publication venue for Upper-division student difficulties with separation of variables 2015 Validation and analysis of the coupled multiple response Colorado upper-division electrostatics diagnostic 2015 Development and uses of upper-division conceptual assessments 2015 Educational transformation in upper-division physics: The Science Education Initiative model, outcomes, and lessons learned 2015 Model-based reasoning in the physics laboratory: Framework and initial results 2015 Transforming a fourth year modern optics course using a deliberate practice framework 2015 Quantum mechanics concept assessment: Development and validation study 2015 Upper-division student difficulties with the Dirac delta function 2015 Coupled multiple-response versus free-response conceptual assessment: An example from upper-division physics 2014 Comparison of performance on multiple-choice questions and open-ended questions in an introductory astronomy laboratory 2014 Epistemology and expectations survey about experimental physics: Development and initial results 2014 Analytic framework for students' use of mathematics in upper-division physics 2013 Colorado Upper-Division Electrostatics diagnostic: A conceptual assessment for the junior level 2012 Transforming the junior level: Outcomes from instruction and research in E&M 2012 Observations on student difficulties with mathematics in upper-division electricity and magnetism 2012 Learning and retention of quantum concepts with different teaching methods 2011 Design and validation of the Quantum Mechanics Conceptual Survey 2010 The construction of different classroom norms during Peer Instruction: Students perceive differences 2010 Factors promoting engaged exploration with computer simulations 2010 Gender disparities in second-semester college physics: The incremental effects of a "smog of bias" 2010 Refined characterization of student perspectives on quantum physics 2010 Teaching and understanding of quantum interpretations in modern physics courses 2010 Not all interactive engagement is the same: Variations in physics professors’ implementation ofPeer Instruction 2009 Longitudinal study of student conceptual understanding in electricity and magnetism 2009 Development of quantum perspectives in modern physics 2009 Characterizing the gender gap in introductory physics 2009 Attitudinal gains across multiple universities using the Physics and Everyday Thinking curriculum 2008 Deeper look at student learning of quantum mechanics: The case of tunneling 2008 Students know what physicists believe, but they don't agree: A study using the CLASS survey 2008 Patterns of multiple representation use by experts and novices during physics problem solving 2008 Sustaining educational reforms in introductory physics 2008 Why we should teach the Bohr model and how to teach it effectively 2008 Analogical scaffolding and the learning of abstract ideas in physics: Empirical studies 2007 Publisher's Note: Strongly and weakly directed approaches to teaching multiple representation use in physics [Phys. Rev. ST Phys. Educ. Res.3, 010108 (2007)] 2007 Analogical scaffolding and the learning of abstract ideas in physics: An example from electromagnetic waves 2007 Reducing the gender gap in the physics classroom: How sufficient is interactive engagement? 2007 Strongly and weakly directed approaches to teaching multiple representation use in physics 2007 Use of analogy in learning physics: The role of representations 2006 Effects of representation on students solving physics problems: A fine-grained characterization 2006 Effect of instructional environment on physics students’ representational skills 2006 New instrument for measuring student beliefs about physics and learning physics: The Colorado Learning Attitudes about Science Survey 2006 Student representational competence and self-assessment when solving physics problems 2005 Publisher's Note: Replicating and understanding successful innovations: Implementing tutorials in introductory physics [Phys. Rev. ST Physics Ed. Research1, 010101 (2005)] 2005 Replicating and understanding successful innovations: Implementing tutorials in introductory physics 2005 When learning about the real world is better done virtually: A study of substituting computer simulations for laboratory equipment 2005