This study assessed teachers' understanding about the nature of scientific inquiry (NOSI) and whether this understanding was reflected in their students' responses. The data were collected through the 'Views About Scientific Inquiry' (VASI) questionnaire, a reliable tool for assessing understanding about the NOSI. The sample included science…

Proactive preliminary minimum sample size determination can be useful for the early planning stages of a latent variable modeling study to set a realistic scope, long before the model and population are finalized. This study examined existing methods and proposed a new method for proactive preliminary minimum sample size determination.

Shortly after we published "Addressing Flawed Research in Developmental Education" (2012) in the "Journal of Developmental Education," Thomas Bailey, Shanna Smith Jaggars, and Judith Scott- Clayton from the Community College Research Center (CCRC) wrote a response rebutting several of our claims. Though their response corrects…

This paper provides evidence that confirms the results of previous studies that teacher unionism produced relatively small wage gains during the early 1970s, but it also shows that union gains increased substantially in the late 1970s. (Author/CT)

A table of critical values is provided for the simple and accurate testing of the step-down procedure proposed by R. E. Welsch (1977) and the Shaffer-Welsch procedure (1979, 1981). Advantages and use of the table are presented and discussed. (Author/SLD)

This study examined the problem of interpreting effect sizes in single case research. Nine single case analytic techniques were applied to a convenience sample of 77 published interrupted time series (AB) datasets, and the results were compared by technique across the datasets. Reanalysis of the published data helped answer questions about the…

The catalogue of conceptions that students are said to have concerning the different topics of the science curriculum is so great that some authors consider this line of research to be exhausted. However, others insist on the need to re-examine students' conceptions in order to better describe them using new theoretical, contexts and research…

Provides a brief overview of quantitative estimates of Colombian emigration including a discussion of how estimates were prepared. Concludes that estimates of international migration from Colombia are inflated and that such migration is not as significant as some observers claim. (CMG)

A noncomputerized study of the journal title usage by the clients of the Extension Division of the University of Oklahoma Health Sciences Center Library showed that its validity increased in direct proportion to the number of relevant parameters. Such studies should include both numbers of requesters and numbers of requests. (Author)

The concept of statistical significance is explained, with specific numerical illustrations. (MNS)

New data from the Current Population Survey indicate that women have fewer years in their current occupations than men, a factor which affects the earnings disparity. (Author)

This article reviews data from the 1979 Staines-Quinn study of job satisfaction levels and contrasts them with data from similar surveys of the same era. The Staines-Quinn study's conclusions differ from conclusions of other studies and the authors examine the possible reasons for this. (CT)

With the increased popularity of qualitative research, researchers in counseling psychology are expanding their methodologies to include mixed methods designs. These designs involve the collection, analysis, and integration of quantitative and qualitative data in a single or multiphase study. This article presents an overview of mixed methods…

Reanalyzes H. Thomas's 1980s data, which used teaching group as the unit of analysis and illuminated some institutional disparities in provision of General Certificate of Education (GCE) A-levels. Uses multilevel analysis to focus on individual students in a hierarchical framework. Among the study institutions, school sixth forms appear less…

Student circulation of books in 43 major academic disciplines were examined for two patterns: (1) the extent to which students majoring in one subject use the books of another and (2) the extent to which books in one subject are read by students majoring in others. Graduate and undergraduate patterns are compared. (Author/JD)