John Clarence Defries

John Clarence Defries's AcademicInfluence.com Rankings

Psychology

#2813

Historical Rank

Cognitive Psychology

#219

Historical Rank

psychology Degrees

Download Badge

Psychology

Why Is John Clarence Defries Influential?

(Suggest an Edit or Addition)

(See a Problem?)

John Clarence Defries's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Individual differences in executive functions are almost entirely genetic in origin. (2008) (1315)
Not All Executive Functions Are Related to Intelligence (2006) (1170)
Behavioral Genetics : A Primer (1980) (720)
Quantitative trait locus for reading disability on chromosome 6. (1994) (557)
DCDC2 is associated with reading disability and modulates neuronal development in the brain. (2005) (417)
Developmental dyslexia: genetic dissection of a complex cognitive trait (2002) (375)
Processing Speed Deficits in Attention Deficit/Hyperactivity Disorder and Reading Disability (2006) (363)
Top 10 Replicated Findings From Behavioral Genetics (2016) (333)
Evidence for a genetic aetiology in reading disability of twins (1987) (316)
Etiology and neuropsychology of comorbidity between RD and ADHD: The case for multiple-deficit models (2010) (309)
Independent genome-wide scans identify a chromosome 18 quantitative-trait locus influencing dyslexia (2002) (285)
Predicting word reading and comprehension with executive function and speed measures across development: a latent variable analysis. (2012) (278)
A multiple deficit model of reading disability and attention-deficit/hyperactivity disorder: searching for shared cognitive deficits. (2011) (276)
Nature and nurture during infancy and early childhood (1988) (275)
Quantitative-trait locus for specific language and reading deficits on chromosome 6p. (1999) (274)
A twin study of the etiology of comorbidity: attention-deficit hyperactivity disorder and dyslexia. (1992) (262)
Twin study of the etiology of comorbidity between reading disability and attention-deficit/hyperactivity disorder. (2000) (261)
A 77-kilobase region of chromosome 6p22.2 is associated with dyslexia in families from the United Kingdom and from the United States. (2004) (253)
Comorbidity Between Reading Disability and Math Disability (2013) (242)
Temperament, emotion, and cognition at fourteen months: the MacArthur Longitudinal Twin Study. (1992) (235)
Nature, Nurture, and Cognitive Development from 1 to 16 Years: A Parent-Offspring Adoption Study (1997) (235)
Sex differences in ADHD symptom severity. (2015) (232)
Origins of individual differences in infancy : the Colorado Adoption Project (1985) (232)
Evidence for major gene transmission of developmental dyslexia. (1991) (229)
Genetics and intelligence: Recent data (1980) (225)
Behavioral genetics in the postgenomic era (2003) (220)
Understanding comorbidity: A twin study of reading disability and attention‐deficit/hyperactivity disorder (2007) (215)
Testing for Neuropsychological Endophenotypes in Siblings Discordant for Attention-Deficit/Hyperactivity Disorder (2007) (205)
A Twin MRI Study of Size Variations in the Human Brain (2000) (197)
Genetic and environmental components of "environmental" influences. (1985) (196)
QTL Analysis of Multiple Behavioral Measures of Anxiety in Mice (2004) (195)
The Internal and External Validity of Sluggish Cognitive Tempo and its Relation with DSM–IV ADHD (2014) (193)
Social Dominance and Darwinian Fitness in the Laboratory Mouse (1970) (186)
Attention deficit disorder in reading-disabled twins: Evidence for a genetic etiology (1992) (183)
Nature and Nurture During Middle Childhood (1994) (182)
Comorbidity of Reading and Mathematics Disabilities (1995) (171)
QTL analysis identifies multiple behavioral dimensions in ethological tests of anxiety in laboratory mice (2001) (170)
Hyperactivity and spelling disability: testing for shared genetic aetiology. (1993) (166)
Open-Field Behavior in Mice: Evidence for a Major Gene Effect Mediated by the Visual System (1966) (166)
