NURS 5366 ASSIGNMENT 3: RELIABILITY AND
VALIDITY IN RESEARCH INSTRUMENTS NEWEST 2026
ACTUAL EXAM| COMPLETE REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ ALREADY
GRADED A+ (MOST RECENT!!)
1. A researcher measures blood pressure three times in one hour.
The values are 120/80, 122/82, and 121/81. This
demonstrates:
A) Validity
B) Reliability
C) Accuracy
D) Sensitivity
Answer: B) Reliability
Rationale: Reliability refers to consistency of measurement.
Repeated measures yielding similar results indicate high
reliability.
2. An instrument that measures what it is intended to measure is
said to have:
A) Reliability
1
, B) Objectivity
C) Validity
D) Precision
Answer: C) Validity
Rationale: Validity is the degree to which an instrument
measures the construct it claims to measure.
3. True or false: An instrument can be reliable without being
valid.
Answer: True
Rationale: Reliability is necessary but not sufficient for validity. A
scale that consistently gives the same wrong weight is reliable
but not valid.
4. Which type of validity is most concerned with whether items
adequately sample the content area?
A) Criterion validity
B) Face validity
C) Content validity
D) Construct validity
2
,Answer: C) Content validity
Rationale: Content validity assesses whether the instrument
covers all relevant parts of the construct.
5. Split-half reliability is a measure of:
A) Inter-rater reliability
B) Internal consistency
C) Test-retest reliability
D) Parallel forms reliability
Answer: B) Internal consistency
Rationale: Split-half reliability assesses how well items on a test
measure the same underlying construct.
6. A Cronbach’s alpha of 0.92 indicates:
A) Poor internal consistency
B) Moderate reliability
C) Excellent internal consistency
D) Low validity
Answer: C) Excellent internal consistency
Rationale: Cronbach’s alpha ≥ 0.90 is considered excellent;
≥0.70 acceptable for research.
3
, 7. Which statistic is used for test-retest reliability?
A) Pearson’s r
B) Chi-square
C) ANOVA
D) Factor analysis
Answer: A) Pearson’s r
Rationale: Pearson correlation coefficient measures the stability
of scores over time.
8. Face validity is established by:
A) Statistical analysis
B) Expert review of item appearance
C) Correlation with a gold standard
D) Factor loadings
Answer: B) Expert review of item appearance
Rationale: Face validity is a subjective judgment that the
instrument looks like it measures the intended concept.
9. A researcher correlates scores on a new depression scale with
scores on the Beck Depression Inventory. This tests:
4
VALIDITY IN RESEARCH INSTRUMENTS NEWEST 2026
ACTUAL EXAM| COMPLETE REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ ALREADY
GRADED A+ (MOST RECENT!!)
1. A researcher measures blood pressure three times in one hour.
The values are 120/80, 122/82, and 121/81. This
demonstrates:
A) Validity
B) Reliability
C) Accuracy
D) Sensitivity
Answer: B) Reliability
Rationale: Reliability refers to consistency of measurement.
Repeated measures yielding similar results indicate high
reliability.
2. An instrument that measures what it is intended to measure is
said to have:
A) Reliability
1
, B) Objectivity
C) Validity
D) Precision
Answer: C) Validity
Rationale: Validity is the degree to which an instrument
measures the construct it claims to measure.
3. True or false: An instrument can be reliable without being
valid.
Answer: True
Rationale: Reliability is necessary but not sufficient for validity. A
scale that consistently gives the same wrong weight is reliable
but not valid.
4. Which type of validity is most concerned with whether items
adequately sample the content area?
A) Criterion validity
B) Face validity
C) Content validity
D) Construct validity
2
,Answer: C) Content validity
Rationale: Content validity assesses whether the instrument
covers all relevant parts of the construct.
5. Split-half reliability is a measure of:
A) Inter-rater reliability
B) Internal consistency
C) Test-retest reliability
D) Parallel forms reliability
Answer: B) Internal consistency
Rationale: Split-half reliability assesses how well items on a test
measure the same underlying construct.
6. A Cronbach’s alpha of 0.92 indicates:
A) Poor internal consistency
B) Moderate reliability
C) Excellent internal consistency
D) Low validity
Answer: C) Excellent internal consistency
Rationale: Cronbach’s alpha ≥ 0.90 is considered excellent;
≥0.70 acceptable for research.
3
, 7. Which statistic is used for test-retest reliability?
A) Pearson’s r
B) Chi-square
C) ANOVA
D) Factor analysis
Answer: A) Pearson’s r
Rationale: Pearson correlation coefficient measures the stability
of scores over time.
8. Face validity is established by:
A) Statistical analysis
B) Expert review of item appearance
C) Correlation with a gold standard
D) Factor loadings
Answer: B) Expert review of item appearance
Rationale: Face validity is a subjective judgment that the
instrument looks like it measures the intended concept.
9. A researcher correlates scores on a new depression scale with
scores on the Beck Depression Inventory. This tests:
4
