Broad trends in occupational employment have been projected fairly accurately by the Bureau of Labor Statistics and significant improvements have been made in procedures for developing projections. However, accuracy has not increased over time. (JOW)

Discusses the objectives of the study of Economics, which include anticipating future events and explaining current developments. The article points out that an acquaintance with past economic developments enhances the ability to predict the future. Research into the reasons for economic events often can uncover the multiple causes of a given…

Presents: "Prices of United States and Foreign Published Materials"; "Book Title Output and Average Prices"; "Book Sales Statistics, 1998"; "United States Book Exports and Imports: 1998"; "International Book Title Output: 1990-96"; "Number of Book Outlets in the United States and Canada";…

We consider power calculation in structural equation modeling with data missing completely at random (MCAR). Muth?n and Muth?n (2002) recently demonstrated how power calculations with data MCAR can be carried out by means of a Monte Carlo study. Here we show that the method of Satorra and Saris (1985), which is based on the nonnull distribution of…

A number of important applications require the clustering of binary data sets. Traditional nonhierarchical cluster analysis techniques, such as the popular K-means algorithm, can often be successfully applied to these data sets. However, the presence of masking variables in a data set can impede the ability of the K-means algorithm to recover the…

The power output achieved at peak oxygen consumption (V[O.sub.2]peak) and the time this power can be maintained (i.e., Tmax) have been used in prescribing high-intensity interval training. In this context, the present study examined temporal aspects of the V[O.sub.2] response to exercise at the cycling power that output well trained cyclists…

This study examined the access of books among six communities in the greater Los Angeles area: Brentwood, Beverly Hills, South Central, Watts, East Los Angeles, and Compton, participants included 60 students, ages 7 to 12 years, selected from each community. The survey examined access to books in the home, classroom library, school library and…

This article proposes an item exposure control method, which is the extension of the Sympson and Hetter procedure and can provide item exposure control at both the item and test levels. Item exposure rate and test overlap rate are two indices commonly used to track item exposure in computerized adaptive tests. By considering both indices, item…

This article reconsiders the issue of clinical versus statistical prediction. The term clinical is widely used to denote 1 pole of 2 independent axes: the observer whose data are being aggregated (clinician/expert vs. lay) and the method of aggregating those data (impressionistic vs. statistical). Fifty years of research suggests that when…

The purpose of this Information Aid is to alert school officials to changes and revisions in the Consumer Price Index (CPI), to familiarize them with differences between the former CPI and the new and revised indexes, to demonstrate how the U.S. Bureau of Labor Statistics (BLS) computes changes in the CPI, to indicate appropriate uses of the CPI,…

Anthony Bryk is president of the Carnegie Foundation for the Advancement of Teaching. Previously, he held the Spencer Chair in Organizational Studies in the School of Education and the Graduate School of Business at Stanford University as well as the Marshall Field IV Professor of Urban Education and Sociology at the University of Chicago. Dr.…

This article reports findings from a case study of district leadership for school, family and community partnerships in a suburban district in the mid-Atlantic region of the USA. Analyses suggest that the case district's family and community involvement specialist has been successful in using different kinds of data to achieve a variety of goals…

"Projections of Education Statistics to 2018" is the 37th report in a series begun in 1964. It includes statistics on elementary and secondary schools and degree-granting institutions. Included are projections of enrollment, graduates, teachers, and expenditures to the year 2018. This is the first edition of the "Projections of…

Past estimates of the effect of family income on child development have often been plagued by endogeneity and measurement error. In this paper, we use two simulated instrumental variables strategies to estimate the causal effect of income on children's math and reading achievement. Our identification derives from the large, non-linear changes…

Written comments on student evaluations often seem idiosyncratic, lacking the power of numerical statistical data. These statements, however, may sometimes reveal intellectual challenges common to novice learners in our disciplines. Instructors can use these insights as part of a scholarly approach to teaching, making meaningful adjustments to…