Refinement of the 6p21.3 quantitative trait locus influencing dyslexia: linkage and association analyses (2004) (158)
Genetic and environmental influences on reading and listening comprehension (2006) (157)
Risk for reading disability as a function of parental history in three family studies (1991) (157)
Behavioral Genetics (5th edition) (2008) (153)
Genetic Influence on Tester-Rated Infant Temperament as Assessed by Bayley's Infant Behavior Record: Nonadoptive and Adoptive Siblings and Twins. (1992) (148)
Quantitative trait locus for reading disability on chromosome 6p is pleiotropic for attention-deficit/hyperactivity disorder. (2002) (147)
Genetic and environmental influences on aspects of literacy and language in early childhood: Continuity and change from preschool to Grade 2 (2009) (146)
Are RAN- and phonological awareness-deficits additive in children with reading disabilities? (2001) (145)
Parental Education Moderates Genetic Influences on Reading Disability (2008) (144)
Behavioral genetics: A primer, 2nd ed. (1990) (143)
Evidence for linkage and association with reading disability on 6p21.3-22. (2002) (138)
Gender ratios for reading difficulties. (2009) (138)
Etiology of Inattention and Hyperactivity/Impulsivity in a Community Sample of Twins with Learning Difficulties (2000) (136)
Colorado Learning Disabilities Research Center (1997) (135)
Genetic change and continuity from fourteen to twenty months (1993) (129)
Longitudinal twin study of early reading development in three countries: Preliminary results (2002) (129)
A Twin Study of Mathematics Disability (1997) (127)
Individual Differences in Television Viewing in Early Childhood: Nature as Well as Nurture (1990) (125)
LS X SS recombinant inbred strains of mice: initial characterization. (1989) (123)
Quantitative trait locus for reading disability: correction. (1995) (123)
Understanding the Complex Etiologies of Developmental Disorders: Behavioral and Molecular Genetic Approaches (2010) (122)
Longitudinal twin study of early literacy development: Preschool through Grade 1 (2006) (121)
Environmental and genetic influences on prereading skills in Australia, Scandinavia, and the United States. (2005) (118)
Parent–offspring resemblance for specific cognitive abilities in two ethnic groups (1976) (117)
Multiple regression analysis of sib-pair data on reading to detect quantitative trait loci (1991) (117)
Genetics of specific reading disability (1996) (112)
Sensory processing, reading, IQ, and attention. (2004) (112)
Differential Genetic Etiology of Reading Disability as a Function of IQ (2000) (111)
Family History as an Indicator of Risk for Reading Disability (1984) (111)
Gender Ratios in Children with Reading Disability and Their Affected Relatives (1989) (110)
Familial Nature of Reading Disability (1978) (110)
Explaining the sex difference in dyslexia (2017) (110)
The External Validity of Age- Versus IQ-Discrepancy Definitions of Reading Disability (1992) (110)
Longitudinal Twin Study of Early Literacy Development: Preschool and Kindergarten Phases (2005) (110)
Bivariate linkage scan for reading disability and attention-deficit/hyperactivity disorder localizes pleiotropic loci. (2005) (108)
Introduction to behavioral genetics (1973) (108)
Genome-wide screening for DNA variants associated with reading and language traits (2014) (108)
Genetic structure of the LXS panel of recombinant inbred mouse strains: a powerful resource for complex trait analysis (2004) (107)
Open-field behavior in mice: Selection response and situational generality (1970) (106)
Genetic and environmental influences on early literacy (2006) (106)
Genetic models of reading disability (1980) (106)
Genetic and environmental contributions to general cognitive ability through the first 16 years of life. (2004) (104)
Adoption results for self-reported personality: evidence for nonadditive genetic effects? (1998) (101)
