Contrasts are statistical procedures for asking focused questions of data. Compared to diffuse or omnibus questions, focused questions are characterized by grea

Statistical Power Analysis is a nontechnical guide to power analysis in research planning that provides users of applied statistics with the tools they need for

Doing Meta-Analysis with R: A Hands-On Guide serves as an accessible introduction on how meta-analyses can be conducted in R. Essential steps for meta-analysis

Under what conditions is a group of scientists rational? How would rational scientists collectively agree to make their group more effective? What sorts of nego

A jargon-free introduction for students and researchers looking to interpret the practical significance of their results.