The accuracy of estimating test means for groups of twelfth-grade students by the item-sampling technique was examined. The subjects were from 35 twelfth-grade schools participating in the National Longitudinal Study of Mathematical Abilities. Half of the students in each school were assigned to a treatment condition where they took a complete…

A numerical procedure is outlined for obtaining an interval estimate of a parameter in an empirical Bayes estimation problem. The case where each observed value x has a binomial distribution, conditional on a parameter zeta, is the only case considered. For each x, the parameter estimated is the expected value of zeta given x. The main purpose is…

The technique of analysis of covariance is examined for its relevance to educational and psychological investigations. A study of the arithmetic procedures, history, and statistical properties shows that, though the concepts are relevant to many data collection designs, the customary calculations are often inappropriate. Some suggestions are made…

The intent of this experimental program is to test the impact of an assistance system on issues such as work incentive, cost of benefits, administrative costs, and other corollary issues. The structure is to provide assistance that increases as earned income declines, and decreases as earned income increases. Unlike the President's Welfare Reform…

This survey analyzed the attitudes and educational and occupational patterns of 1969 high school graduates from vocational programs. Over half of a stratified random sample of nearly 3,000 graduates responded to the questionnaire after four followups. Summary data were grouped into five categories: (1) geographic distribution, (2) general…

The procedure of item sampling was employed to reduce the time expenditure of participants when responding to a questionnaire concerned with the implementation of an innovative elementary school project. Approximately 50 student teachers and 42 regular classroom teachers responded to one of two forms of the questionnaire. There was a total of 103…

Student's empirical sampling approach is used to assess the magnitude of the sampling errors of statistics describing a recursive causal model. The data were gathered with four complex sample designs commonly used in educational surveys. Jackknife and half-sample error estimates are applied to the data. (Author/CTM)

An "inference can" is described, with two games that allow students to observe and predict events, define population, and draw samples. (MP)

A set of Tests of Scientific Thinking were developed for possible use as criterion measures in research on creativity. Scores on the tests describe both quality and quantity of ideas produced in formulating hypotheses, evaluating proposals, solving methodological problems, and devising methods for measuring constructs. (Author/CTM)

The diversity among interpretations of single items in personality questionnaires has been noted previously. Using adjectives from the Adjective Check List (ACL), the study sought evidence bearing on these questions: Does such diversity make the responses to an item not comparable across subjects? If so, what are the implications for scores based…

This paper offers some of the first empirical research into the actual conditions affecting learning in one-teacher schools. It examined four central issues: the breadth and quality of the curriculum, patterns of friendship, economic constraints, and the importance of the school in the social life of the community. (Author/RK)

Concepts and methods suggested by cognitive psychology and recent experimental studies of the perception of duration have been employed in this research of judgments of historical duration by children aged between 8 and 15 years. Results indicate a developmental sequence in forms of historical temporal awareness. (Author/RK)

It is difficult to conduct randomized field experiments. In the past decade, the use of alternative randomization plans and incentives has contributed to their operational feasibility; legal, ethical, and professional arguments for experimentation have matured; and expectations have become better aligned with practical constraints that are likely…

Research is reviewed on the interaction patterns of individuals using augmentative and alternative communication systems. Major findings and limitations of interaction studies are highlighted, focusing on methodological approaches, subjects, partners, contexts and sampling procedures, and measures and data analyses. Directions for future research…

Presents suggestions for making statistical topics interesting and relevant in the classroom. For each of the topics, a general discussion is followed by a suggested teaching sequence with specific activities and examples. (PK)