Parent-offspring resemblance for cognitive abilities in the Colorado Adoption Project: Biological, adoptive, and control parents and one-year-old children (1981) (100)
Genetic and Environmental Influences on Vocabulary and Reading Development (2011) (99)
Gene X environment interactions in reading disability and attention-deficit/hyperactivity disorder. (2009) (99)
Preschool twin study of the relation between attention-deficit/hyperactivity disorder and prereading skills (2006) (97)
Dopamine transporter polymorphism associated with externalizing behavior problems in children. (2002) (96)
Colorado Learning Difficulties Questionnaire: validation of a parent-report screening measure. (2011) (94)
Mapping quantitative trait loci for behavioral traits in the mouse (1992) (91)
Reading disability and hyperactivity disorder: Evidence for a common genetic etiology (1995) (91)
Response to early literacy instruction in the United States, Australia, and Scandinavia: A behavioral-genetic analysis. (2008) (90)
Quantitative trait locus mapping in laboratory mice derived from a replicated selection experiment for open-field activity. (2001) (87)
Comorbidity of Mathematics and Reading Deficits: Evidence for a Genetic Etiology (1997) (86)
Longitudinal Study of Reading Disability and Attention-Deficit/Hyperactivity Disorder: Implications for Education. (2007) (85)
TDT-association analysis of EKN1 and dyslexia in a Colorado twin cohort (2005) (83)
Temperament and Problem Behaviour during Early Childhood (1999) (83)
Gender ratios among reading-disabled children and their siblings as a function of parental impairment. (1992) (83)
Multiple regression analysis of twin data obtained from selected samples (1986) (82)
The genetics of cognitive abilities and disabilities. (1998) (82)
Genetics of specific cognitive abilities. (1976) (79)
Fine mapping of the chromosome 2p12-16 dyslexia susceptibility locus: quantitative association analysis and positional candidate genes SEMA4F and OTX1 (2002) (78)
Quantitative trait loci for ethanol sensitivity in the LS X SS recombinant inbred strains: Interval mapping (1996) (77)
Etiology of Reading Difficulties and Rapid Naming: The Colorado Twin Study of Reading Disability (2001) (77)
Genetic and environmental influences on prereading skills and early reading and spelling development in the United States, Australia, and Scandinavia (2006) (73)
A behaviour-genetic analysis of orthographic learning, spelling and decoding (2008) (71)
Behavioral Genetics and the Fine Structure of Mouse Populations: A Study in Microevolution (1972) (70)
Test of Alternative Hypotheses Explaining the Comorbidity Between Attention-Deficit/Hyperactivity Disorder and Conduct Disorder (2008) (70)
Family background, cognitive ability, and personality as predictors of educational and occupational attainment. (1983) (69)
Colorado Reading Project: An update. (1991) (69)
Home environment and cognitive ability of 7-year-old children in the Colorado adoption project : genetic and environmental etiologies (1990) (68)
DNA Evidence for Strong Genome-Wide Pleiotropy of Cognitive and Learning Abilities (2013) (67)
Genome-wide association scan identifies new variants associated with a cognitive predictor of dyslexia (2018) (67)
Comparing the Relationships Among Two Different Versions of Alphanumeric Rapid Automatized Naming and Word Level Reading Skills (2002) (67)
Cognitive Abilities in Families with Reading Disabled Children (1980) (67)
A Family Based Association Study of DRD4, DAT1, and 5HTT and Continuous Traits of Attention-Deficit Hyperactivity Disorder (2011) (65)
Genetic influences on reading difficulties in boys and girls: the Colorado twin study. (2006) (65)
A Behavioral-Genetic Analysis of Reading Disabilities and Component Processes (2000) (64)
Genetic etiology of comorbid reading difficulties and ADHD. (2003) (63)
Parent-offspring and sibling adoption analyses of parental ratings of temperament in infancy and childhood. (1991) (63)
Genetic Stability of Cognitive Development from Childhood to Adulthood. (1987) (62)
