John E. Opfer
Impact in
- Statistics and Probability top 0.1%
- Cognitive and developmental aspects of mathematical skills
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- Reading and Literacy Development
- Child and Animal Learning Development
Papers in ⓘ
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- Cognitive and developmental aspects of mathematical skills 42
- Education 36
- Mathematics Education and Teaching Techniques 33
- Education Methods and Practices 6
- Co-authors
- Robert S. Siegler (1 shared paper)Clarissa A. Thompson (17 shared papers)Robert S. Siegler (5 shared papers)Ellen E. Furlong (3 shared papers)Ross H. Nehm (3 shared papers)Minsu Ha (2 shared papers)Koleen McCrink (1 shared paper)Jessica Love (1 shared paper)
- Journals
- Cognitive Science (7 papers)Child Development (4 papers)Cognition (4 papers)Developmental Science (3 papers)Developmental Psychology (3 papers)
- Partner nations
- United StatesChinaCanada
In The Last Decade
John E. Opfer
56 papers receiving 2.6k citations
Hit Papers
Peers
Comparison fields: 5 of 103
- Statistics and Probability 1.8k
- Developmental and Educational Psychology 1.4k
- Education 1.6k
- History and Philosophy of Science 175
- General Decision Sciences 68
Countries citing papers authored by John E. Opfer
This map shows the geographic impact of John E. Opfer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John E. Opfer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John E. Opfer more than expected).
Fields of papers citing papers by John E. Opfer
This network shows the impact of papers produced by John E. Opfer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John E. Opfer. The network helps show where John E. Opfer may publish in the future.
Co-authors
The 25 scholars most cited alongside John E. Opfer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 59 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | The Development of Numerical Estimation Hit paper breakdown → | 2003 | 767 |
| 2 | 2007 | 226 | |
| 3 | 2004 | 164 | |
| 4 | 2009 | 136 | |
| 5 | 2012 | 134 | |
| 6 | 2009 | 123 | |
| 7 | 2010 | 123 | |
| 8 | 2012 | 122 | |
| 9 | 2002 | 97 | |
| 10 | 2011 | 89 | |
| 11 | 2008 | 73 | |
| 12 | 2008 | 69 | |
| 13 | 2014 | 61 | |
| 14 | 2011 | 56 | |
| 15 | 2016 | 47 | |
| 16 | 2008 | 40 | |
| 17 | 2008 | 39 | |
| 18 | 2006 | 37 | |
| 19 | 2001 | 37 | |
| 20 | 2008 | 36 |
About John E. Opfer
John E. Opfer is a scholar working on Statistics and Probability, Education, Developmental and Educational Psychology, Social Psychology and Cognitive Neuroscience, having authored 59 papers that have together received 2.8k indexed citations. Recurring topics across this work include Cognitive and developmental aspects of mathematical skills (42 papers), Mathematics Education and Teaching Techniques (33 papers), Reading and Literacy Development (15 papers), Child and Animal Learning Development (14 papers), Education Methods and Practices (6 papers), Animal and Plant Science Education (5 papers), Evolution and Science Education (3 papers) and Neural and Behavioral Psychology Studies (3 papers). The work is most often cited by research in Statistics and Probability (1.8k citations), Developmental and Educational Psychology (1.4k citations), Education (1.6k citations), History and Philosophy of Science (175 citations) and General Decision Sciences (68 citations). John E. Opfer has collaborated with scholars based in United States, China and Canada. Frequent co-authors include Robert S. Siegler, Clarissa A. Thompson, Robert S. Siegler, Ellen E. Furlong, Ross H. Nehm, Minsu Ha, Koleen McCrink, Jessica Love, Roger Ratcliff and Jeffrey M. DeVries. Their work appears in journals such as Cognitive Science, Child Development, Cognition, Developmental Science and Developmental Psychology.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.