Eighty-three Test of English as a Foreign Language™ (TOEFL®) CBT writing prompts that were administered between July 1998 and August 2000 were examined in order to identify differences in scores that could be attributed to the response mode chosen by examinees (handwritten or word processed). Differences were examined statistically using…

This guidebook is designed for data analysts who are working with computer data files that contain records with incomplete data. It indicates choices the analyst must make and the criteria for making those choices in regard to the following questions: (1) What resources are available for performing the imputation? (2) How big is the data file? (3)…

This paper reviews the application of the EM Algorithm to marginal maximum likelihood estimation of parameters in the latent class model and extends the algorithm to the case where there are monotone homogeneity constraints on the item parameters. It is shown that the EM algorithm can be used to obtain marginal maximum likelihood estimates of the…

The use of linear regression to identify variables that predict grades of black students in precalculus and calculus I was studied at Xavier University of Louisiana, a historically-black institution. The predictive power of the variables for black males and females was also assessed. These two mathematics courses are prerequisites for students…

The purpose of this research was to determine, through multiple regression analysis, the strength of the relationship of each of six predictor variables (undergraduate major, undergraduate grade-point average (GPA), graduate major, graduate GPA, Graduate Record Examinations (GRE) Quantitative score, and GRE Verbal score) to academic achievement…

Occupational burnout was studied in two samples including 1,191 public school teachers and 190 principals and vice principals. The following factors were examined for their ability to predict burnout: overall job stress, job satisfaction, job challenge, and role clarity. Burnout was measured using the intensity dimension of the Maslach Burnout…

The purpose of this study was to examine the effect that large within-examinee item difficulty variability had on estimates of the proportion of consistent classification of examinees into mastery categories over two test administrations. The classification consistency estimate was based on a single test administration from an estimation procedure…

A 3-year study was conducted to document individual differences in computer interest and use among middle school students and the psychological and social processes that may contribute to these differences. A questionnaire was used to assess the computer interest and use of a sample of approximately 400 middle school students at the end of each of…

A study of female delinquent behavior used as data responses from approximately 4,000 15- to 17-year old civilian noninstitutionized youth who participated in the 1980 New Youth Survey of the National Longitudinal Surveys of Labor Market Experience. Three criterion variables were used: work values, occupational aspirations, and labor force status.…

This study was designed to test the hypothesis that relatively field independent students will perform at a significantly higher level than relatively field dependent students in college-level, introductory economics courses. Previous studies focused on comparative pedagogies, or an examination of the student variables of gender, ability,…

Statistical models for school effectiveness rankings are assessed. An analysis of linear models with fixed regression parameters and models with separate regression parameters for each school is presented. In the first case, the regression lines are parallel and the ranking of the schools is the same for all student backgrounds. In the second…

The purpose of this study was to (1) ascertain the perceptions of teachers using volunteer aides and (2) to investigate the effect of the use of volunteer aides on student achievement when comparing anticipated achievement with actual academic achievement. The population included elementary school teachers and 169 student from 2 elementary schools…

Factor analyses of the Wechsler Intelligence Scale for Children-Revised (WISC-R) have typically yielded three factors: two generally understood to reflect basic verbal and performance dimensions and one about which there is no consensus with regard to what is measured. The aim of the present study is to elaborate the meaning of the third factor by…

This paper considers the application of Bayesian techniques for simultaneous estimation to the specification of regression weights for selection tests used in various technical training courses in the Marine Corps. Results of a method for m-group regression developed by Molenaar and Lewis (1979) suggest that common weights for training courses…

The two-parameter graded response latent trait model was applied under various conditions to two simulation data sets and to data obtained from a Likert-type attitude scale. The purpose was to investigate the invariance property of the item and person parameter estimates for polychotomously scored data. Correlation and regression analyses, as well…