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imagine an experiment where you were interested in finding out how to help people do well on exams in an astronomy class. you randomly assign participants into one of three exam prep groups: 1-additional study and take a practice test, 2-additional study only, or 3- come to the lab and play video games. after participants complete their assigned conditions, they return to the lab three days later and take a final test. what is the independent variable?
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one research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?
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“the point at which a person’s ‘weight thermostat’ is programmed in the brain” is a description of