potential problems they need the following: Couple’s genetic family history o Diseases
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o Birth defects o Mental disorders o Causes of death of parents, siblings, grandparents, and other relatives Other evaluations occur through the use of sophisticated lab techniques, which include: Blood Skin tissue Urine Fingerprints Genetic counselors then compute genetic risks and provide information to potential parents to aid in decision- making regarding the calculated genetic risks. Genetics counselors also serve as an authoritative source to information regarding genetic diseases and also minimize any anxiety or apprehension associated with the decisions of the potential parents. *** Genetic counselors provide information to aid in the decision-making, but do not decide on pregnancy issues for potential parents. Viable options to a high risk of pregnancy 1. Adoption 2. Artificial insemination Prenatal Diagnosis: Assessing Potential Problems During Pregnancy Two medical techniques can be used to test a fetus for diseases and genetic defects: 1. Amniocentesis
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a. Time of occurrence: 14 th or 15 th week of pregnancy b. Procedure: Extraction of amniotic fluid from amniotic sac where the fetus is located. 2. Chorionic villus sampling (CVS) a. Time of occurrence: Between 9 th and 14 th week of pregnancy b. Procedure: Extraction of tissue from placenta. Risk of both procedures: Minimal Advantage of both procedures: 1. Ability to test for congenital (before birth) defects 2. Identify sex
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This document was uploaded on 10/26/2011 for the course PSYCH 2400 at UVA.

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18 - Chapter8:Studyguide 18:32 The Biological Viewpoint The...

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