PSYC1110 Lecture Notes - Lecture 5: Twin

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7 Oct 2015
Psychology September 16 Lecture 5
Political Gridlock
Current political debates may be caused by how individuals respond to change. Change can be
perceived as threatening or as an opportunity.
Hypothesis: differences in DNA  diff. in response to change  diff. in political attitude
Political attitudes may vary with physiological traits
Case study: Twins and political attitudes
- Identical twins showed similar political attitudes despite being raised in different
households (different environments) while fraternal twins had a greater difference in
political attitudes, suggesting that political attitudes are biologically based.
There are established connections between:
- DNA and response to stressors
- Response to stressors and political attitudes, thus providing evidence that left/right
political differences reflect response to threat and may have a genetic basis.
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