________ analysis is a statistical method for analyzing the intercorrelations among various measures or test scores. It can be used to identify clusters of correlated items that seem to be measuring some common ability

Raven's Matrices were developed to improve on which issue with intelligence tests?

a. Cross-cultural barriers b. Inconsistency of scores with retesting c. The time needed to complete a test d. Comparisons of old versus young people

People in Stage 4 sleep _____________

a) dream all the time b) are hard to wake up c) are easy to wake up d) hallucinate