From students to researchers: The education of physics graduate students

This dissertation aims to make two research contributions: (1) In physics education research, this work aims to advance our understanding of physics student learning at the graduate level. This work attempts to better understand how physics researchers and teachers are produced, and what factors support or encourage the process of becoming a researcher and a teacher. (2) In cognitive science research in the domain of expert/novice differences, researchers are interested in defining and understanding what expertise is. This work aims to provide some insight into some of the components of expertise that go into becoming a competent expert researcher in the domain of physics. This in turn may contribute to our general understanding of expertise across multiple domains.;Physics graduate students learn in their classes as students, teach as teaching assistants, and do research with research group as apprentices. They are expected to transition from students to independent researchers and teachers. The three activities of learning, teaching, and research appear to be very different and demand very different skill-sets. In reality, these activities are interrelated and have subtle effects on each other.;Understanding how students transition from students to researchers and teachers is important both to PER and physics in general. In physics, an understanding of how physics students become researchers may help us to keep on training physicists who will further advance our understanding of physics. In PER, an understanding of how graduate students learn to teach will help us to train better physics teachers for the future.;In this dissertation, I examine physics graduate students' approaches to teaching, learning, and research through semi-structured interviews. The collected data is interpreted and analyzed through a framework that focuses on students' epistemological beliefs and locus of authority. The data show how students' beliefs about knowledge interact with their learning, teaching, and research activities. In many cases, their perception of the learning, teaching, or research environment influences their choice of learning, teaching, or research approach. Physics graduate students learn "the language of physics" from the core courses, but don't learn many transferable research skills from taking courses. Constrained by the teaching environment, many graduate students are not motivated to teach as teaching assistants. Some finishing graduate students have clearly become confident and able researchers, while others remain dependent on their advisors for even the simplest direction. The data also show that it is possible for a single graduate student to hold very distinct beliefs about learning and teaching between classroom and research settings. It is possible for a well-motivated graduate student to take unfavorable approach toward learning when the environment does not support learning for deep understanding.;This dissertation attempts to distill out aspects of success in the graduate program and identify features of positive experiences that help graduate students to transition from students to competent and confident researchers. The data suggest that having graduate students treated as legitimate participants is the vital element for them to build their confidence as researchers and teachers.