Four TV film versions of the same story were shown to fifth graders; the presentation format of each film varied. Different patterns resulted between initial mental skills and knowledge acquired from each format, depending upon whether the format called upon or supplanted the skill. (Author/GDC)

The present study sought to investigate the outcomes of the mastery instruction approach compared to a nonmastery approach of instruction with varying amounts of feedback being given to students with regard to their responses to multiple-choice test items on mastery tests. (Author)

Sixth-grade students were measured on fluid and crystallized ability, given instructions stressing one of the abilities, and pre- and posttested on a mathematical concept. Results suggest that students with lower general ability benefit most by instruction focused on fluid ability, and students with higher general ability by instruction focused on…