In this interview, we discuss my early uses of meta-analytic procedures, first to combine "p"-values and then to combine effect sizes as well. My interest in quantifying the magnitude and the statistical significance of the effect of interpersonal expectations probably grew out of the following: (1) a long-held interest in the concept of…

Mathematics education has benefited from qualitative methodological approaches over the past 40 years across diverse topics. Although the number, type, and quality of qualitative research studies in mathematics education has changed, little is known about how a collective body of qualitative research findings contributes to our understanding of a…

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…

This paper presents comments on the article by D. Westen and J. Weinberger, which stated that '...science can be viewed as the history of confirmatory biases" (p. 609). This comment's authors prefer an alternative formulation: The history of science can be viewed as a constant and largely successful struggle to overcome confirmatory biases.…