Question 1

5 / 5 pts

A researcher is studying the effect of hypnosis on pain experienced during dental

procedures. The researcher’s study has two groups: those who receive hypnosis during

the procedure and those who receive no hypnosis. If the researcher plans to use a t-test

for the statistical analysis, which would be the best way to measure pain for this study?

pain scale where the participants report their pain as: none, some, intense

numerical pain scale with a range from 0 to 100

patient report of presence or absence of pain

p. 411

Question 2

5 / 5 pts

A researcher performs a series of pilot studies to evaluate whether a measurement tool

produces consistent results. This is an evaluation of:

Readability

Validity

Reliability

Accuracy

page 370

Question 3

5 / 5 pts

A researcher develops a 7-point Likert scale to evaluate feelings of well-being in

patients who are undergoing chemotherapy. The researcher administers this measure

to other, similar patients in several medical centers. This is done in order to:

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improve the test-retest reliability

strengthen the operational definition of the constructs

increase interrater reliability

Decrease mono-operation bias

page 370

Question 4

5 / 5 pts

In a pilot study to help train a group of data collectors who will evaluate children’s pain

using a FACES rating scale, the researcher examines the reliability of the scores of

each data collector. This is an example of which type of reliability measure?

Interrater reliability

Internal consistency reliability

Test-retest reliability

alternate forms reliability

page 372

Question 5

5 / 5 pts

A researcher evaluates scores of a paper and pencil instrument with variables at the

interval level of data using the Cronbach’s alpha coefficient statistical procedure. This is

a test of:

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