In the WAIS-IV, a full-scale IQ is obtained by
a. multiplying verbal and nonverbal scores.
b. dividing verbal scores by age and multiplying by 100.
c. adding scores of the various scales.
d. adding weighted scores of various scales.
What is the most useful indicator of reliability for the interpretation of individual scores?
a. split-half variance
b. item sampling
c. test-retest
d. standard error of measurement
Which WAIS-IV subtest measures such factors as the ability to learn an unfamiliar task, visual-motor dexterity, and the degree of persistence?
a. digit symbol
b. picture completion
c. picture arrangement
d. block design
Tests will be most reliable if they are
a. multidimensional.
b. unidimensional.
c. brief.
d. criterion-referenced.
The Verbal IQ has a mean of ____ and a standard deviation of ____.
a. 100; 15
b. 10; 3
c. 100; 10
d. 100; 3
The prophecy formula is used to
a. predict expected values.
b. estimate how long a test must be to achieve a desired level of reliability.
c. estimate how long a test must be to achieve a desired level of validity.
d. calculate variability.
Scaled scores on the WAIS-IV have a mean of ____ and a standard deviation of ____.
a. 10; 3
b. 50; 10
c. 100; 15
d. 100; 16
The formula used to estimate how long a test must be to achieve a desired level of reliability is
a. kappa
b. prophecy
c. Spearman
d. Thorndike
Which of the following is a supplemental verbal subtest?
a. matrix reasoning
b. letter-number sequencing
c. analogies
d. digit-symbol-coding
Test constructors can improve test reliability by
a. increasing the number of items.
b. decreasing the number of items.
c. retaining items that have the most face validity.
d. reducing the item to total correlation.
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