Etiology of reading difficulties as a function of gender and severity (2006) (61)
Genotype-environment interaction in children's adjustment to parental separation. (2003) (61)
Genetic and environmental influences on the rate of communicative development in the first year of life. (1981) (60)
Colorado longitudinal twin study of reading disability (2007) (58)
Word reading and reading comprehension: stability, overlap and independence (2008) (55)
Multivariate Path Analysis of Specific Cognitive Abilities Data at 12 Years of Age in the Colorado Adoption Project (1998) (55)
Development genetic analysis of general cognitive ability from 1 to 12 years in a sample of adoptees, biological siblings, and twins (2003) (55)
Genetics of reading disability. (1993) (55)
Heritability of High Reading Ability and its Interaction with Parental Education (2009) (54)
Genetic and environmental influences on temperament in middle childhood: analyses of teacher and tester ratings. (1996) (53)
Sex-by-generation and ethnic group-by-generation interactions in the Hawaii Family Study of Cognition (1982) (53)
Covariation of Mathematics Achievement and General Cognitive Ability in Twins (2000) (52)
Preliminary results from a longitudinal preschool twin study of early reading development (2002) (50)
Brain morphometry in reading-disabled twins (1999) (49)
Stability of Genetic and Environmental Influences on Reading Performance at 7, 12, and 16 Years of Age in the Colorado Adoption Project (2001) (49)
Parent-offspring resemblance for reading performance at 7, 12 and 16 years of age in the Colorado Adoption Project. (2002) (48)
Continuity and Change in General Cognitive Ability from 1 to 7 years of Age. (1992) (48)
Pleiotropic Effects of Albinism on Open Field Behaviour in Mice (1969) (48)
Reading performance and general cognitive ability: A multivariate genetic analysis of twin data. (1990) (47)
Path analysis of IQ during infancy and early childhood and an index of the home environment in the Colorado Adoption Project (1988) (47)
Tester-rated temperament at 14, 20 and 24 months: Environmental change and genetic continuity (1996) (46)
Commingling and segregation analysis of reading performance in families of normal reading probands (1994) (46)
Response to 20 generations of selection for open-field activity in mice. (1974) (46)
Genetic mediation of longitudinal associations between family environment and childhood behavior problems (1995) (45)
Origins of individual differences in infancy (1985) (45)
Multivariate genetic analysis of specific cognitive abilities in the Colorado adoption project at age 7 (1992) (45)
Heritability of alcohol preference in laboratory mice and rats. (1970) (45)
Genome-wide association study reveals new insights into the heritability and genetic correlates of developmental dyslexia (2020) (45)
Differential Genetic Etiology of Reading Component Processes as a Function of IQ (2002) (44)
Heritability of the Length of the Gestation Period in Dairy Cattle (1959) (44)
Are Genetic Correlations and Environmental Correlations Correlated? (1970) (43)
Confirmatory factor analysis of word recognition and process measures in the Colorado Reading Project (1991) (42)
Group differences and first principal-component loadings in the Hawaii family study of cognition: a test of the generality of ‘Spearman's hypothesis’ (1984) (41)
Assortative marriage for specific cognitive abilities in two ethnic groups. (1976) (41)
Multivariate analysis of quantitative trait loci influencing variation in anxiety-related behavior in laboratory mice (2004) (40)
Genetic and environmental etiologies of the longitudinal relations between prereading skills and reading. (2015) (40)
Behavioral genetics '97: ASHG statement. Recent developments in human behavioral genetics: past accomplishments and future directions. (1997) (40)
Parent-offspring resemblance for specific cognitive abilities in Korea (1978) (39)
