Minnesota Twin Studies

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The biological level of analysis states that physiological factors have influence over cognitive, emotional, and behavioral instincts. One of the principles that help to define the biological level of analysis is that certain behavior patterns are hereditary. The Minnesota Twin Study (Bouchard et al., 1990) demonstrates the role of genetics in behavior.
The Minnesota Twin Study is a correlational study which seeks to establish the relationship between genetics and/or environment on personality. The study uses twins as a basis due to shared genetic material. The two types of twins, who were separated at birth and raised in different environments, are the (adult) participants; the data accumulated from these twins was compared to the control
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