The debate over the effects of the use of extrinsic reinforcement in classrooms, businesses, and societal settings has been occurring for over 30 years. Some theorists have cautioned against the use of reward, whereas others have found little, if any, detrimental effect. This article examines the debate with an emphasis on data-based findings. The…

In their meta-analysis, Stage and Quiroz (1997) found that group-oriented contingencies yielded the largest effect size of interventions designed to reduce inappropriate behaviors in public schools. However, such procedures may be underutilized for enhancing academic performance and learning. The current article describes how interdependent…

Assessment of adult psychopathology relies heavily on self-reports. To determine how well self-reports agree with reports by "informants" who know the person being assessed, the authors examined 51,000 articles published over 10 years in 52 peer-reviewed journals for correlations between self-reports and "informants" reports. Qualifying…

This article raises some questions about the usefulness of meta-analysis as a means of reviewing quantitative research in the social sciences. When a meta-analytic model for SAT coaching is used to predict results from future studies, the amount of prediction error is quite large. Interpretations of meta-analytic regressions and quantifications of…

Background: The genetic basis of autism has received great attention during the last few years. The psychiatric status of parents of persons with autism has been studied as part of the broad phenotype of autism. Methods: In the current study we examined all studies in which psychiatric difficulties of parents of children with autism were compared…

Gene V. Glass is presently Regents' Professor of both Educational Leadership and Policy Studies and Psychology in Education at Arizona State University. He won the Palmer O. Johnson Award for best article in the "American Educational Research Journal" in both 1968 and 1970. Dr. Glass has also served on the editorial boards of 13 journals and has…

Comments on the article by J. S. Hyde (see record 2005-11115-001), in which Hyde reviewed meta-analytic evidence on gender differences and concluded that most psychological gender differences are in the close-to-zero or small range. The current author notes some omissions from Hyde's review, including the findings through other research large…

This comprehensive meta-analysis on teacher career trajectories, consisting of 34 studies of 63 attrition moderators, seeks to understand why teaching attrition occurs, or what factors moderate attrition outcomes. Personal characteristics of teachers are important predictors of turnover. Attributes of teachers' schools, including organizational…

The article reviews the current status (1993-2007) of psychosocial treatments for children and adolescents who have been exposed to traumatic events. Twenty-one treatment studies are evaluated using criteria from Nathan and Gorman (2002) along a continuum of methodological rigor ranging from Type 1 to Type 6. All studies were, at a minimum, robust…

Universal school-based programs to reduce or prevent violent behavior are delivered to all children in classrooms in a grade or in a school. Similarly, programs targeted to schools in high-risk areas (defined by low socioeconomic status or high crime rates) are delivered to all children in a grade or school in those high-risk areas. During…

Plants are essential to life on Earth and yet are often deemed invisible by the human populace. Botanic gardens are an under-researched educational context and, as such, have occupied a peripheral arena in biology education discussions. This article seeks to readdress this absence and present the case for a more sustained use of informal learning…

This article argues that "transition" offers a limited and outmoded conceptual frame for understanding young people's engagement with work and learning. It draws on two studies of young people to provide insights into the study and work experiences of older and school-aged youth. Our analysis suggests that rather than focussing narrowly…

Professionals in the field of deaf-blindness are challenged to use instructional practices that have been tested using experimental methodology. Single-subject design has been examined as a form of research that assists in substantiating practice. In a review of the literature, the authors identified 54 single-subject studies from 1969 to 2006…

The job satisfaction-job performance relationship has attracted much attention throughout the history of industrial and organizational psychology. Many researchers and most lay people believe that a causal relationship exists between satisfaction and performance. In the current study, however, analyses using meta-analytic data suggested that the…

Recent governments in the United Kingdom have introduced a number of initiatives aimed at improving the literacy levels of children. Policy and practice should be informed by rigorous evidence, and this evidence should be subjected to critical scrutiny. In the present paper the results of a "tertiary" review of systematic reviews in…