Author Question: A nurse researcher should be concerned about an instrument's degree of internal consistency because ... (Read 36 times)

kwoodring · **on:** Jul 8, 2018

A nurse researcher should be concerned about an instrument's degree of internal consistency because it means what?

a. The instrument is appropriate to use to measure a single concept.
b. The instrument has low measurement error and high error variance.
c. More refinement of the instrument is needed before it can be applied.
d. The instrument is valid, but the reliability has yet to be determined.

Question 2

What property is established when the results of two separately administered tests that measure the same domain or concept are highly correlated?

a. Validity
b. Stability
c. Equivalence
d. Homogeneity

annierak · **Reply #1 on:** Jul 8, 2018

Answer to Question 1

ANS: A

Feedback
A Internal consistency or homogeneity reliability indicates that the items within the scale measure the same concept.
B This is an inaccurate statement.
C A high degree of internal consistency indicates that the instrument is refined; however, additional testing is always warranted.
D There is no indication that the instrument is valid; the reliability coefficient is very acceptable.

Answer to Question 2

ANS: A

Feedback
A Convergent validity example: two or more instruments that theoretically measure the same construct and are administered to the same subjects.
B The example in the stem matches validity, not reliability.
C The example in the stem matches validity, not reliability.
D The example in the stem matches validity, not reliability.