Examines one's fear of crime while walking in the neighborhood, and in one's home. Results showed age was positively associated with fear of crime in the former situation, but slightly negatively associated in the latter. Suggested that the aged may only be more fearful of crime in particularly dangerous situations. (JAC)

Surveyed 126 married couples to study factors related to marital satisfaction. Results showed personality compatibility was a major factor in satisfaction. Individuals whose spouses were more accurate in perceiving their satisfaction and those in relationships with a previous marriage were also more satisfied. (JAC)

Researchers in education and the social sciences make extensive use of linear regression models in which the dependent variable is continuous-valued while the explanatory variables are a combination of continuous-valued regressors and dummy variables. The dummies partition the sample into groups, some of which may contain only a few observations.…

This paper identifies specific problems with stepwise regression, notes criticisms of stepwise methods by statisticians, suggests appropriate ways in which stepwise procedures can be used, and gives examples of how this can be done. Although the stepwise method has been routinely criticized by statisticians, it is still frequently used in the…

Data from records of 99 patients were used to classify cardiac patients as to whether they were likely or unlikely to experience a subsequent morbid event after admission to a hospital. Both a linear discriminant function and a logistic regression equation were developed using a set of nine predictor variables that were chosen on the basis of…

Lord's relatively unknown formula, based on the expected cross-sample, is shown to be superior to either of Wherry's formulas, which are based on the expected universe. (GS)

The first eigenvalue of a correlation matrix indicates the maximum amount of the variance of the variables which can be accounted for with a linear model by a single underlying factor. The first eigenvalue measures the primary cluster in the matrix, its number of variables and average correlation. (Author/RL)

Assuming a multiple linear regression model with q independent variables, a procedure is developed for determining the minimum statistically significant increase in the multiple correlation coefficient when an additional independent variable is considered for regression. The procedure is presented analytically and in table form. Examples are…

Corrections for restriction in range due to explicit selection assume linearity of regression and homoscedastic array variances. A Monte Carlo study was conducted to examine the effects of some common forms of violation of these assumptions. (Author/CP)

Analyzed two prison psychologists' accuracy of predictions of criminality to see how reliably such predictions could be made. Results indicate that the psychologists, using clinical judgment alone, accurately identified a subpopulation significantly more likely to engage in future acts of violence within a one-year follow-up period. (RJM)

Semipartial correlation is one of several ways of determining the relative importance of independent variables in a multiple regression analysis. A veteran teacher of statistics and related topics explains his reasons for avoiding semipartial correlations. (SV)

Describes a study that analyzed variables in order to identify accurate predictors of individuals' use of the Internet and e-commerce. Results of survey research and a neural network identifies gender, overall computer use, job-related use, and home access as important characteristics that should influence use of the Internet and e-commerce.…

Discusses the inclusion of contextual information in indexing and retrieval systems to improve results and the ability to carry out text analysis by means of linguistic knowledge. Presents research that investigated whether discourse variables have an impact on information and retrieval and classification algorithms. (Author/LRW)