Effects of illumination on open-field behavior in mice. (1968) (38)
Choice of Reading Comprehension Test Influences the Outcomes of Genetic Analyses (2011) (38)
Identification of Candidate Genes for Dyslexia Susceptibility on Chromosome 18 (2010) (38)
Modeling the Etiology of Individual Differences in Early Reading Development: Evidence for Strong Genetic Influences (2013) (38)
Characterization of the DYX2 locus on chromosome 6p22 with reading disability, language impairment, and IQ (2014) (38)
Similar Polymorphism of Taste Sensitivity to PTC in Mice and Men (1970) (37)
Etiology of covariation between reading and mathematics performance: a twin study (1999) (37)
Genetic Covariation Between Brain Volumes and IQ, Reading Performance, and Processing Speed (2010) (36)
Early age-related cognitive impairment in mice lacking cannabinoid CB 1 receptors (2005) (36)
Differential Genetic Etiology of Reading Difficulties as a Function of IQ: An Update (2010) (35)
Multivariate genetic analysis of ‘environmental’ influences on infant cognitive development (1986) (35)
Genetic correlations between reading performance and IQ in the Colorado Adoption Project (1990) (35)
Multivariate behavioral genetic analysis of achievement and cognitive measures in reading-disabled and control twin pairs. (1998) (35)
Genotype-environment correlation and IQ (1987) (34)
Use of repeated measures in an analysis of ethanol-induced loss of righting reflex in inbred long-sleep and short-sleep mice. (1995) (34)
PRENATAL MATERNAL STRESS IN MICE. DIFFERENTIAL EFFECTS ON BEHAVIOR. (1964) (34)
Quantitative-Trait Locus for Specific Language and Reading Deficits on Chromosome 6 p (1999) (33)
Genome-Wide Polygenic Scores Predict Reading Performance Throughout the School Years (2017) (33)
Ethanol-induced anesthesia in inbred strains of long-sleep and short-sleep mice: A genetic analysis of repeated measures using censored data (1995) (33)
The Colorado Longitudinal Twin Study of Reading Difficulties and ADHD: Etiologies of Comorbidity and Stability (2015) (33)
Individual differences during the second year of life: The MacArthur Longitudinal Twin Study: Individual differences in infancy: Reliability, stability, prediction (1990) (32)
Development of open‐field behavior in mice: Effects of age and experience (1968) (32)
Genetic and environmental influences on writing and their relations to language and reading (2013) (32)
Reading Performance and Verbal Short-Term Memory: A Twin Study of Reciprocal Causation. (1995) (32)
Ethanol dependence in mice: Direct and correlated responses to ten generations of selective breeding (1984) (32)
Genetic and environmental influences on temperament in middle childhood (1996) (31)
Understanding Comorbidity Between Specific Learning Disabilities. (2019) (31)
Individual differences in sensitivity to nicotine in mice: Response to six generations of selective breeding (1994) (31)
Genetic etiology of spelling deficits in the Colorado and London twin studies of reading disability (1991) (31)
Genetic and environmental influences on rapid naming and reading ability: A twin study (2001) (30)
Nature, nurture, and the transition to early adolescence (2003) (30)
Etiology of the Stability of Reading Difficulties: The Longitudinal Twin Study of Reading Disabilities (2007) (30)
Colorado Reading Project: Past, Present, and Future (1991) (30)
Etiology of reading deficits in learning disabilities: Quantitative genetic analysis. (1991) (29)
Genetic Correlations, Environmental Correlations, and Behavior (1979) (29)
Individual differences in infancy: Reliability, stability, prediction (1990) (29)
Common and specific gender influences on individual differences in reading performance: a twin study (1998) (29)
Differential effects of prenatal maternal stress on offspring behavior in mice as a function of genotype and stress. (1967) (28)
Cognitive abilities in reading-disabled children: a longitudinal study. (1984) (28)
Familial patterns of impairment in reading disability. (1977) (27)
