Suppose a Researcher Constructs a Six-Item Index for Measuring Risk-Taking

question 42

Multiple Choice

Suppose a researcher constructs a six-item index for measuring risk-taking propensity. Evidence that eighth graders who score high on the index are more likely to engage in risky behaviors (e.g., initiate sexual activity, use drugs) supports the index's

• A) test-retest reliability.
• B) internal consistency.
• C) intercoder reliability.
• D) convergent validity.

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Definitions:

Papillary Muscles

Muscular projections from the ventricular walls of the heart that attach to the cusps of the atrioventricular valves via the chordae tendineae and prevent valve inversion.

Regurgitation

The backward flow of blood through a valve in the heart due to the valve not closing properly, or the process of vomiting undigested food.

Cardiac Muscle Tissue

Tissue composed of cells that form the myocardium of the heart, responsible for the rhythmic contractions that pump blood.

Myocardium

The thick, muscular middle layer of the heart wall, composed of cardiac muscle cells that contract to pump blood through the circulatory system.