Question 1

Test-retest reliability focuses on the _of an instrument.&#10;A) stability&#10;B) accuracy&#10;C) truth&#10;D) correctness

Accepted Answer

Test-retest reliability measures the degree of stability of an instrument over time. It assesses whether using the instrument to measure the same variable on the same population produces consistent results at different points in time. It does not measure accuracy, truth, or correctness, but rather the consistency and stability of the instrument.

Question 2

Which of the following is not an assumption underlying testing and measurement?&#10;A) Various approaches to measuring aspects of the same thing can be useful.&#10;B) Error is rarely present in the measurement process.&#10;C) Present day behavior predicts future behavior.&#10;D) Testing and assessment benefit society.

Accepted Answer

The assumption that error is rarely present in the measurement process is not accurate. In fact, all measurements are subject to some degree of error, and it is important to take this into account when interpreting the results of a test or measurement.

Question 3

Which of the following statements accurately describes test-retest reliability?&#10;A) measure of consistency of scores over time&#10;B) measure of consistency of scores obtained from two equivalent halves of the same examination&#10;C) measure of consistency with which a test measures a single construct/concept&#10;D) measure of degree of agreement between two or more scores

Accepted Answer

Test-retest reliability measures the consistency of scores over time. It is determined by administering the same test to the same group of individuals on two separate occasions and then calculating the correlation coefficient between the two sets of scores. High test-retest reliability indicates that the test produces consistent and stable results over time.

Question 4

Which of the following is a type of criterion-related validity evidence?&#10;A) concurrent validity&#10;B) predictive validity&#10;C) internal consistency&#10;D) both a and b

Accepted Answer

Both concurrent validity and predictive validity are types of criterion-related validity evidence, which compares the scores of the test with other measures of the same construct. Internal consistency, on the other hand, is a type of reliability evidence that measures the consistency of the scores within the test. Therefore, the best choice is D, as it includes both types of criterion-related validity evidence.

Question 5

___refers to how well the particular sample of behaviors used to measure a characteristic reflects the entire domain of behaviors that constitutes that characteristic.&#10;A) Construct validity&#10;B) Criterion-related validity&#10;C) Content validity&#10;D) Face validity

Accepted Answer

Content validity refers to how well a sample of behaviors used to measure a characteristic represents the entire domain of behaviors that make up that characteristic. Construct validity refers to how well a measure actually measures the theoretical construct it was designed to measure. Face validity refers to whether a measure appears to be an accurate measure of what it is designed to measure. Criterion-related validity refers to how well a measure predicts actual behavior or outcomes related to the characteristic being measured.

Question 6

Cronbach's alpha is used to determine which of the following instrument attributes?&#10;A) stability&#10;B) internal consistency&#10;C) construct validity&#10;D) sensitivity

Accepted Answer

Cronbach's alpha is used to determine the internal consistency of an instrument, which refers to how well the individual items of the instrument are measuring the same construct.

Question 7

Which of the following is not a type of reliability?&#10;A) test-retest&#10;B) split-half&#10;C) content&#10;D) internal consistency

Accepted Answer

Content validity is a type of validity, not reliability. The other options (test-retest, split-half, and internal consistency) are all types of reliability.

Question 8

As a nurse, you rate a patient's pain on a scale from severe to low. This results in which type of scale?&#10;A) interval&#10;B) ratio&#10;C) ordinal&#10;D) nominal

Accepted Answer

The scale used to rate a patient's pain is ordinal, as the values (severe, moderate, mild, low) have a specific order but the differences between them are not necessarily equal. The other options do not accurately describe this type of measurement scale.

Question 9

A high level of reliability:&#10;A) ensures high validity.&#10;B) has no effect on validity.&#10;C) is necessary, but not sufficient for validity.&#10;D) has a slight effect on validity.

Accepted Answer

A high level of reliability is necessary but not sufficient for validity. Reliability refers to the consistency of test scores or measurements, while validity refers to the accuracy and truthfulness of what a test or measurement is actually measuring. Therefore, even if a measure is highly reliable, it may not necessarily measure what it is intended to measure, which affects its validity.

Question 10

An estimate of reliability based on the average correlation among items within a test is called:&#10;A) internal consistency reliability.&#10;B) alternate forms reliability.&#10;C) test-retest reliability.&#10;D) split-half reliability.

Accepted Answer

Internal consistency reliability is measured by the correlation among items within a test. Therefore, internal consistency reliability can be estimated by calculating the average correlation among items within a test.

Deck 8: Principles of Measurement