Nature vs. nurture

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Nature vs. nurture

  1. 1. Nature vs. nurture <br />
  2. 2. Heredity<br />Transmission of characteristics from parents to offspring<br />Plays a key role in the development of traits<br />Height, eye color, etc.<br />Could be involved in many psychological disorders:<br />Depression <br />Schizophrenia<br />Bipolar disorder<br />Alcoholism<br />
  3. 3. Genes and Chromosomes<br />Genes- basic building blocks of heredity<br />Determined by pairs- one gene from each parent<br />Chromosomes <br />Made up of genes<br />Most normal human cells contain 46 chromosomes<br />When this does occur- a disability may occur<br />Down syndrome occurs when there is an extra chromosome on the 21st pair <br />22 of the 23 pairs for male and female are the same<br />The 23rd pair will determine whether we are male or female <br />
  4. 4. Nature-nurture debate <br />Nature- refers to what people inherit from their parents <br />Nurture- refers to a variety of factors such as education, culture, living conditions <br />Debate over which (nature or nurture) has a greater impact on the kind of person that you become<br />
  5. 5. Kinship studies <br />Twin Studies- used to determine how much genetics determine who we are<br />Identical twins share the same genetic makeup, so differences must be caused by the environment (nurture)<br />Fraternal twins only share some of their genes so differences could be caused by genetics or the environment<br />Identical twins are more likely to share disorders such as autism, substance abuse, and schizophrenia<br />The problem with twin studies is that they grow up together and therefore, have the same genes but also the same environment<br />
  6. 6. Identical twins <br />Share the same genes and environment <br />
  7. 7. Fraternal twins <br />A million to one odds: one black baby and one white <br />
  8. 8. Nature Vs. nurture debate<br />Questions to think about:<br />How are differences in intelligence, personality, and psychological disorders influenced by heredity and environment?<br />Is sexual orientation biologically predisposed or learned?<br />Should we treat depression as a disorder of the brain or a disorder of thought or both?<br />

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