To develop and test a model for both describing and predicting Iowa school districts' pupil transportation costs, the author first tested the generalizability of a 1980 study by McAvoy of 37 Iowa districts and then identified independent variables that would explain Iowa pupil transportation costs. Data were gathered on all 447 Iowa districts for…

The problem of change scores' correlation with initial status and the problem of low reliability in the measurement of change are addressed. By treating the correlation between initial status and change as a design problem rather than a statistical issue, research questions can be formulated in terms of changes in the shapes of growth curves…

A review of cross-validation shrinkage formulas is presented which focuses on the theoretical and practical problems in the use of various formulas. Practical guidelines for use of both formulas and empirical cross-validation are provided. A comparison of results using these formulas in a range of situations is then presented. The result of these…

In winter 1984, a study was conducted at North Seattle Community College to determine the correlation between students' reading levels and final grades in courses for which there were no prerequisites. The Stanford Reading Test was administered in 7 humanities course sections and 10 course sections from other disciplines. Study findings, based on…

Five personality scales administered as part of a larger study of personality correlates of children with articulation errors resulted in descriptive statistics on grade by sex samples, school effects, test-retest coefficients, and intercorrelations. (Author/KM)

A procedure for estimating the degree to which a subtest uniquely contributes to total test performance is presented and discussed. Uniqueness analysis may be appropriately applied to any composite measurement instrument such as a multipart test or a multitest battery to assess the unique contribution of each component to the total test. The…

Outlined is a model for transformation of one factor matrix to congruence with a second or target matrix in which the correlations among the transformed factors are constrained to certain pre-specified values. Procedures are developed for implementing the model, and are illustrated with example factor solutions. (Author/RC)

A general framework is presented to help understand the relationship between motivation and self-regulated learning. According to the framework, self-regulated learning can be facilitated by the adoption of mastery and relative ability goals and hindered by the adoption of extrinsic goals. In addition, positive self-efficacy and task value beliefs…

Three separate papers are included in this report. The first describes a two-stage procedure for choosing from among several instructional programs the one which maximizes the probability of passing the test. The second gives the exact sample sizes required to determine whether a squared multiple correlation coefficient is above or below a known…

A research study was designed to test the relationship between the number of eye fixations and amount of learning as determined by a criterion referenced posttest. The study sought to answer the following questions: (1) Are differences in eye movement indices related to the posttest score? (2) Do differences in eye movement indices of subjects…