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Unformatted text preview: 1. 50% for identical twins 2. 20% for fraternal twins Problems: 1. Potential to overestimate genetic factor if twins are treated by environment as more alike than they really are. 2. Underestimates genetic factors if twins are treated more differently than they really are. 3. Difficult to control for other potential causes. B. Adoption Studies-Ideal setting for determining genetic input (in theory) *How much of behavior is natural (genetically from biological parent), and how much is from adopted parents?...
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This note was uploaded on 04/19/2011 for the course CJUS 200 taught by Professor Kipp during the Winter '09 term at Indiana.
- Winter '09