1. Psychology Department, Virginia Commonwealth University, Richmond, Virginia, USA
2. Psychology Department, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
3. Psychology in Education Department, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
4. School of Engineering and Applied Science, University of Virginia, Charlottesville, Virginia, USA
5. Department of Electrical & Computer Engineering, University of Washington, Seattle, Washington, USA
6. School of Information, University of Michigan, Ann Arbor, Michigan, USA
7. Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, Washington, USA
8. Information School, University of Washington, Seattle, Washington, USA