*79%*:**Student Difficulties with Quantum Mechanics Formalism***67%*:**Student Difficulties in Understanding Probability in Quantum Mechanics***67%*:**Student difficulties with determining expectation values in quantum mechanics***67%*:**Using student-generated content to engage students in upper-division quantum mechanics***66%*:**Student difficulties in learning quantum mechanics***66%*:**Exploring Student Understanding of Energy through the Quantum Mechanics Conceptual Survey***64%*:**The Influence of Student Understanding of Classical Physics When Learning Quantum Mechanics***64%*:**Analogous Patterns of Student Reasoning Difficulties in Introductory Physics and Upper- Level Quantum Mechanics***64%*:**Investigating Student Difficulties with Time dependence of Expectation Values in Quantum Mechanics***58%*:**Conceptual and Mathematical Barriers to Students Learning Quantum Mechanics***58%*:**Characterizing and monitoring student discomfort in upper-division quantum mechanics***57%*:**Assessing and improving student understanding of quantum mechanics***57%*:**Categorization of quantum mechanics problems by professors and students***55%*:**Dynamics of Student Modeling: A Theory, Algorithms, and Application to Quantum Mechanics***55%*:**Improving Students' Understanding of Quantum Mechanics***55%*:**Improving students' understanding of quantum mechanics by using peer instruction tools***55%*:**Improving student understanding of addition of angular momentum in quantum mechanics***54%*:**Improving studentsâ€™ understanding of quantum measurement. I. Investigation of difficulties***54%*:**Addressing Student Models of Energy Loss in Quantum Tunneling**