Question 1

Internal-consistency estimates of reliability are inappropriate for

Accepted Answer

A)   reading achievement tests.
B)   scholastic aptitude/intelligence tests.
C)   word processing tests based on speed.
D)   tests purporting to measure a single personality trait.

Question 2

The greater the proportion of the total variance attributed to true variance,the more ____________ the test.

Accepted Answer

A)   scientific
B)   variable
C)   reliable
D)   expensive

Question 3

In general,which of the following is TRUE of the relationship between the magnitude of the test-retest reliability estimate and the length of the interval between test administrations?

Accepted Answer

A)   The longer the interval, the lower the reliability coefficient.
B)   The longer the interval, the higher the reliability coefficient.
C)   The magnitude of the reliability coefficient is typically not affected by the length of the interval between test administrations.
D)   The magnitude of the reliability coefficient is always affected by the length of the interval between test administrations, but one cannot predict how it is affected.

Question 4

As used in Chapter 5 of your text,the term inflation of variance is synonymous with

Accepted Answer

A)   restriction of variance.
B)   restriction of range.
C)   inflation of range.
D)   None of these

Question 5

A reliability coefficient is

Accepted Answer

A)   an index.
B)   a proportion of the total variance attributed to true variance.
C)   unaffected by a systematic source of error.
D)   All of these

Question 6

Which is TRUE about reliability in the psychometric sense?

Accepted Answer

A)   reliability is an all-or-none measurement
B)   a test may be reliable in one context and unreliable in another
C)   a reliability coefficient may not be derived for personality tests
D)   alternate forms reliability may not be derived for personality tests

Question 7

If a device to measure blood pressure consistently overestimated every assessee's actual blood pressure by 10 units,which of the following would be TRUE of the reliability of this measuring device as the years passed?

Accepted Answer

A)   It would increase.
B)   It would decrease.
C)   It would not be affected.
D)   It would alternately decrease and increase.

Question 8

When more than two scorers are used to determine inter-scorer reliability,the statistic of choice is

Accepted Answer

A)   Pearson r.
B)   Spearman's rho.
C)   KR-20.
D)   coefficient alpha.

Question 9

If a time limit is long enough to allow test-takers to attempt all items,and if some items are so difficult that no test-taker is able to obtain a perfect score,then the test is referred to as a ________ test.

Accepted Answer

A)   speed
B)   power
C)   reliable
D)   valid

Question 10

The fact that cultural factors may be operating to weaken an item's ability to discriminate between groups is evident from:

Accepted Answer

A)   Lord's treatise entitled Item Response Theory.
B)   an item characteristic curve.
C)   an information function.
D)   Georg Rasch's unauthorized biography, You Can Never Be Too Rich or Too "Rasch."

Question 11

The Spearman-Brown formula is used for:

Accepted Answer

A)   correcting for one half of the test by estimating the reliability of the whole test.
B)   determining how many additional items are needed to increase reliability up to a certain level.
C)   determining how many items can be eliminated without reducing reliability below a predetermined level.
D)   All of these

Question 12

In classical test theory,an observed score on an ability test is presumed to represent the testtaker's

Accepted Answer

A)   true score.
B)   true score less the variance.
C)   true score combined with extraneous factors.
D)   the testtaker's true score and error.

Question 13

Which of the following is TRUE for parallel forms of a test?

Accepted Answer

A)   The means of the observed scores are equal for the two forms.
B)   The variances of the estimated scores are equal for the two forms.
C)   The means and variances of the observed scores are equal for the two forms.
D)   The means and variances of the estimated scores are equal for the two forms.

Question 14

An estimate of test-retest reliability is often referred to as a coefficient of stability when the time interval between the test and retest is more than

Accepted Answer

A)   30 days.
B)   60 days.
C)   3 months.
D)   6 months.

Question 15

As the degree of reliability increases,the proportion of

Accepted Answer

A)   total variance attributed to true variance decreases.
B)   total variance attributed to true variance increases.
C)   total variance attributed to error variance increases.
D)   None of these

Question 16

IRT is a term used to refer to

Accepted Answer

A)   a model that has many parameters.
B)   a parameter that has many models.
C)   a family of models for data analysis.
D)   a dysfunctional family of models.

Question 17

The "20" and "21" in KR-20 and KR-21 represent

Accepted Answer

A)   numbers held constant in the denominator.
B)   numbers held constant in the numerator.
C)   the order in which the formulas were created.
D)   the age of Fred Kuder's son and nephew at the time the formulas were developed.

Question 18

A coefficient alpha over .9 may indicate that

Accepted Answer

A)   the items in the test are too dissimilar.
B)   the test is not reliable.
C)   the items in the test are redundant.
D)   the test is biased against low-ability individuals.

Question 19

Coefficient alpha is appropriate to use with all of the following test formats EXCEPT

Accepted Answer

A)   multiple-choice.
B)   true-false.
C)   short-answer for which partial credit is awarded.
D)   essay exam with no partial credit awarded.

Question 20

The precise amount of error inherent in the reliability estimate published in a test manual will vary with

Accepted Answer

A)   the purchase price of the test (the more expensive, the less the error) .
B)   the sample of test-takers from which the data were drawn.
C)   the population of test user actually using a published test.
D)   All of these

Exam 5: Reliability

In classical test theory,an observed score on an ability test is presumed to represent the testtaker's

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The greater the proportion of the total variance attributed to true variance,the more ____________ the test.

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If a device to measure blood pressure consistently overestimated every assessee's actual blood pressure by 10 units,which of the following would be TRUE of the reliability of this measuring device as the years passed?

Correct AnswerverifiedShow Answer

A reliability coefficient is

Correct AnswerverifiedShow Answer

As the degree of reliability increases,the proportion of

Correct AnswerverifiedShow Answer

Internal-consistency estimates of reliability are inappropriate for

Correct AnswerverifiedShow Answer

As used in Chapter 5 of your text,the term inflation of variance is synonymous with

Correct AnswerverifiedShow Answer

Coefficient alpha is appropriate to use with all of the following test formats EXCEPT

Correct AnswerverifiedShow Answer

In general,which of the following is TRUE of the relationship between the magnitude of the test-retest reliability estimate and the length of the interval between test administrations?

Correct AnswerverifiedShow Answer

The "20" and "21" in KR-20 and KR-21 represent

Correct AnswerverifiedShow Answer

IRT is a term used to refer to

Correct AnswerverifiedShow Answer

Which is TRUE about reliability in the psychometric sense?

Correct AnswerverifiedShow Answer

An estimate of test-retest reliability is often referred to as a coefficient of stability when the time interval between the test and retest is more than

Correct AnswerverifiedShow Answer

The fact that cultural factors may be operating to weaken an item's ability to discriminate between groups is evident from:

Correct AnswerverifiedShow Answer

When more than two scorers are used to determine inter-scorer reliability,the statistic of choice is

Correct AnswerverifiedShow Answer

The precise amount of error inherent in the reliability estimate published in a test manual will vary with

Correct AnswerverifiedShow Answer

Which of the following is TRUE for parallel forms of a test?

Correct AnswerverifiedShow Answer

The Spearman-Brown formula is used for:

Correct AnswerverifiedShow Answer

If a time limit is long enough to allow test-takers to attempt all items,and if some items are so difficult that no test-taker is able to obtain a perfect score,then the test is referred to as a ________ test.

Correct AnswerverifiedShow Answer

A coefficient alpha over .9 may indicate that

Correct AnswerverifiedShow Answer

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