This study investigated the relative importance of semantic, grammatical, phonological, and rapid naming abilities in predicting word identification skills in 200 children (grades 1-6) using correlation, factor analysis, multiple regression, and predictive outcome analysis techniques. Composite measures of these abilities correlated significantly…

This paper examines some of the problems that arise when conducting multivariate analyses with incomplete data. The literature on the effectiveness of several missing data procedures (MDP) is summarized. The most widely used MDPs are: (1) listwise deletion; (2) pairwise deletion; (3) variable mean; (4) correlational methods. No MDP should be used…

This paper describes a procedure for smoothing the proportions of a double-entry expectancy table which might be used in higher education admissions advising or other functions. The product of the smoothing procedure is a nomograph, a medium for displaying expectancies which provides pairs of individual values for two predictor variables rather…

This paper discusses the principles underlying discriminant analysis and constructs a simulated data set to illustrate its methods. Discriminant analysis is a multivariate technique for identifying the best combination of variables to maximally discriminate between groups. Discriminant functions are established on existing groups and used to…

An empirical method called Predicted Error Sum of Squares (PRESS) is advanced and studied. This method is used to examine the cross-validated prediction accuracies of some popular algorithms for weighted predictor variables. The weighting methods that were considered were ordinary least squares, ridge regression, regression on principal…

Three groups of adolescents (n=82) who received treatment for emotional disturbances as children were compared on four predictive indicators: organic problems, family problems, conduct disorders, and academic problems. Using childhood treatment data, significant differences were found between the aggressive group and one or both of the comparison…

The recent development of strong statistical techniques has made accurate predictions of recidivism possible. To investigate the utility of discriminant analysis methodology in making predictions of recidivism in juvenile offenders, the court records of 271 male and female juvenile offenders, aged 12-16, were reviewed. A cross validation group…

The role of anxiety, stress, and social support in predicting negative obstetrical outcomes was examined in a high-risk group of pregnant women. The predictor variables were assessed with separate self-report scales, including The Sarason Life Experience Survey, the Spielberger State/Trait Inventory, and a modified version of the Lazarus and Cohen…

The theoretical model of medical student performance begins with 38 measures, reduced to 18 without loss of information. These measures are shown to reflect five underlying theoretical interrelated variables: medical knowledge; clinical performance; science aptitude; college achievement; and attitudes and values. Results should be useful in…

Addresses the utility of a noninvasive measure of cardiac vagal tone in predicting developmental outcome among infants at risk for cognitive disabilities. Results suggest that measurement of cardiac vagal tone may provide an important means for assessing risk in birth-stressed populations. (Author/RH)

Reports a study that examined the influence of authoritarianism on the formation of behavioral intentions by female college students. High authoritarians took subjective norms less into account relative to low authoritarians, providing support for the theory that personal and subjective norms can be distinguished empirically. (LS)

This study of language performance tracked 34 poor children from kindergarten through second grade. The best kindergarten predictor for eventual diagnosis with a specific language impairment was a combination of the score on the Oral Vocabulary subtest of the Test of Oral Language Development and the score on a combination of experimental tasks.…

A study was conducted to identify the nonverbal behaviors predicting hireability, as well as the nonverbal behaviors candidates employ that predict hireability. Subjects were 25 campus recruiters, each of whom was given a cover letter explaining the purpose of the study and three copies of a Likert-type questionnaire on a single communicator…

Four methods were used to forecast monthly circulation totals in 15 midwestern academic libraries: dummy time-series regression, lagged time-series regression, simple average (straight-line forecasting), monthly average (naive forecasting). In tests of forecasting accuracy, dummy regression method and monthly mean method exhibited smallest average…

This study was undertaken to determine whether a significant correlation exists between the student's performance on the Advanced Placement (AP) Computer Science Examination and three factors: (1) mathematics scores on the Preliminary Scholastic Aptitude Test (PSAT); (2) a mathematics index score reflecting mathematics courses taken by the student…