This paper discusses the use of latent class structure as a modelling framework for tests in which much of the data conforms to a relatively small number of systematic patterns. Application of this framework to the analysis of tests has been limited because available parameter estimation algorithms can only handle a relatively small number of…

This study attempts to integrate and extend previous research by multivariate investigation to determine multidimensional relationships among both the Wechsler Adult Intelligence Scale-Revised (WAIS-R) subscales and the demographic variables for the 1981 WAIS-R standardization sample. Canonical correlation with orthogonal rotation of composite…

This study is an attempt at a cohesive characterization of the concept of essay reliability. As such, it takes as a basic premise that previous and current practices in reporting reliability estimates for essay tests have certain shortcomings. The study provides an analysis of these shortcomings--partly to encourage a fuller understanding of the…

Hypothetical data sets are used to demonstrate how canonical correlation methods subsume other commonly utilized parametric methods. Analysis of variance, analysis of covariance, multiple analysis of variance, and multiple analysis of covariance are heavily used by educational researchers. It is concluded that researchers would do well to consider…

A visual display is introduced that enables one to compare the predictive validities of all possible non-negatively weighted sums of two predictors. This two-predictor validity curve assesses the level of predictability of a criterion from composites of two predictors. Derivations are presented for the general case. For illustrative purposes, the…

This study examined the effect of type of correlation matrix on the robustness of LISREL maximum likelihood and unweighted least squares structural parameter estimates for models with categorical manifest variables. Two types of correlation matrices were analyzed; one containing Pearson product-moment correlations and one containing tetrachoric,…

This study compared the reliability and validity of two different measures of reading ability, the Degrees of Reading Power (DRP) and the Iowa Tests of Basic Skills (ITBS) Reading test and the ITBS Vocabulary test. The data consisted of scores of 377 grade 5 and grade 6 students on these tests, along with their assigned reading levels in the…

Using nationally representative data generated by the normal, day-to-day operation of schools, this research tested the major conclusions drawn from case studies focusing on principal effectiveness. On the basis of detailed information regarding individual student characteristics and achievements, detailed characteristics of teachers and their…

The purpose of this study was to examine the nature of the expectancy-performance relationship for each sex and to determine whether cross-sex comparisons are appropriate. Students' expectancies for academic performance and the relationship of the expectancies to actual grades were examined. Subjects were 331 students (168 women and 163 men)…

This study investigated the potential individual and combinatorial effects of learning strategy training and ability on children's acquisition of new concepts, and considered whether use of the generation of examples strategy would transfer to new concept lessons once the training had been completed. Subjects were 178 sixth grade students who were…

Information is provided on the characteristics of Los Angeles Community College District (LACCD) students and their general education and liberal arts knowledge. The first sections of the report provide information on the development and administration of the General Academic Assessment (GAA), an instrument containing representative items in the…

Information is provided on the characteristics of Miami-Dade Community College (MDCC) students and their general education and liberal arts knowledge. The first sections of the report provide information on the development and administration of the General Academic Assessment (GAA), an instrument containing representative items in the humanities,…

The purpose of the present longitudinal study was to determine how well a broad, comprehensive battery of tests administered in kindergarten predicts reading achievement in elementary school grades 1 through 6. The test variables were reduced to six predictive factors by factor analysis, and these, together with the variables, Child's Sex and…

Traditionally, library instruction has been based on the sources in the library and not on the process of seeking information. A new approach to library skills may be needed to enable students to become effective information users. This study investigated the information search process of 140 high school seniors in six high schools. Subjects were…

The second phase of a 1977 University of Pittsburgh research study that focused on the resistance to technology in libraries, this parallel study of library school students and faculty continued the investigation to determine: (1) the extent to which technological transformation of library systems will tend to encounter resistance as…