*70%*:**Student Difficulties with Energy in Quantum Mechanics***69%*:**Student Difficulties in Understanding Probability in Quantum Mechanics***69%*:**Investigating Student Difficulties with Time dependence of Expectation Values in Quantum Mechanics***65%*:**Student difficulties in learning quantum mechanics***63%*:**The Influence of Student Understanding of Classical Physics When Learning Quantum Mechanics***60%*:**Surveying students' understanding of quantum mechanics in one spatial dimension***59%*:**Exploring Student Understanding of Energy through the Quantum Mechanics Conceptual Survey***59%*:**Assessing and improving student understanding of quantum mechanics***59%*:**Surveying Studentsâ€™ Understanding of Quantum Mechanics***59%*:**Analogous Patterns of Student Reasoning Difficulties in Introductory Physics and Upper- Level Quantum Mechanics***58%*:**Testing the development of student conceptual and visualization understanding in quantum mechanics through the undergraduate career***58%*:**Student understanding of quantum mechanics***58%*:**Improving Students' Understanding of Quantum Mechanics***56%*:**Categorization of quantum mechanics problems by professors and students***55%*:**Dynamics of Student Modeling: A Theory, Algorithms, and Application to Quantum Mechanics***55%*:**Improving student understanding of addition of angular momentum in quantum mechanics***55%*:**Conceptual and Mathematical Barriers to Students Learning Quantum Mechanics***53%*:**On the Study of Student Use of Meta-Resources in Learning Quantum Mechanics***53%*:**Addressing Student Difficulties with Statistical Mechanics: The Boltzmann Factor**