Question 1

When should we measure internal consistency reliability?

Accepted Answer

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Question 2

Construct validity is the most difficult of all the validities to establish.

Accepted Answer

It is true that construct validity is the most difficult validity to establish, as it involves demonstrating that a measure accurately assesses the underlying construct or concept it is intended to measure. This requires a thorough understanding of the construct and its various components, as well as careful selection and validation of the measures used.

Question 3

The observed score equals the true score minus error score.

Accepted Answer

The observed score equals the true score plus error score, not minus. This is known as the classical test theory equation which states that the observed score is composed of the true score (the individual's actual level of skill or knowledge being measured) and error score (random factors that can affect the measurement, such as test anxiety or unclear wording of questions).

Question 4

How does error impact reliability? Write the general equation for reliability that demonstrates this concept.

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Question 5

How do reliability and validity work together?

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Question 6

What is the difference between reliability and validity?

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Question 7

Internal consistency reliability tests how each individual item score correlates with the total score.

Accepted Answer

Internal consistency reliability examines the extent to which each item on a questionnaire or test is measuring the same construct or idea. It tests how well each item correlates with the total score of the questionnaire or test. The most common method of measuring internal consistency is Cronbach's alpha.

Question 8

To use archery practice as a metaphor for reliability and validity,hitting the bull's-eye of a target demonstrates ______,whereas repeatedly hitting the target in the same small area demonstrates ______.

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Question 9

Why can we not know the true score for a test?

Accepted Answer

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Question 10

When should you use construct validity?

Accepted Answer

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Question 11

A test can be valid but not reliable,but it is impossible to have a test that is reliable and not valid.

Accepted Answer

A test can be reliable, meaning it produces consistent results, but not valid if it does not measure what it is intended to measure.

Question 12

Criterion validity assesses whether a test reflects a set of abilities in a future setting.

Accepted Answer

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Question 13

Interrater reliability examines the percentage of agreement between raters.

Accepted Answer

Interrater reliability measures the degree of agreement between two or more raters, so the answer is true.

Question 14

Name four types of reliability and what they measure.

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Question 15

What are the traditional types of validity?

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Question 16

Explain the formula for understanding observed scores.What is included in any observed score?

Accepted Answer

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Quiz 6: Understanding Reliability and Validity: Just the Truth