John C. DeFries

18.7k total citations · 2 hit papers
163 papers, 13.0k citations indexed

About

John C. DeFries is a scholar working on Developmental and Educational Psychology, Experimental and Cognitive Psychology and Genetics. According to data from OpenAlex, John C. DeFries has authored 163 papers receiving a total of 13.0k indexed citations (citations by other indexed papers that have themselves been cited), including 91 papers in Developmental and Educational Psychology, 46 papers in Experimental and Cognitive Psychology and 46 papers in Genetics. Recurrent topics in John C. DeFries's work include Reading and Literacy Development (85 papers), Cognitive Abilities and Testing (45 papers) and Attention Deficit Hyperactivity Disorder (32 papers). John C. DeFries is often cited by papers focused on Reading and Literacy Development (85 papers), Cognitive Abilities and Testing (45 papers) and Attention Deficit Hyperactivity Disorder (32 papers). John C. DeFries collaborates with scholars based in United States, United Kingdom and Australia. John C. DeFries's co-authors include Bruce F. Pennington, Richard K. Olson, Erik G. Willcutt, Robin P. Corley, Robert Plomin, John K. Hewitt, Akira Miyake, Sally J. Wadsworth, Susan E. Young and Naomi P. Friedman and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and Journal of Personality and Social Psychology.

In The Last Decade

John C. DeFries

162 papers receiving 12.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Individual differences in executive functions are almost entirely genetic in origin.

2008 1.1k citations Naomi P. Friedman, Akira Miyake et al. Journal of Experimental Psychology General profile →
Not All Executive Functions Are Related to Intelligence

2006 918 citations Naomi P. Friedman, Akira Miyake et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
John C. DeFries United States	62	6.1k	3.6k	3.1k	2.8k	2.6k	163	13.0k
Martha B. Denckla United States	79	7.0k 1.2×	9.4k 2.6×	6.5k 2.1×	1.1k 0.4×	1.4k 0.5×	192	17.6k
Bennett A. Shaywitz United States	65	11.8k 2.0×	8.6k 2.4×	3.8k 1.2×	1.4k 0.5×	754 0.3×	226	19.1k
Laurent Mottron Canada	61	3.3k 0.5×	10.3k 2.8×	2.2k 0.7×	1.1k 0.4×	3.1k 1.2×	203	12.2k
Herbert Roeyers Belgium	61	3.5k 0.6×	6.7k 1.9×	4.7k 1.5×	1.1k 0.4×	777 0.3×	280	11.7k
Sally E. Shaywitz United States	63	13.2k 2.2×	8.1k 2.2×	3.2k 1.1×	1.3k 0.5×	891 0.3×	165	18.2k
Robin P. Corley United States	57	1.9k 0.3×	2.3k 0.6×	1.6k 0.5×	3.5k 1.2×	1.2k 0.5×	238	11.9k
Erik G. Willcutt United States	69	7.7k 1.3×	8.8k 2.4×	13.6k 4.4×	3.0k 1.1×	922 0.4×	174	19.9k
Philip S. Dale United States	60	9.6k 1.6×	2.8k 0.8×	448 0.1×	2.7k 1.0×	1.5k 0.6×	226	14.5k
Stefano Vicari Italy	54	2.9k 0.5×	3.7k 1.0×	2.1k 0.7×	582 0.2×	1.3k 0.5×	390	9.7k
Patricia Howlin United Kingdom	69	5.4k 0.9×	14.0k 3.8×	4.4k 1.4×	738 0.3×	3.2k 1.2×	248	18.6k

Countries citing papers authored by John C. DeFries

Since Specialization

Citations

This map shows the geographic impact of John C. DeFries'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 C. DeFries with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John C. DeFries more than expected).

Fields of papers citing papers by John C. DeFries

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John C. DeFries. 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 C. DeFries. The network helps show where John C. DeFries may publish in the future.

