Assess graduate students' basic understanding of core constructs across three major health behavior change theories—Health Belief Model (perceived susceptibility, severity, benefits, barriers, cues to action, self‑efficacy), Theory of Planned Behavior (attitudes, subjective norms, perceived behavioral control, intention), and Transtheoretical Model (stages of change, processes of change, decisional balance, self‑efficacy/temptation). Test definitions, mapping constructs to their respective theories, and simple application to brief case examples.