This study shows that residual variation can cause problems related to scaling in exponential random graph models (ERGM). Residual variation is likely to exist when there are unmeasured variables in a model--even those uncorrelated with other predictors--or when the logistic form of the model is inappropriate. As a consequence, coefficients cannot…

Data analysis is critical to educational planning. Determining the number of school leavers is crucial for a school board when planning for interventions and supports. In researching the number of early school leavers in the province of Prince Edward Island, the method in which the data were reported affected the rates. Two critical considerations…

Four potential biases incurred by using a sample of wives of male respondents as a sample of women for sex comparisons of the occupational attainment process were examined and empirically assessed. Using data from the Wisconsin longitudinal study of high school seniors, the extent and nature of two potential biases were considered: (1) a sampling…

This study takes an in-depth look at the changes that have taken place, over the last ten years, in counselor certification requirements in the United States. A diagnosis of these changes is made in an attempt to show their effect on counselor training programs and to identify patterns which have implications for future planning and training of…

Addresses many of the statistical and epidemiological flaws identified in previous studies of campus student suicides. Analyses, based on longitudinal data covering 261 student suicides, reveal a significantly higher suicide risk for students 25 and over, although the overall student suicide rate is one half of the national rate. (RJM)

Global economic transformations have never been as dramatic as in the twentieth century. Most countries have experienced radical changes in the standards of income per capita, technology, fertility, mortality, income inequality and the extent of democracy in the course of the past century. It is the goal of many disciplines--economics, history,…

In a longitudinal study, subject attrition constitutes a potential threat to the usefulness of data collected from subjects remaining in later waves of the study. If attrition is selective, then the sample at later waves of the study may be representative of a different population than that represented at the outset of the study. This study…

Analyzed data from two data sets in the National Longitudinal Study of Adolescent Health Wave I to identify discrepancies between in-school questionnaire and in-home interview results. Identified a group of "jokester" adolescents likely to have identified themselves as adoptees, when they were not. Found evidence suggesting that this…

This study reports various aspects of the analyses carried out on the longitudinal data reported in a previous study (PS 007 345) for determining the general growth patterns and growth velocity of mental and motor development. Preliminary analyses focused on the selection of the growth curve, its evaluation in the 208 individual cases, and the…

During round 16 of the National Longitudinal Survey of Youth (NLSY), 900 NLSY sample members were randomly assigned to be interviewed about the period since their round 14 interview. Their responses were compared to those of approximately 8,000 NLSY sample members who were assigned to be interviewed about the 1-year period since their round 15…

The problem of the appropriate comparison group for bereavement studies is discussed. The use of the retrospective pretest design is illustrated through a longitudinal study of bereavement outcome following pregnancy loss, involving 138 bereaved women and a comparison group of 215 currently pregnant women. (SLD)

This study found that accuracy in predicting the out-of-home placement of children with severe disabilities increased little in a large cross-sectional sample (n=5,992) over a smaller semilongitudinal sample (n=141). Factors such as age, adaptive and maladaptive behavior, and ethnicity are discussed. (Author/JDD)

The methods and findings of studies of the effects and value of preschool education and compensatory education programs, such as Head Start, are reviewed. After introductory comments on ideological controversies and on terminology, section 1 focuses on evaluative studies of the immediate and long-term effects of preschool education and early…

In the research paper considered, Stahl and Miller compare the effectiveness of whole language/language experience programs versus basal reader approaches. The article is criticized for its lack of longitudinal data, alternative interpretations, and information concerning the broad goals of whole language approaches. (TJH)

With a sample of 531 children measured on 79 variables, a series of discriminant function predictions of school placement were computed to compare the results of selected alternative procedures for treating missing data in multivariate data analyses. Procedures included elimination of cases with missing data as well as methods for substituting…