Question 1

T score scales are especially common for______ tests.

Accepted Answer

A)   intelligence
B)   personality
C)   achievement
D)   aptitude

Question 2

Which of the following is NOT true about the concept of variance?

Accepted Answer

A)   variance is computed from the mean of the squared deviations
B)   psychometricians prefer variance to standard deviation as an index of variability
C)   variance is represented by sigma squared
D)   variance is standard deviation squared

Question 3

The middlemost score when all the scores have been ranked is called the

Accepted Answer

A)   mean
B)   median
C)   mode
D)   second quartile

Question 4

The particular choice of items on a test is ______a source of measurement error in psychological testing.

Accepted Answer

A)   always
B)   usually
C)   rarely
D)   never

Question 5

Regarding the true score, which statement is correct?

Accepted Answer

A)   we can never know the true score with certainty
B)   we can derive a probability that the true score resides within a certain interval
C)   we can derive a best estimate of the true score
D)   all of the above

Question 6

If scores on ability tests A and B are negatively correlated, this usually means that

Accepted Answer

A)   scores on one of the tests are reported as errors
B)   abilities measured by the two tests are unrelated
C)   a high score on one test is associated with a low score on other
D)   all of the above

Question 7

When initial research indicates that an instrument produces skewed results in the standardization sample, test developers typically

Accepted Answer

A)   use a statistical transformation
B)   revamp the test at the item level
C)   obtain data from a second sample
D)   all of the above

Question 8

If the number of scores is even, the median

Accepted Answer

A)   is the average of the middlemost two scores
B)   is the higher of the middlemost two scores
C)   is the lower of the middlemost two scores
D)   cannot be computed

Question 9

What is required to compute the standard error of measurement?

Accepted Answer

A)   reliability coefficient and SD of the test scores
B)   SD of the test scores and validity coefficient
C)   reliability coefficient and N of subjects
D)   SD of the test scores and N of subjects

Question 10

The main advantage of_______ is retaining the relative magnitude of distances between successive values found in the original raw scores.

Accepted Answer

A)   percentiles
B)   standard scores
C)   percentile ranks
D)   composite scores

Question 11

What is the relationship between the variance and the standard deviation?

Accepted Answer

A)   they are completely unrelated
B)   they are usually correlated to a modest degree
C)   one can be computed from the other
D)   one is the inverse of the other

Question 12

Which of the following conclusions about item response theory distinguishes it from classical testing theory?

Accepted Answer

A)   test scores are more reliable for individuals with average ability and less so for individuals with very high or low ability
B)   shorter tests can be more reliable than longer tests
C)   better suited for computerized adaptive testing
D)   all the above

Question 13

Full Scale IQ is ______percent certain to be accurate within plus or minus 5 IQ points.

Accepted Answer

A)   80
B)   90
C)   95
D)   100

Question 14

The Pearson r between two halves of a test will usually _________the reliability of the full instrument.

Accepted Answer

A)   overestimate
B)   approximate
C)   underestimate
D)   none of the above

Question 15

The most common method for obtaining split halves of a test is to compare scores on

Accepted Answer

A)   the first and second half of the test
B)   the odd and even items of the test
C)   randomly divided halves of the test
D)   none of the above

Question 16

Renorming of tests should

Accepted Answer

A)   be the exception, not the rule
B)   be the rule, not the exception
C)   never be conducted
D)   none of the above

Question 17

Why do psychologists prefer the normal distribution?

Accepted Answer

A)   it has useful features for statistical inference
B)   it can be defined with mathematical precision
C)   it often arises spontaneously in nature
D)   all of the above

Question 18

A small x is used to designate

Accepted Answer

A)   the mean
B)   correlation
C)   individual scores
D)   deviation scores

Question 19

The value of a reliability coefficient can vary between

Accepted Answer

A)   -1.0 and +1.0
B)   0.0 and +1.0
C)   0.0 and 0.9
D)   two numbers that depend upon the underlying units of measurement

Question 20

A tabular depiction of the established relationship between test scores and expected outcome on a relevant task is known as an)

Accepted Answer

A)   correlation coefficient
B)   histogram
C)   frequency polygon
D)   expectancy table

Exam 3: Norms and Reliability

Which of the following is NOT true about the concept of variance?

Correct AnswerverifiedShow Answer

The value of a reliability coefficient can vary between

Correct AnswerverifiedShow Answer

What is required to compute the standard error of measurement?

Correct AnswerverifiedShow Answer

The most common method for obtaining split halves of a test is to compare scores on

Correct AnswerverifiedShow Answer

Why do psychologists prefer the normal distribution?

Correct AnswerverifiedShow Answer

Regarding the true score, which statement is correct?

Correct AnswerverifiedShow Answer

The main advantage of_______ is retaining the relative magnitude of distances between successive values found in the original raw scores.

Correct AnswerverifiedShow Answer

If scores on ability tests A and B are negatively correlated, this usually means that

Correct AnswerverifiedShow Answer

T score scales are especially common for______ tests.

Correct AnswerverifiedShow Answer

What is the relationship between the variance and the standard deviation?

Correct AnswerverifiedShow Answer

The Pearson r between two halves of a test will usually _________the reliability of the full instrument.

Correct AnswerverifiedShow Answer

If the number of scores is even, the median

Correct AnswerverifiedShow Answer

Which of the following conclusions about item response theory distinguishes it from classical testing theory?

Correct AnswerverifiedShow Answer

When initial research indicates that an instrument produces skewed results in the standardization sample, test developers typically

Correct AnswerverifiedShow Answer

Full Scale IQ is ______percent certain to be accurate within plus or minus 5 IQ points.

Correct AnswerverifiedShow Answer

A tabular depiction of the established relationship between test scores and expected outcome on a relevant task is known as an)

Correct AnswerverifiedShow Answer

The middlemost score when all the scores have been ranked is called the

Correct AnswerverifiedShow Answer

Renorming of tests should

Correct AnswerverifiedShow Answer

A small x is used to designate

Correct AnswerverifiedShow Answer

The particular choice of items on a test is ______a source of measurement error in psychological testing.

Correct AnswerverifiedShow Answer

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