As hypothesized, less advanced students benefited most from a high instructional support treatment (personalized system of instruction) used in an introductory calculus course. Furthermore, as level of prior mathematics preparation increased, the achievement differences between the high and low instructional support (lecture) decreased. (Author/CP)

Forty-seven learning disabled and low-level readers were assigned to reading instruction programs on context cue use differing only in extent of student control of determination of errors. Students high in internality benefited more from instruction in which they determined response correctness; students low in internality benefited from…

Learning disabled and slowly developing readers were assigned to reading instruction programs on context cue use differing only in extent of pupil control over determination of errors. Results indicated no main effect for experimental condition. Interaction was found, however, between pretreatment locus of attribution and experimental condition.…

The value-added approach to the assessment of student outcomes examines actual or inferred changes in students' performance over time. It also attempts to separate the net effects of instruction from previous ability or simple maturation. Others may have different definitions of this concept, and this vagueness causes problems. Suggested ways to…