Cognitive preferences of 177 able, science-oriented high school students who participated in a secondary science training program at the University of Iowa in the summer were studied. A Biology Cognitive Preference Test (BCPT) was administered, in which 20 items required ranking and 20 items required rating on a four-point scale. The items were…

Findings reveal that students who are skillful in perceptual restructuring attain significantly higher mean achievement scores in science, in knowledge of science, and in the ability to apply what has been learned in unfamiliar contexts than students with low structuring ability. (Author/MA)

Investigated the efficacy of an instructional program designed to induce students to construct a mental scheme in which experimental design and natural experiments are understood as facets of the same problems and which incorporates a general solution procedure applicable to both. Results show a highly significant posttest achievement by the…