Evaluating the Experiment from the Inside: Internal Validity Jack Just

question 24

Multiple Choice

Evaluating the Experiment from the Inside: Internal Validity Jack just completed a study of the effects of caffeine and rave music on recall.He is excited about finding a significant interaction and says, "This is so cool! I've proved my research hypothesis.Jolt cola with rave music is the way to study." Jack's experiment cannot prove his research hypothesis because his results could be due to

• A)confounding.
• B)Type 1 error.
• C)Type 2 error.
• D)confounding and/or Type 1 error.

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Definitions:

Bulimia Nervosa

An eating disorder characterized by recurrent binge eating followed by compensatory behaviors like purging.

Binge Eating Disorder

A serious eating disorder characterized by frequent episodes of consuming very large amounts of food without behaviors to prevent weight gain, such as vomiting.

Anorexia Nervosa

An eating disorder characterized by an abnormally low body weight, intense fear of gaining weight, and a distorted perception of body weight or shape.

Prader-Willi Syndrome

A genetic disorder characterized by a range of physical, mental, and behavioral problems including chronic hunger and obesity.