Molarity not modularity: Multivariate genetic analysis of specific cognitive abilities in parents and their 16-year-old children in the colorado adoption project * (1999) (27)
A Parent-Offspring Adoption Study of Cognitive Abilities in Early Childhood. (1985) (26)
Developmental patterns of seizure susceptibility in inbred strains of mice. (1976) (26)
Reading performance and general cognitive ability in twins with reading difficulties and control pairs (1997) (25)
A Twin and Family Study of the Association Between Immune System Dysfunction and Dyslexia Using Blood Serum Immunoassay and Survey Data (1998) (25)
Genetic etiology of reading difficulties in boys and girls. (2005) (25)
Little epistasis for anxiety-related measures in the DeFries strains of laboratory mice (2004) (23)
Cognitive Abilities in Children with Reading Disabilities and Controls: A Follow-Up Study (1988) (23)
Multivariate genome-wide association study of rapid automatised naming and rapid alternating stimulus in Hispanic American and African–American youth (2019) (23)
Differential prognosis of reading-disabled children as a function of gender, socieconomic status, IQ, and severity: A longitudinal study (1989) (23)
Reading disability in boys and girls: No evidence for a differential genetic etiology (2000) (23)
Discovery of 42 genome-wide significant loci associated with dyslexia (2021) (22)
Differential Genetic Aetiology of Reading Disability as a Function of Age (1989) (22)
Developmental Contexts in Middle Childhood: Genetic and Environmental Influences on Continuity and Change in Reading Achievement in the Colorado Adoption Project (2006) (22)
The Nature and Nurture of High IQ (2013) (22)
Chapter 2 – Quantitative Aspects of Genetics and Environment in the Determination of Behavior (1972) (22)
Colorado family reading study: Longitudinal analyses (1983) (22)
The genetic and environmental etiologies of individual differences in early reading growth in Australia, the United States, and Scandinavia. (2013) (22)
PRENATAL MATERNAL INFLUENCE OF BEHAVIOR IN MICE: EVIDENCE OF A GENETIC BASIS. (1964) (21)
The genetic and environmental etiologies of the relations between cognitive skills and components of reading ability. (2016) (21)
Genetic and environmental covariance structures among WISC-R subtests: A twin study (1987) (21)
Influences of School Environment on the Academic Achievement Scores of Adopted and Nonadopted Children. (1993) (20)
Covariation among measures of cognitive ability and academic achievement in the Colorado Adoption Project: Sibling analysis (1995) (20)
DeFries–Fulker Analysis of Longitudinal Reading Performance Data from Twin Pairs Ascertained for Reading Difficulties and from Their Nontwin Siblings (2011) (20)
Cognitive abilities in the early school years: No effects of shared environment between parents and offspring (1989) (20)
Causal Models of Reading Disability: A Twin Study (2004) (20)
Investigating the effects of copy number variants on reading and language performance (2016) (19)
Factor Analysis Of Genetic And Environmental Correlation Matrices. (1978) (19)
Validity of self-reported reading disability by parents of reading-disabled and control children (1989) (19)
The Developmental Etiology of High IQ (2009) (19)
Conduct Problems in Adopted and Non-Adopted Adolescents and Adoption Satisfaction as a Protective Factor (2011) (19)
Assortative marriage for specific cognitive abilities in Korea. (1976) (19)
A twin study of the etiology of high readingability (2002) (19)
Design, Utility, and History of the Colorado Adoption Project: Examples Involving Adjustment Interactions (2013) (18)
Multiple regression analysis of twin and sibling data (1987) (18)
Colorado reading project: Longitudinal analyses (1988) (17)
Operant discrimination learning and operant bar-pressing rates in inbred and heterogeneous laboratory mice (1974) (17)
Genome-wide estimates of inbreeding in unrelated individuals and their association with cognitive ability (2013) (16)
