Riley Believes That Fingernail Length Is a Strong Predictor of Intelligence

question 152

Multiple Choice

Riley believes that fingernail length is a strong predictor of intelligence, and that cutting one's nails will lead to decreased intellectual skill. He enlists twenty participants to let their fingernails grow for six months and he gives them IQ tests every eight weeks. His data most likely have ________ statistical reliability and ________ validity.

• A)poor; poor
• B)good; good
• C)poor; good
• D)good; poor

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Definitions:

Heart Disease

A range of conditions affecting the heart, including coronary artery disease, heart arrhythmias, and congenital heart defects.

Medication

Substances used for medical treatment, especially for relieving or treating illness or disease.

Exercise

Physical activities intended to improve strength, fitness, and overall health.

Biopsychosocial Model

A broad view that attributes disease outcome to the complex, variable interaction of biological factors, psychological factors, and social factors.