Author Question: A new instrument has been determined to be highly valid. The nurse researcher should interpret this ... (Read 20 times)

Engineer · **on:** Jul 8, 2018

A new instrument has been determined to be highly valid. The nurse researcher should interpret this finding to mean what?

a. It is sensitive but not specific.
b. Its use results in minimal random errors.
c. It accurately measures level of mentation.
d. Determination of interrater reliability is unnecessary.

Question 2

The reliability coefficient of a new instrument is established at 0.86. The nurse researcher should interpret this finding to mean what?

a. High error variance; high reliability
b. High error variance; low reliability
c. Low error variance; high reliability
d. Low error variance; low reliability

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

Answer to Question 1

ANS: C

Feedback
A This answer does not reflect validity, but rather it reflects characteristics of screening tests.
B Validity does not guarantee minimal random errors.
C Validity of an instrument is associated with its accuracy.
D Interrater reliability is not an example of validity.

Answer to Question 2

ANS: C

Feedback
A When the error variance is low, the reliability coefficient will be closer to 1; a reliability level of 0.70 or higher is considered acceptable.
B When the error variance is low, the reliability coefficient will be closer to 1; a reliability level of 0.70 or higher is considered acceptable.
C When the error variance is low, the reliability coefficient will be closer to 1; a reliability level of 0.70 or higher is considered acceptable.
D When the error variance is low, the reliability coefficient will be closer to 1; a reliability level of 0.70 or higher is considered acceptable.