is a post-doctoral research associate at Texas A&M University. She received her Ph.D. and M.S.Ed.in Educational Psychology with the specialties in Gifted Education and Research Methods & Measurement, respectively from Purdue University. Her work centers on P-16 engineering education research, as a psychometrician, program evaluator, and institutional data analyst. As a psychometrician, she revised the PSVT:R for secondary and undergraduate students, developed the TESS (Teaching Engineering Self-efficacy Scale) for K-12 teachers, and rescaled the SASI (Student Attitudinal Success Inventory) for engineering students. As a program evaluator, she has evaluated the effects of teacher professional development (TPD) programs on K-6 teachers' and elementary students' attitudes toward engineering and STEM knowledge. As an institutional data analyst, she is investigating engineering students' pathways to their success, exploring subgroup variations.
Mariana Tafur, Purdue University, West LafayetteMariana Tafur is a Ph.D. candidate and a graduate assistant in the School of Engineering Education at Purdue University. She has a M.S., in Education at Los Andes University, Bogota, Colombia; and a B.S., in Electrical Engineering at Los Andes University, Bogota, Colombia. She is a 2010 Fulbright Fellow. Her research interests include engineering skills development, STEM for non-engineers adults, motivation in STEM to close the technology literacy gap, STEM formative assessment, and Mixed-Methods design.Prof. Heidi A. Diefes-Dux, Purdue University, West Lafayette Heidi A. Diefes-Dux is a Professor in the School of Engineering Education at Purdue University. She received her B.S. and M.S. in Food Science from Cornell University and her Ph.D. in Food Process Engineering from the Department of Agricultural and Biological Engineering at Purdue University. She is a member of Purdue's Teaching Academy. Since 1999, she has been a faculty member within the FirstYear Engineering Program, teaching and guiding the design of one of the required first-year engineering courses that engages students in open-ended problem solving and design. Her research focuses on the development, implementation, and assessment of modeling and design activities with authentic engineering contexts. She is currently a member of the educational team for the Network for Computational Nanotechnology (NCN).