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The investigators concluded that the different types of movies had different effects on appetite. two variables in a study are said to be confounded if:

When researchers plan to involve a prisoner population, which answer best describes the type of federally supported research that may be conducted?

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Thomas Malthus' prediction of mass starvation resulting from diminishing marginal returns has NOT been fulfilled because

Contradicting Carla and Jorge make plans to have a quiet weekend in their apartment. Promptly at 9 p. m. Friday night, Carla's parents arrive for a surprise weekend visit.

To balance historic psychology's focus on human problems and negative emotions, martin seligman called for the development of

How did the Netherlands establish territorial claims in North America?

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The majority of immigrants who came to the United States in the late-1800s were from which of these countries? A) Mexico and Cuba B) Canada and Japan C) England and Spain D) Poland and Germany