This article offers five research criteria and their rationale to help researchers avoid problems and to help them improve research. Improving research should improve the quality of science teaching. The treatment of causal hypotheses is stressed. (Author/CW)

Compares experts', advanced students', and novice students' use of genetics knowledge to generate and test hypotheses while solving genetic pedigree problems. Reports that experts identified more critical cues, tested more hypotheses, were more rigorous in the falsification of alternative hypotheses, and were more flexible to their solving…

Showed that integrated science process skill achievement of prospective elementary teachers can be significantly improved by studying self-instructional materials providing instruction in these skills. (MLH)

Examined is how research informs and influences the practice of science education. Discussed are past focuses on treatments, present focuses on students' ideas, and developing styles of research. (YP)

Criticizes the Mitchell and Lawson (1988) report from the viewpoint of individual interview method. Provides Lawson's reply to the comment by showing differences in research philosophy and methods. (YP)