Dr. John Opfer

John Opfer

Dr. John Opfer

Professor, Developmental

opfer.7@osu.edu

(614) 292-9547

245 Psychology Building
1835 Neil Ave.
Columbus, OH
43210

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Areas of Expertise

  • Conceptual Development
  • Representation
  • Categorization
  • Analogy and Induction
  • Numerical Cognition

Education

  • B.A., Psychology and Classical Humanities The George Washington University
  • Ph.D., Psychology (Developmental) University of Michigan-Ann Arbor
  • Postdoctoral Research Associate Carnegie Mellon University

Recent Publications

Qin, J., Kim, D, & Opfer, J. E. (2024). Varieties of number-line estimation:  Systematic review, models, and data.  Developmental Review, 74, 101-161. DOI.   

 Yu, S., Kim, D., Fitzsimmons, C. J., Mielicki, M. K., Thompson, C. A., & Opfer, J. E. (2022). From integers to fractions: The role of analogy in developing a coherent understanding of proportional magnitude. Developmental Psychology, 58(10), 1912–1930. DOI

 Opfer, J. E., Kim, D., Fazio, L., Zhou, X., & Siegler, R. S. (2021). Cognitive mediators of US-China differences in early symbolic arithmetic. PLoS ONE 16(8): e0255283. DOI

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