This study looks at the effect of objective referenced formative diagnostic testing followed with remediation assignments on three cognitive levels of science achievement and the attitudes of university students, and determines if the effects of treatment were consistent across student locus of control levels. The subjects of the study were 60…

Investigated the influence of locus of control and diagnostic testing with prescribed remediation on immediate and retained science achievement of preservice elementary education majors (N=43) during three introductory biology units. Findings, among others, show no locus of control times treatment interactions and differences in achievement…

Reported are results of a replicated study designed to examine the relationships between university students' entry characteristics and achievement in biological science. Variables selected for examination included scholastic aptitude test (SAT) scores (quantitative and verbal); locus of control; grade point average; and achievement motivation.…

Reported is a study that explores the effect on student achievement of diagnostic-prescriptive instructional strategies on preservice elementary education majors (N=43) enrolled in an introductory biology course. Factors of pre-treatment achievement and locus of control were analyzed as well. Units on Mendelian genetics, modern genetics, and…

Reported are results of a study designed to replicate a study at North Carolina State University which investigated the effectiveness of a diagnostic/prescriptive system for increasing the science achievement of university students and examined the relationship between selected student characteristics and participation in voluntary diagnosis.…

Results are reported of a study that: (1) examined the relationships between university students' entry characteristics and achievement in biological science; and (2) assessed the effectiveness of interactive instructional video-tapes in improving science achievement. Among the variables examined as likely to predict achievement were scholastic…

Reported is a study designed to determine the effects of diagnostic testing followed by prescribed remediation on the immediate and retained science achievement of middle school students, and to determine if effects of treatment were consistent across students' race and locus of control (LOC) levels. Three intact seventh-grade science classes were…

This paper summarizes and compares three studies which used different approaches to diagnostic/prescriptive instruction: (1) voluntary diagnosis and remediation; (2) required diagnosis with no formal remediation; and (3) required diagnosis with prescribed remediation. It includes an examination of the influence of selected student entry…

Subjects were assessed for locus of control and experienced either: no diagnosis; diagnosis; or, diagnosis and remediation. Immediate achievement was measured twice during the experiment; retention was measured 30 days later. Findings suggest that diagnostic or diagnostic/remedial instruction is effective in increasing middle school science…