Fourth and fifth grade students (N=171) participated in three reading tasks to assess time needed for learning, time spent in learning, and time allocated for learning. Results indicated that spending and/or allocating insufficient learning time have a direct negative effect on achievement. (BS)

The Learning for Mastery approach is clearly more effective than traditional instruction, but individualized programs are better than group-based ones. Students master more objectives with mastery learning because their level of participation is higher. (Author)

The causal effects of time spent in learning (TSL) and time needed for learning (TTL) on the reading and spelling achievement of 171 fourth and fifth grade students were investigated. TTL contributed significantly to achievement, and its direct effect was greater than TSL. Results also support a Carroll's learning model. (Author/BS)

Describes a study of college students that examined the instructional effect of visual and verbal metaphors in facilitating student achievement of different educational objectives. The effect of students' verbal ability and the amount of time they spent interacting with their respective instructional modules were also measured. (Author/LRW)

A study of undergraduate students investigated whether different rehearsal strategies are more effective in facilitating achievement, whether certain rehearsal strategies require learners to spend more time interacting with instructional content, and whether verbal or visual testing requires students to spend more time processing and responding to…

This meta-analysis of 49 comparative studies shows that mastery testing has positive effects on student learning, but the size of effect depends on the stringency of the criterion used and the degree of experimental control. The effects of instructional time, student attitudes, and differences in ability levels are also addressed. (Author/LRW)