Linear regression examines the relationship between one or more independent (predictor) variables and a dependent variable. By using a particular formula, regression determines the weights needed to minimize the error term for a given set of predictors. With one predictor variable, the relationship between the predictor and the dependent variable…

Analyzes some properties of the correction for range formula in the three variable case, (x, y, and z). (AG)

Psychometric data from two dyslexic groups were factor analyzed to identify dyslexic subtypes. Literacy, intelligence, auditory dysfunction, and visual/verbal dysfunction factors were identified. Results were discussed in the context of previous subtype classification studies. (Author/MJL)

A survey of articles in the "Journal of Applied Behavior Analysis" (1968-1980) demonstrated that the majority of articles published do not use any assessment of the actual occurrence of the independent variable and a sizable minority do not provide operational definitions of the independent variable. The feasibility and utility of ensuring the…

A high correlation between predicted and criterion values in cross-validation may not always be a sufficient indicator of goodness of prediction. An alternative indicator of goodness of prediction is reviewed in terms of what kind of prediction is sought. (Author)

A public radio audience was surveyed to test the hypothesis that a relationship exists between innovativeness and public radio listening. Rather than supporting the hypothesis, findings indicate that the entertainment and information elements of public radio are the primary attractions for the public radio audience. (MER)

Reports the findings of a study of four newspaper markets which showed that age and income were significantly related to readership as well as to satisfaction with a newspaper. (Author/FL)

True effects of the joint dichotomization of two variables are explored, and implications of the correct formulation for generalizations of the results obtained by S. E. Maxwell and H. D. Delaney (1993) are examined. The inflation of apparent effects can occur when only one or two predictor variables is dichotomized. (SLD)

Examined the frequency and magnitude of specific variables perceived to have affected U.S. Olympic athletes' performance. Respondents perceived that performance was influenced by: performance variables (e.g., preparation for distraction); team variables (e.g., strong cohesion); coaching variables (e.g., coaching expectations); family-friend…

Explores the relationship between alcohol use prior to suicide among American Indian decedents in New Mexico for the years 1980 through 1998. Alcohol was detected in 69% of all suicides of American Indians with some variance by major tribal cultural groups. This is higher than in suicides among the overall New Mexico population (44.3%). (Contains…

This study examines the prevalence of suicidal ideation and suicide attempts among the homeless and what aspects of homelessness predict suicidality. A sample of 330 homeless adults was interviewed, with 61% reporting suicidal ideation and 34% attempted suicide. Childhood homelessness and periods of homelessness longer than 6 months were found to…

Used 9-point clinical rating scale to assess severity of hopelessness in 141 patients hospitalized with suicide ideation. Followed patients from 5 to 10 years; 10 eventually committed suicide. Mean hopelessness rating for patients committing suicide was significantly higher than that for patients not committing suicide. Cutoff score of 6 or above…

A total of 399 individuals completed a lethal behaviors scale and a measure of death anxiety, which were found to have no significant correlation. Predictors of lethalness included doing dangerous things for the fun of it and having ever driven a motorcycle. The most lethal individuals were young, male, and less educated. (Author/ABL)

Bootstrap methodology is presented that yields approximations of the sampling variation of redundancy estimates while assuming little a priori knowledge about the distributions of these statistics. Results of numerical demonstrations suggest that bootstrap confidence intervals may offer substantial assistance in interpreting the results of…