The authors examined the subtype structure of smokers classified in the precontemplation stage of change within the transtheoretical model. From a general practice-based sample of 1,499 daily smoking patients from Germany (participation rate 80%), they used a subgroup of 929 smokers who were classified in the precontemplation stage and applied…

A model for predicting student credit hours (SCH) over a 2-year period was developed at the University of South Florida. A major application of the model would be to estimate the expected loss of upper-level SCH that would occur as a result of reduced lower-level enrollment. Attention was focused on the long-range effect of lower-level enrollment…

An investigation was undertaken of the intercorrelations among residuals obtained by applying regression techniques under two conditions: (1) mean sixth-grade Metropolitan Achievement Test reading scores predicted by mean second-grade Stanford Achievement Test reading scores, and (2) mean sixth-grade reading scores predicted by mean second-grade…

Mounting pressure in the policy arena to improve teacher productivity either by improving signals that predict teacher performance or through creating incentive contracts based on performance--has spurred two related questions: Are there important determinants of teacher productivity that are not captured by teacher credentials but that can be…

The present study examined a longitudinal model of state and trait negative affect as predictors of job-search success. Job-search self-efficacy and job-search intensity were also examined as mediators of the negative affect--job-search success relation. Overall the model offered mixed support for Kasl's (1982) Reverse Causation Hypothesis.…

Although a number of studies have been conducted to examine the status attainment process, very few have focused on differences in educational attainment for black, white, and Hispanic females. The primary purpose of this study was to test predictive models of attainment for these subgroups. Variables considered potentially important to the…

The relative contribution of motivation to ability measures in predicting performance criteria of sales personnel from successive fiscal periods was investigated. In this context, the merits of a multiplicative and additive combination of motivation and ability measures were examined. The relationship between satisfaction and motivation and…

Describes a circulation model for academic research libraries which uses the mixed Poisson model, incorporating ageing of library materials, to predict future use of monographs and to suggest weeding procedures based on frequency of circulation. Longitudinal studies are examined and statistical details are appended. (Author/LRW)

Major findings and prediction models resulting from longitudinal research are presented. Discussed are the study design; variables, trends, and profiles; a follow-up study; and implications and policy recommendations. A summary model designed to explain this phenomenon is given. (CW)

The principal objective of this five-year longitudinal study was to determine the efficacy of employing the Omnibus Personality Inventory (OPI) and the American College Testing (ACT) program scores in designing a predictive model for identifying entering community college freshmen students' propensity to fall into one of three categories:…

This paper reports a model of the impact of teacher behavior on student achievement. Estimates of the model's efficiency are obtained and its utility tested on a second set of data. Methodological and theoretical frameworks are from sociologists interested in contextual affects phenomena. Data were collected from 374 students during 1971-73. Using…