Psychology hw#5

Psychology hw#5 - PSY 102: Psychology in the Modern World...

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PSY 102: Psychology in the Modern World Your Name: Instructor: Bob Melara Your Section: Spring 2008 Your TA’s Name: Homework #5 (Nature and Nurture) Due in Recitation: March 13 th -14 th Genetic Influences on Behavior Experiments using identical twins are often used to determine how much genes contribute to human behavior, personality, and development. This exercise will help you learn some of the issues in the design of twin studies. Your task is to design a well-controlled study that tests the hypothesis stated below. Refer to Chapter 1 of your textbook for help with experimental design. Twin Study Planning Worksheet Hypothesis : Identical twins reared separately will share a greater number of similarities than would be expected by chance alone. Participants : You have been given access to 20 pairs of identical twins, all separated sometime between birth and one year of age. To test your hypothesis, who would you include in your sample as a control group? The control group would be 20 pairs of identical twins that were raised in the same house in the same environment. By doing this, it will be easier to compare my results of the behavior of the 20 pairs of identical twins that were separated at birth to one year of age with the control group . Imagine that your identical twin sample consists of white males between ages 20 and 40. What implications would this have on your control group? The control and experimental group would have to be balanced. The age group between 20 and 40 would be difficult to separate and the age group has a large range. Participants who are around 40 act differently during certain activities than participants in their 20’s.
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Psychology hw#5 - PSY 102: Psychology in the Modern World...

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