Answer will be over 150 words or a minimum of 12 sentences for each discussion question. There will be

Answer will be over 150 words or a minimum of 12 sentences for each discussion question. There will be at least TWO References with ONE being a Peer-reviewed article no more than 5 years old. There must be in-text citations and the references. Please cite sources you use.

Discussion Question #1
Compare independent variables, dependent variables, and extraneous variables. Describe two ways that researchers attempt to control extraneous variables. Support your answer with peer-reviewed articles.

Discussion Question #2
Describe the “levels of evidence” and provide an example of the type of practice change that could result from each.

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