Many important educational situations such as traumatic brain injury among preschoolers, school gun violence, preadolescent eating disorders, and adolescent suicide happen relatively infrequently. In this article, the authors explain why mixed methods research designs offer more meaningful empirical results than do qualitative or quantitative…

This article presents two methods of estimating a study's replicability that researchers should consider reporting along with their statistical significant and effect size findings. One method of estimating the replicability of the findings deals with replication in the exact same system. The second method, which may contain subjective probability…

The personal and teaching efficacy of 39 teachers in a graduate education course was assessed before and after 36 hours of exposure to a learner-centered model of instruction, in which instructional strategies and activities were matched to participants' knowledge and learning styles. Regression analysis indicates positive intervention effects for…

Carolyn Evertson discusses the importance of forging links between the teacher preparation institution and the world of practice; skills that make a good mentor; the inaccessibility of educational research and its inability to affect educational policy; new directions in classroom management; and the need to work with students, parents, and…

In a conjoint-analysis consumer-preference study, researchers must determine whether the product factor estimates, which measure consumer preferences, should be calculated and interpreted for each respondent or collectively. Multiple regression models can determine whether to aggregate data by examining factor-respondent interaction effects. This…

Many interactions are found with categorical variables but few with continuous variables, suggesting that, from a mathematical point of view, investigating interactions with continuous variables is less powerful than with categorical variables. This issue is analyzed from three other points of view: study design, measurement of the independent…

Slavin discusses cooperative learning and the "best evidence" approach to research synthesis. Critiques Benjamin Bloom's mastery learning, Madeline Hunter's program, and expert-novice studies. Introduces his current program called "Success for All," which targets early childhood education and stresses success the first time children are taught.…

Anita Woolfolk, author of a best-selling educational psychology textbook, discusses format and important concepts in her text; application of educational psychology to teacher education; role of research in teacher education; her research in school climate and teacher efficacy; and her personal lifestyle. (KS)

Introduces the basic concepts of chaos theory and chaos modeling. Relates chaos theory to qualitative research and factor analysis. Describes some current research in education and psychology using chaos theory. Claims that the philosophical implications of chaos theory have been misapplied in practical terms. (KS)

A professor and educational researcher at Stanford University discusses the evolution of "normal schools" of teacher preparation into the teacher education programs of today, advocates the integration of content material into teacher education, and explains the concept of reflection in teaching. (KS)

Presents situations in which researchers can use the general linear model to uncover reasons for discrepant effect-size results of meta-analysis of similar studies. Situations include similarly labeled treatments or participants differing in important ways, treatment effectiveness varying by subject aptitude or situational variables, research…

Meta-analysis synthesizes related research by considering three major factors: sample size, magnitude of significance, and statistical test used. These factors produce an effect size, expressed as a correlation or as a difference between means, divided by the standard deviation. Discusses ways to use effect size when results are not consistent and…