In order to compare scores on individual subtests,
a. you can compare raw scores directly because of the use of a point scale.
b. raw scores are converted to standard scores.
c. weighted averages for each subscale are computed and then compared.
d. scores on subscales cannot be compared to one another.
Carryover effects only affect reliability when changes over time are
a. large.
b. systematic.
c. random.
d. due to practice effects.
Which subtest of the WAIS-IV is specifically related to working memory and attention?
a. letter-number sequencing
b. comprehension
c. vocabulary
d. similarity
For which of these constructs is it most appropriate to measure test-retest reliability?
a. IQ
b. Depression
c. Literacy
d. Blood pressure
Lowered performance compared to a previously higher level is referred to as
a. an index.
b. deterioration.
c. a ceiling effect.
d. manifold.
The reliability coefficient is
a. the mean of the observed scores.
b. the variance of the observed scores.
c. the ratio of the mean of the true scores on a test to the mean of the observed scores.
d. the ratio of the variance of the true scores on a test to the variance of the observed scores.
The best single measure of intelligence that is also the most stable is
a. information processing speed.
b. quantitative ability.
c. the ability to define words.
d. concentration.
Classical test theory assumes that
a. there are no errors in measurement.
b. each person has a true score.
c. observed scores almost always reflect true ability.
d. errors of measurement are systematic.
In the WAIS-IV, an index is created when
a. two or more subtests are related to a basic underlying skill.
b. a specified number of items is missed.
c. a criterion number of correct responses is obtained.
d. at least one subtest is related to an underlying skill.
Reliability theory combines De Moivre's concept of sampling error with Pearson's concept of _____________ in the context of measurement.
a. coefficient alpha
b. internal consistency
c. product moment correlation
d. domain sampling
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