J. C. DeFries

12.2k total citations · 2 hit papers
165 papers, 8.6k citations indexed

About

J. C. DeFries is a scholar working on Experimental and Cognitive Psychology, Developmental and Educational Psychology and Genetics. According to data from OpenAlex, J. C. DeFries has authored 165 papers receiving a total of 8.6k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Experimental and Cognitive Psychology, 40 papers in Developmental and Educational Psychology and 37 papers in Genetics. Recurrent topics in J. C. DeFries's work include Cognitive Abilities and Testing (67 papers), Reading and Literacy Development (35 papers) and Child and Adolescent Psychosocial and Emotional Development (16 papers). J. C. DeFries is often cited by papers focused on Cognitive Abilities and Testing (67 papers), Reading and Literacy Development (35 papers) and Child and Adolescent Psychosocial and Emotional Development (16 papers). J. C. DeFries collaborates with scholars based in United States, United Kingdom and Australia. J. C. DeFries's co-authors include Robert Plomin, David W. Fulker, John C. Loehlin, Michele C. LaBuda, Steven G. Vandenberg, Gerald E. McClearn, Joseph P. Hegmann, James R. Wilson, Robin P. Corley and Bruce F. Pennington and has published in prestigious journals such as Nature, Science and Psychological Bulletin.

In The Last Decade

J. C. DeFries

164 papers receiving 8.0k 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.

Genotype-environment interaction and correlation in the analysis of human behavior.

1977 1.1k citations Robert Plomin, J. C. DeFries et al. profile →
Multiple regression analysis of twin data

1985 517 citations J. C. DeFries, David W. Fulker Behavior Genetics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J. C. DeFries United States	48	3.5k	2.4k	2.1k	2.0k	1.5k	165	8.6k
David W. Fulker United States	55	4.0k 1.2×	2.1k 0.9×	3.4k 1.6×	3.2k 1.6×	1.6k 1.1×	195	11.3k
Stephen A. Petrill United States	48	2.2k 0.6×	2.2k 0.9×	877 0.4×	2.0k 1.0×	2.3k 1.6×	170	7.2k
Robin P. Corley United States	57	3.5k 1.0×	1.9k 0.8×	1.2k 0.6×	4.1k 2.1×	1.6k 1.1×	238	11.9k
Frank M. Spinath Germany	46	3.2k 0.9×	1.1k 0.4×	752 0.4×	2.3k 1.2×	1.4k 0.9×	163	7.0k
Philip S. Dale United States	60	2.7k 0.8×	9.6k 4.0×	1.5k 0.7×	2.6k 1.3×	3.6k 2.4×	226	14.5k
Gerald E. McClearn United States	60	2.9k 0.8×	665 0.3×	2.5k 1.2×	1.6k 0.8×	381 0.3×	218	12.4k
John C. DeFries United States	62	2.8k 0.8×	6.1k 2.5×	2.6k 1.2×	2.0k 1.0×	2.5k 1.7×	163	13.0k
Kristen C. Jacobson United States	40	1.8k 0.5×	892 0.4×	899 0.4×	2.5k 1.3×	653 0.4×	141	7.8k
John K. Hewitt United States	65	5.2k 1.5×	1.2k 0.5×	2.6k 1.2×	6.8k 3.5×	1.5k 1.0×	331	17.3k
Yulia Kovas United Kingdom	39	1.8k 0.5×	1.4k 0.6×	689 0.3×	639 0.3×	1.5k 1.0×	151	4.8k

Countries citing papers authored by J. C. DeFries

Since Specialization

Citations

This map shows the geographic impact of J. 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 J. 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 J. C. DeFries more than expected).

Fields of papers citing papers by J. C. DeFries

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of J. C. DeFries. A scholar is included among the top collaborators of J. 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 J. C. DeFries. J. C. DeFries is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Johnson, Ronald C., J. C. DeFries, James R. Wilson, et al.. (2020). Assortative Marriage for Specific Cognitive Abilities in Two Ethnic Groups. Human Biology.

