It is twenty years since the first symposium on research in chemical education was held at the American Chemical Society meeting in St. Louis in 1984. Over the course of two decades, the number of people who have devoted their careers to doing research on the teaching and learning of chemistry has increased significantly. There have also been significant developments in the methodology for doing research in this area and in the sophistication of the questions being investigated. This paper tries to summarize some of what the author has learned while working with graduate students pursuing research-based M.S. and/or Ph.D. degrees in chemical education over the last 20 years. It describes the three fundamental elements of a good research study-the theoretical framework, the methodological framework, and the guiding research questions-and examines the process by which the choice of theoretical framework is made.
Fundamental Assertion about Research DesignThere is general agreement among individuals who teach graduate courses on educational research that a good Ph.D. dissertation proposal contains three fundamental components: A theoretical framework upon which the research will be built; a set of guiding research questions that are consistent with the theoretical framework, which the research will try to answer; and a methodology that is appropriate for probing the guiding research questions. This is the order in which these components might be described in the proposal, but it isn't the order in which the elements are generated. The first step toward a research proposal often involves the construction of a draft of the guiding research questions.
Guiding Research QuestionsThe most fundamental assertion about guiding research questions is also the most obvious; it is difficult to find answers to questions you don't ask. You can't base a study on the assumption that you'll just "observe what happens."Research questions not only can but should evolve over the course of a study. Indeed, our experience suggests that when changes do not arise in the research questions during the course of a study, we've probably not asked the right question. To illustrate how research questions evolve during a study, let's look at the work of David Gardner, whose Ph.D. dissertation was entitled "Learning in Quantum Mechanics" (1). In his dissertation, Gardner notes that his original question was "How do students learn quantum mechanics?" He then points out that the simplistic answer was: "Not very well." Unfortunately, this answer provides no insight into the problems students encounter with quantum mechanics or how to correct them. The guiding research questions were, therefore, refined and narrowed as the study evolved.With time, his work became directed by three questions. The first question-What are the experiences of students learning quantum mechanics?-came from one of the theoretical frameworks for his study: phenomenography. The second question-What conceptual difficulties do students have with quantum mechanics?-came from the o...