Assess graduate-level understanding of core concepts in mixed-methods research design applied to interdisciplinary public health studies, including design types (convergent, explanatory, exploratory), strategies for integrating qualitative and quantitative data, sampling and sequencing decisions, measures of validity and rigor across methods, ethical and collaborative considerations for interdisciplinary teams, and translating integrated findings for policy and practice; items will test conceptual definitions, design selection rationale, basic analytic integration approaches, and appraisal of methodological strengths and limitations in applied scenarios.