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VIDEO 2- # 2. What are the seven (7) principles or perspectives (theories) of life-span development mentioned in the video; and share some brief details about each principle. 

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VIDEO 2- # 2. What are the seven (7) principles or perspectives (theories) of life-span development mentioned in the video; and share some brief details about each principle. 

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VIDEO 2-# 1. What are some of the changes that are examined by developmental psychology? 

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VIDEO 2-# 1. What are some of the changes that are examined by developmental psychology? 

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Physical
Emotional
Psychological

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VIDEO 1- # 1. What role do twins play in the study of human growth? 

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VIDEO 1- # 1. What role do twins play in the study of human growth? 

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Twins even though they look alike can be very different and you can study each twin differently

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VIDEO 1-# 2. What role do genes and the environment play in human growth? 

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VIDEO 1-# 2. What role do genes and the environment play in human growth? 

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Genes and environment can play a major role in some behaviors but other behaviors are simply just how the person is