The research articles in this volume cover timely quantitative psychology topics, including new methods in item response theory, computerized adaptive testing, cognitive diagnostic modeling, and psychological scaling. Topics within general quantitative methodology include structural equation modeling, factor analysis, causal modeling, mediation, missing data methods, and longitudinal data analysis. These methods will appeal, in particular, to researchers in the social sciences. The 80th annual meeting took place in Beijing, China, between the 12th and 16th of July, 2015. Previous volumes to...

This volume provides a succinct up-to-date summary of global research on principal instructional leadership as it has evolved over the past 50 years. The PIMRS is the most widely used survey instrument designed for assessing instructional leadership for research and practice.