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Cognitive, Plastic, and Contextual. Cognitive is known as the thinking or knowledge. An example of this would be a child's speech ability as a baby and as they grow up, their vocabulary tends to expand and become broaden. Meanwhile, plastic can be understood by the example of the removal of the baby's brain and seeing that they day dream just as an adult does. Lastly, contextual is determined or brought upon by social and/or physical environment. An example of this would be social ranking whether wealthy or poor determines how one is raised or brought up and the physical environment as in the community or setting, will also dictate how one carries themselves

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Physical , mental and emotional changes are examined by developmental psychology. For example: A child is raised in an abusive household will tend to have anger problems as they grow up or they will tend to always result to abuse as a solution to everything since that has been instilled in them.

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# 2. What are three (3) of the seven principles of life-span development mentioned in the video; and share some details about the three you chose. 

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# 2. What are three (3) of the seven principles of life-span development mentioned in the video; and share some details about the three you chose. 

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

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

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

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

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Scientists use twins to help them examine the study of human growth since they are technically twins and are identical so they would hope that they would be interested into the same things or act the same way.

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

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

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Gene help determine the physical appearance of a person. For example: eye color, hair color, skin color, hair texture and etc. Those are things that a person is born with or develops along the way. Whereas that person's environment around them can determine how they adapt or change their physical appearance. Prime example would be moving to a different state with a totally different climate to what a person has been prone to living in. First, their way of dressing will change. Then, their skin complexion might change depending on if they'll get a tan or become lighter due to the lack of sunlight. Basically, genes are something that cannot be changed but the environment is something that can be and can be adapted to. Just think in terms of evolution