Tests of statistical significance are insufficient for generating sufficient grounds to infer the presence or absence of a phenomenon. To avoid misuse of observed statistical significance levels as measures of scientific and practical importance, effect size can be used to interpret the meaning of effects. (Author/RM)

This article discusses a study undertaken to evaluate self-instructional teacher training materials used at an inservice teacher workshop for mastery teaching. Finds from a survey of the 17 participating teachers indicated they valued many elements of the strategy and that they would adopt parts of the mastery teaching strategy for use in their…

Reviews the information-processing approach to problem solving to apply research findings to cooperative problem solving in social studies classes. Provides examples of how experts and novices solved problems in a study on domestic Soviet affairs. Delineates a problem-solving instructional strategy by explaining nine guidelines that employ…