Open-field behavior in mice: Analysis of maternal effects by means of ovarian transplantation (1967) (14)
Correction: Identification of Candidate Genes for Dyslexia Susceptibility on Chromosome 18 (2010) (14)
Etiology of Neuroanatomical Correlates of Reading Disability (2000) (14)
Factorial validation of a telephone test battery of specific cognitive abilities (1992) (13)
Etiologies and Molecular Mechanisms of Communication Disorders (2010) (13)
Genetic and Environmental Influences on Word Recognition and Spelling Deficits as a Function of Age (2007) (13)
Testing for Neuropsychological Endophenotypes in Siblings Discordant for ADHD (2009) (13)
Genetic and Environmental Etiologies of Reading Difficulties: DeFries-Fulker Analysis of Reading Performance Data from Twin Pairs and Their Non-Twin Siblings. (2012) (12)
Parental contributions to longitudinal stability of cognitive measures in the Colorado Family Reading Study. (1983) (12)
Parent-infant resemblance for general and specific cognitive abilities in the Colorado adoption project ☆ (1985) (11)
APOE effects on cognition from childhood to adolescence (2019) (11)
Recent Developments in Human Behavioral Genetics : Past Accomplishments and Future Directions (2007) (11)
Parental Education Moderates Genetic Influences on Reading (2008) (11)
Longitudinal Connections Between Parenting and Peer Relationships in Adoptive and Biological Families (2003) (10)
Causal models of reading disability: a twin study. (2004) (10)
Publication Trends Over 55 Years of Behavioral Genetic Research (2016) (10)
Genome-wide analyses of individual differences in quantitatively assessed reading- and language-related skills in up to 34,000 people (2022) (10)
Differential genetic etiology of reading disability as a function of mathematics performance (1996) (9)
Substance experimentation in the Colorado Adoption Project (1997) (9)
Validity of school history as a diagnostic criterion for reading disability (1989) (9)
A TWIN STUDY OF GENDER: INFLUENCED INDIVIDUAL DIFFERENCES IN GENERAL COGNITIVE ABILITY (1998) (9)
Genetic Etiologies of Comorbidity and Stability for Reading Difficulties and ADHD: A Replication Study (2016) (8)
Enrichment of putatively damaging rare variants in the DYX2 locus and the reading-related genes CCDC136 and FLNC (2017) (8)
Genetic and environmental etiologies of reading disability: A twin study (1988) (7)
The development of observed shyness from 14 to 20 months: Shyness in context.: Infancy to early childhood: Genetic and environmental influences on developmental change. (2001) (7)
Erratum: Multiple regression analysis of twin data: A model-fitting approach (Behavior Genetics (1992) 22 (489-497)) (1993) (7)
Reading Disability: A Model for the Genetic Analysis of Complex Behavioral Disorders (1990) (7)
Genome-wide association analyses of individual differences in quantitatively assessed reading- and language-related skills in up to 34,000 people (2021) (7)
Multivariate Parent-Offspring Analyses of Specific Cognitive Abilities (2003) (7)
Examining the Influence of Perceived Stress on Developmental Change in Memory and Perceptual Speed for Adopted and Nonadopted Individuals (2018) (6)
Open-field behavior in mice: effect of litter size. (1977) (6)
Cluster analytic classification of reading disability subtypes (1989) (6)
A multivariate twin study of early literacy in Japanese Kana. (2013) (6)
Gender differences in cognitive abilities of reading-disabled twins (1990) (6)
Self-reported reading problems in parents of twins with reading difficulties. (2000) (5)
CATSLife: A Study of Lifespan Behavioral Development and Cognitive Functioning (2019) (5)
DeFries–Fulker and Pearson–Aitken Model-fitting Analyses of Reading Performance Data from Selected and Unselected Twin Pairs (2008) (5)
MAXIMUM VARIANCE LINEAR COMBINATIONS FROM PHENOTYPIC, GENETIC, AND ENVIRONMENTAL COVARIANCE MATRICES. (1970) (5)
Cognitive Abilities in Childhood and Adolescence (2014) (5)
