*63%*:**Students’ difficulties with solving bound and scattering state problems in quantum mechanics***61%*:**Students’ difficulties with partial differential equations in quantum mechanics***49%*:**Students’ metarepresentational competence with matrix notation and Dirac notation in quantum mechanics***47%*:**Analogous Patterns of Student Reasoning Difficulties in Introductory Physics and Upper- Level Quantum Mechanics***46%*:**Student Difficulties with Quantum Mechanics Formalism***46%*:**Sense-making with Inscriptions in Quantum Mechanics***45%*:**Designing, validating, and contrasting conceptual quantum mechanics questions for spin states and spatial wave functions***43%*:**Student Difficulties in Understanding Probability in Quantum Mechanics***43%*:**Mapping university students’ epistemic framing of computational physics using network analysis***43%*:**Validation and administration of a conceptual survey on the formalism and postulates of quantum mechanics***42%*:**Student difficulties with determining expectation values in quantum mechanics***42%*:**Template for teaching and assessment of problem solving in introductory physics***42%*:**Characterizing and monitoring student discomfort in upper-division quantum mechanics***42%*:**Student evaluation of more or better experimental data in classical and quantum mechanics***42%*:**Surveying college introductory physics students’ attitudes and approaches to problem solving***42%*:**Applying a symbolic forms lens to probability expressions in upper-division quantum mechanics***41%*:**Student Difficulties with Energy in Quantum Mechanics***41%*:**Student difficulties in learning quantum mechanics***41%*:**Categorization of quantum mechanics problems by professors and students**