The "Lub" Sound of the "Lub-Dup" Heart Beat Is Due

question 27

Multiple Choice

The "lub" sound of the "lub-dup" heart beat is due to what?

• A)the closing of the AV valves
• B)the closing of the semilunar valves
• C)the right atrium contracting
• D)the left atrium contracting
• E)the relaxation of both atria

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Definitions:

Test-Retest Reliability

The consistency of a measure or test over time when administered to the same individuals on two occasions.

Test-Retest Correlation

A measure of the consistency of a psychological test or assessment over time by administering the same test to the same individuals on two different occasions.

Median

The score that falls in the middle of all the scores on the test; also called the 50th percentile.

Predictive Validity

When a scale is related to a concrete outcome or behavior.