Experiments that assign intact groups to treatment conditions are increasingly common in social research. In educational research, the groups assigned are often schools. The design of group-randomized experiments requires knowledge of the intraclass correlation structure to compute statistical power and sample sizes required to achieve adequate…

This paper analyses the effects of manipulating the cognitive complexity of L2 oral tasks on language production. It specifically focuses on self-repairs, which are taken as a measure of accuracy since they denote both attention to form and an attempt at being accurate. By means of a repeated measures design, 42 lower-intermediate students were…

Having low domain knowledge is a significant constraint when using the Internet. This study examined the effectiveness of three potential supports for learners with low domain knowledge, including having plenty of time to search the Internet, using notes taken during the search when writing an essay about the topic, and having high levels of…

Early adolescents make early career decisions in the form of curriculum choices for high school, and these choices can influence future postsecondary education and career paths. This exploratory study examined relationships between school and demographic variables and 522 eighth graders' choices of high school academic tracks. Analysis of variance…

This study details the enactment of attendance laws for black pupils in Missouri and describes their effect by citing examples from two counties: St. Louis County and Polk County. The study is based on a review of primary sources yielding quantitative and qualitative data reported during the first 40 years of the attendance laws. A study of…

The research reported in the current article studies the impact of learning in asynchronous discussion groups on students' final exam scores and levels of knowledge construction. Multilevel analyses were applied to uncover the specific influence of student, group and task variables. The results indicate that the impact of student characteristics…

Correlational methods are compared to an alternative method based on decision theory and logistic regression for providing validity evidence for college admissions and course placement criteria. The advantages and limitations of both methods are examined. The correlation coefficient measures the strength of the linear statistical relationship…

Although the field of statistics is receiving increasing recognition in the media and everyday life, concern continues about the quality of statistical education and statistical analysis and the application of statistical methods. This paper focuses on three areas of concern: (1) the quality of data, especially missing data; (2) the interpretation…

An analysis of the science and technology collections at Carnegie Public Library of East Liverpool, Ohio was undertaken to obtain more thorough knowledge of these areas of the collection before collection development prioritization was made. The entire shelflist from Dewey classification number 500 through 629 was reviewed using the automated…

This study examines whether a recommended list of videos and a video display in a community college library cause the circulation of these items to increase, as previous research has shown. During a 10-week pretest period, the circulation of a sample of the videos in the 800s section of the Educational Resources Center at the Columbus State…

This report describes a research study designed to adopt a predominantly quantitative approach to investigating three related aspects of oral fluency: fluency improvement, correlation between subjective judgments and objective counts, and variation of fluency in different speech interactions. Subjects were 15 English as a foreign language (EFL)…

This book discusses the motivations that cause adults to go to the public library. It is grouped into eight sections concerning: (1) the research methodology and results used to determine four motivators that were good predictors of library use; (2) the development of library research; (3) several characteristics of library users in terms of…

Factor analysis and Rasch measurement are compared, showing how they address the same data with different interpretations of numerical status. Both methods use the same estimation method, with different measurement models, and they solve the same problem, with different utility. Factor analysis is faulted for mistaking stochastic observations of…

The PRODIGY/EBL system [Minton88] was one of the first works to directly attack the problem of strategy utility. The problem of finding effective strategies was reduced to the problem of finding effective rules. However, this paper illustrates limitations of the approach. There are two basic difficulties. The first arises from the fact that the…

Educational practitioners tend to resist or avoid doing educational research primarily for two reasons: their prior experience with statistics, computers, and research design has produced insecurity and anxiety; and, they have acquired a basic misunderstanding of the nature and purpose of research. Good research should be both technically sound…