Exploratory factor analysis (EFA) is a frequently used multivariate analysis technique in statistics. Jennrich and Sampson (1966) solved a significant EFA factor loading matrix rotation problem by deriving the direct Quartimin rotation. Jennrich was also the first to develop standard errors for rotated solutions, although these have still not made…

A simulation game of strategy relating to alternate confession choices of two prisoners is described. The game, Prisoner's Dilemma, is designed to help participants learn about trust, cooperation, competition, intergroup dynamics, and their own life role and feelings. Three choices are offered at the beginning of the game to two prisoners, held…

The 7th International Conference on Education Data Mining held on July 4th-7th, 2014, at the Institute of Education, London, UK is the leading international forum for high-quality research that mines large data sets in order to answer educational research questions that shed light on the learning process. These data sets may come from the traces…