About the Authors

Matthew H. Schneps

mschneps@cfa.harvard.edu

Affiliation Science Education Department, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, United States of America

James R. Brockmole

Affiliation Department of Psychology, University of Notre Dame, Notre Dame, Indiana, United States of America

Gerhard Sonnert

Affiliation Science Education Department, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, United States of America

Marc Pomplun

Affiliation Department of Computer Science, University of Massachusetts at Boston, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MS JB MP. Performed the experiments: MS. Analyzed the data: JB GS. Contributed reagents/materials/analysis tools: JB MP. Wrote the paper: MS JB.