Co-authorship network of co-authors of John C. DeFries

This figure shows the co-authorship network connecting the top 25 collaborators of John C. DeFries. A scholar is included among the top collaborators of John C. DeFries based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John C. DeFries. John C. DeFries is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

DeFries, John C., et al.. (2019). A Hua He Inoa: Hawaiian Culture-Based Celestial Naming. Bulletin of the American Astronomical Society. 51(7). 135. 1 indexed citations

Huibregtse, Brooke M., et al.. (2016). A Longitudinal Adoption Study of Substance Use Behavior in Adolescence. Twin Research and Human Genetics. 19(4). 330–340. 3 indexed citations

Wadsworth, Sally J., John C. DeFries, Erik G. Willcutt, Bruce F. Pennington, & Richard K. Olson. (2015). The Colorado Longitudinal Twin Study of Reading Difficulties and ADHD: Etiologies of Comorbidity and Stability. Twin Research and Human Genetics. 18(6). 755–761. 31 indexed citations

Christopher, Micaela E., Jacqueline Hulslander, Brian Byrne, et al.. (2013). The genetic and environmental etiologies of individual differences in early reading growth in Australia, the United States, and Scandinavia. Journal of Experimental Child Psychology. 115(3). 453–467. 18 indexed citations

Willcutt, Erik G., Richard Boada, Margaret W. Riddle, et al.. (2011). Colorado Learning Difficulties Questionnaire: Validation of a parent-report screening measure.. Psychological Assessment. 23(3). 778–791. 84 indexed citations

Smith, Shelley D., Elena L. Grigorenko, Erik G. Willcutt, et al.. (2010). Etiologies and Molecular Mechanisms of Communication Disorders. Journal of Developmental & Behavioral Pediatrics. 31(7). 555–563. 8 indexed citations

Stallings, Michael C., et al.. (2008). DeFries–Fulker and Pearson–Aitken Model-fitting Analyses of Reading Performance Data from Selected and Unselected Twin Pairs. Behavior Genetics. 38(2). 101–107. 3 indexed citations

Friedman, Naomi P., Akira Miyake, Susan E. Young, et al.. (2008). Individual differences in executive functions are almost entirely genetic in origin.. Journal of Experimental Psychology General. 137(2). 201–225. 1095 indexed citations breakdown →

Wadsworth, Sally J., et al.. (2007). Etiology of the Stability of Reading Difficulties: The Longitudinal Twin Study of Reading Disabilities. Twin Research and Human Genetics. 10(3). 434–439. 27 indexed citations

10.

Wadsworth, Sally J. & John C. DeFries. (2005). Genetic Etiology of Reading Difficulties in Boys and Girls. Twin Research and Human Genetics. 8(6). 594–601. 18 indexed citations

11.

Wadsworth, Sally J. & John C. DeFries. (2005). Genetic Etiology of Reading Difficulties in Boys and Girls. Twin Research and Human Genetics. 8(6). 594–601. 12 indexed citations

12.

Wadsworth, Sally J., et al.. (2004). Causal Models of Reading Disability: A Twin Study. Twin Research. 7(3). 275–283. 1 indexed citations

13.

Wadsworth, Sally J., et al.. (2004). Causal Models of Reading Disability: A Twin Study. Twin Research. 7(3). 275–283. 19 indexed citations

14.

Hulslander, Jacqueline, Joel B. Talcott, Caroline Witton, et al.. (2004). Sensory processing, reading, IQ, and attention. Journal of Experimental Child Psychology. 88(3). 274–295. 86 indexed citations

15.

Byrne, Brian, Ruth Fielding‐Barnsley, Peter Quain, et al.. (2002). Preliminary results from a longitudinal preschool twin study of early reading development. Annals of Dyslexia. 52. 49–73. 42 indexed citations

16.

Davis, Chayna, Valerie S. Knopik, Sally J. Wadsworth, & John C. DeFries. (2000). Self–reported reading problems in parents of twins with reading difficulties. Twin Research. 3(2). 88–91. 5 indexed citations

17.

Knopik, Valerie S. & John C. DeFries. (1999). Etiology of covariation between reading and mathematics performance: a twin study. Twin Research. 2(3). 226–234. 24 indexed citations

18.

Gilger, Jeffrey W., Bruce F. Pennington, Ronald J. Harbeck, et al.. (1998). A Twin and Family Study of the Association Between Immune System Dysfunction and Dyslexia Using Blood Serum Immunoassay and Survey Data. Brain and Cognition. 36(3). 310–333. 15 indexed citations

19.

Markel, Paul D., et al.. (1996). Quantitative trait loci for ethanol sensitivity in the LS X SS recombinant inbred strains: Interval mapping. Behavior Genetics. 26(4). 447–458. 59 indexed citations

20.

Gillis, Jacquelyn J., Jeffrey W. Gilger, Bruce F. Pennington, & John C. DeFries. (1992). Attention deficit disorder in reading-disabled twins: Evidence for a genetic etiology. Journal of Abnormal Child Psychology. 20(3). 303–315. 132 indexed citations

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.

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