In the educational research literature alpha, the a priori level of significance, and p, the a posteriori probability of obtaining a test statistic of at least a certain value when the null hypothesis is true, are often confused. Explanations for this confusion are offered. Paradoxically, alpha retains a prominent place in textbook discussions of…

A review of model-selection criteria is presented, suggesting their similarities. Some problems treated by hypothesis tests may be more expeditiously treated by the application of model-selection criteria. Multivariate analysis, cluster analysis, and factor analysis are considered. (Author/GDC)

Discussion of variables that affect successful completion of external degree programs focuses on a study that investigated the association between learning style and persistence among students from the University of Wisconsin System Extended Degree Programs. Literature on distance education is reviewed, and results of the study are analyzed. (35…

Discussion of computer-based instruction and animation focuses on a study of undergraduates that investigated the effects of two computer-based instructional strategies, visual display and feedback type, on teaching how to troubleshoot electronic circuits. Time spent on various components of the program is also examined. (35 references) (LRW)

Describes a study that examined the extent to which different levels of instructional control and varied learner characteristics affected performance and time on task, using interactive video in a college biochemistry course. Prior knowledge and learner internality/externality are discussed, and interaction between learner ability and…