Wadsworth, Sally J., Richard K. Olson, & J. C. DeFries. (2010). Differential Genetic Etiology of Reading Difficulties as a Function of IQ: An Update. Behavior Genetics. 40(6). 751–758. 19 indexed citations

Gayán, Javier, Erik G. Willcutt, Simon E. Fisher, et al.. (2005). Bivariate linkage scan for reading disability and attention‐deficit/hyperactivity disorder localizes pleiotropic loci. Journal of Child Psychology and Psychiatry. 46(10). 1045–1056. 69 indexed citations

Gayán, Javier, Jungho Ahn, David L. Pauls, et al.. (2002). Evidence for Linkage and Association with Reading Disability, on 6p21.3-22. The American Journal of Human Genetics. 70(5). 1287–1298. 106 indexed citations

Wadsworth, Sally J., Robert Plomin, & J. C. DeFries. (1999). Etiology of the stability of reading performance from 7 to 12 years of age in the Colorado adoption project.. Behavior Genetics. 29(5). 373–373. 2 indexed citations

Alarcón, Maricela, Robert Plomin, David W. Fulker, Robin P. Corley, & J. C. DeFries. (1998). Multivariate Path Analysis of Specific Cognitive Abilities Data at 12 Years of Age in the Colorado Adoption Project. Behavior Genetics. 28(4). 255–264. 41 indexed citations

DeFries, J. C.. (1997). Colorado Learning Disabilities Research Center. 8(1). 7–19. 111 indexed citations

Cherny, Stacey S., Robin P. Corley, David W. Fulker, Robert Plomin, & J. C. DeFries. (1996). Parent-offspring resemblance for adult general cognitive ability in the Colorado Adoption Project.. Behavior Genetics. 26(6). 583–583. 1 indexed citations

Schmitz, Stephanie, Kimberly J. Saudino, Robert Plomin, David W. Fulker, & J. C. DeFries. (1996). Genetic and Environmental Influences on Temperament in Middle Childhood: Analyses of Teacher and Tester Ratings. Child Development. 67(2). 409–409. 35 indexed citations

10.

Alarcón, Maricela, J. C. DeFries, & David W. Fulker. (1995). Etiology of individual differences in reading performance: A test of sex limitation. Behavior Genetics. 25(1). 17–23. 13 indexed citations

11.

Cherny, Stacey S., David W. Fulker, Robin P. Corley, Robert Plomin, & J. C. DeFries. (1994). Continuity and change in infant shyness from 14 to 20 months. Behavior Genetics. 24(4). 365–379. 46 indexed citations

12.

Plomin, Robert, Robert N. Emde, Jeffrey S. Reznick, et al.. (1993). Genetic Change and Continuity from Fourteen to Twenty Months: The MacArthur Longitudinal Twin Study. Child Development. 64(5). 1354–1354. 122 indexed citations

13.

Gillis, Jacquelyn J., J. C. DeFries, & David W. Fulker. (1992). Confirmatory Factor Analysis of Reading and Mathematics Performance: A Twin Study. Acta geneticae medicae et gemellologiae twin research. 41(4). 287–300. 9 indexed citations

14.

Waldman, Irwin D., J. C. DeFries, & David W. Fulker. (1992). Quantitative genetic analysis of IQ development in young children: Multivariate multiple regression with orthogonal polynomials. Behavior Genetics. 22(2). 229–238. 2 indexed citations

15.

Wadsworth, Sally J., J. C. DeFries, Jim Stevenson, Jeffrey W. Gilger, & Bruce F. Pennington. (1992). Gender Ratios Among Reading‐Disabled Children and Their Siblings as a Function of Parental Impairment. Journal of Child Psychology and Psychiatry. 33(7). 1229–1239. 64 indexed citations

16.

DeFries, J. C., Richard K. Olson, Bruce F. Pennington, & S. D. Smith. (1991). Colorado Reading Project: Past, Present, and Future. 2(2). 25 indexed citations

17.

DeFries, J. C., Sally J. Wadsworth, & Jacquelyn J. Gillis. (1990). Gender differences in cognitive abilities of reading-disabled twins. Annals of Dyslexia. 40(1). 216–228. 5 indexed citations

18.

DeFries, J. C., et al.. (1989). LS X SS Recombinant Inbred Strains of Mice: Initial. Characterization. Alcoholism Clinical and Experimental Research. 13(2). 196–200. 110 indexed citations

19.

DeFries, J. C. & David W. Fulker. (1988). Multiple Regression Analysis of Twin Data: Etiology of Deviant Scores versus Individual Differences. Acta geneticae medicae et gemellologiae twin research. 37(3-4). 205–216. 231 indexed citations

20.

Plomin, Robert & J. C. DeFries. (1985). Origins of individual differences in infancy : the Colorado Adoption Project. DigitalGeorgetown (Georgetown University Library). 211 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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