Through the lens of science capital, this research aims to detect the key factors and their main effects in identifying students with science-related career expectations. A machine learning approach (i.e., random forest) was employed to analyze a dataset of 519,334 15-year-old students from the Programme for International Student Assessment (PISA)…

This study investigated exam achievement and affective characteristics of students in general chemistry in a fully-randomized experimental design, contrasting Peer-Led Team Learning (PLTL) participation with a control group balanced for time-on-task and study activity. This study population included two independent first-semester courses with…

Results of modifying mastery learning strategy to two diagnostic cycles with high school chemistry students (N=156) indicated that achievement of mastery learning students was significantly greater than that on nonmastery learning students. Attitudes toward science/science instruction were not significantly different but were positive in both…

Investigated relationships among college students (N=76) science achievement, engaged time (observed and perceived), personal characteristics of academic aptitude, reasoning ability, attitude toward science, and locus of control. Among the results reported are significant relationships between engaged time measures and achievement, and between…

Investigated if relationships existed between middle school students (N=105) science concept structure interrelatedness competence and their time on task, science achievement, scholastic aptitude, previous experience with concept structure interrelatedness, attitudes toward science, interest in science, science curiosity, and self-concept of…