The complexity hypothesis suggests that the hierarchical arrangement of learning tasks is related to the complexity of the task. Using a definition of complexity based on an analysis of the rules governing performance on a task, the present study lent support to the hypothesis. (Author/GDC)

Objective rules of sequencing were applied to elementary level instructional material to determine their effect on time, errors made during instruction, and posttest errors. Results are discussed in terms of the application of the rules to various types of instructional material. (Author/BJG)

Educational psychology undergraduates were taught in alternating instructional sequences; one sequence was a conceptually oriented lecture followed by a factually oriented self-study, the other sequence was a factual self-study followed by a conceptual lecture. Results more closely supported the predictions derived from the educational set…