The intercorrelation matrix of the ITPA subtests drawn from a population of disadvantaged children as presented by Cicirelli, et al. was analyzed by the Guttman-Lingoes SSA-I Program. The results supported two dimensions in the theoretical model suggested by the ITPA developers, the communication channel and the process level. (Author)

This is one of a series of reports on the National Longitudinal Study of Mathematical Abilities (NLSMA). Further, it is of the subseries that reports the data analyses for the possible correlates of mathematics achievement; this particular report contains the correlates classified as attitude and role variables for students in grades 4 through 12.…

An experimental study examined the possibility that proximity error could bias results from semantic differential questionnaires. Proximity error occurs when, due to the ordering, or polarity, of the differential scales, one answer on the semantic differential results in another answer to a subsequent question being substantially changed from what…

The study's purpose was to use the Adjective Check List (ACL), a self-administered personality assessment instrument, to determine whether there were response differences between a sample of Adult Basic Education (ABE) students and the general test norms. The ACL was administered to 142 students in ABE high school completion programs in Des…