Components of the GABA system in mice selectively bred for differences in open-field activity (1980) (5)
Erratum: DCDC2 is associated with reading disability and modulates neuronal development in the brain (Proceedings of the National Academy of Sciences of the United States of America (November 22, 2005) 102, 47 (17053-17058)) DOI: 10.1073/pnas.0508591102 (2005) (5)
Colorado Learning Difficulties Questionnaire (2011) (4)
A Longitudinal Adoption Study of Substance Use Behavior in Adolescence (2016) (4)
Gender differences in cognitive abilities of opposite-sex and same-sex twin pairs with reading disabilty (1996) (4)
Familial resemblance for measures of reading performance in families of reading-disabled and control twins (1994) (4)
Multivariate genome-wide association study of rapid automatized naming and rapid alternating stimulus in Hispanic and African American youth (2017) (4)
A Developmental-Genetic Analysis of Continuity and Change in the Bayley Mental Development Index from 14 to 24 Months (1994) (4)
Path analysis of general and specific cognitive abilities in the Colorado adoption project: Early childhood (1988) (4)
Family History as an Indictor of Risk for Reading Disability (1984) (4)
Adoption designs for the study of complex behavioral characters: Genetic aspects of speech and language disorders (1983) (4)
“Heritability Estimates” from family data (1978) (4)
Multivariate analysis of cognitive and temperament measures in 24-month-old adoptive and nonadoptive sibling pairs (1988) (4)
Whole-Genome Sequencing of Inbred Mouse Strains Selected for High and Low Open-Field Activity (2020) (4)
Etiology of the Stability of Reading Performance from 7 to 12 Years of Age and Its Possible Mediation by IQ (2003) (4)
A Hua He Inoa: Hawaiian Culture-Based Celestial Naming (2019) (3)
Nature and nurture during infancy and early childhood: Individual differences and group differences (1988) (3)
Genotype–environment correlation (1988) (3)
Nature, Nurture, and Adolescent Development (2003) (3)
Etiology of the stability of reading performance from 7 to 12 years of age in the Colorado adoption project. (1999) (3)
Haseman and Elston Sib-Pair Linkage Analysis: A Brief Historical Note (2010) (3)
Genetic and environmental etiologies of reading difficulties: DeFries-Fulker analysis of reading performance data from twin pairs and their nontwin siblings. (2012) (3)
Multivariate Familial Analysis of Cognitive Measures in the Colorado Family Reading Study. (1985) (2)
Linkage, association, and mutation analysis of EKN1 and dyslexia in a Colorado twin cohort (2005) (2)
In Search of Cognitive Promotive and Protective Factors for Word Reading (2020) (2)
DNA Evidence for Strong Genome-Wide Pleiotropy of Cognitive and Learning Abilities (2013) (2)
Multiple Regression Analysis of Reading Performance Data from Twin Pairs with Reading Difficulties and Nontwin Siblings: The Augmented Model (2012) (2)
Parent-offspring resemblance for adult general cognitive ability in the Colorado Adoption Project. (1996) (2)
Nature and nurture during infancy and early childhood: Transitions and changes: genetic and environmental etiologies (1988) (2)
Genetic influence on communication development: A sibling adoption study of two and three year olds (1992) (1)
Reading performance at 7, 12 and 16 years of age in the Colorado Adoption Project: Parent-offspring analyses. (2001) (1)
The Genetics of Cognitive Abilities and Disabilities Investigations of specific cognitive skills can help clarify how genes shape the components of intellect (1999) (1)
Taste sensitivity to phenylthiourea (ptc) in inbred strains of mice. Abstr. (1968) (1)
Etiology of covariation between measures of speeded and perceptual processes and reading performance: A twin study. (1997) (1)
Open-field behavior in mice. A quantitative genetic analysis. Abstr. (1967) (1)
Findings from the Colorado Adoption Project (2007) (1)
DISCUSSION. THE CONSTRUCTION AND USE OF GAS METERS. (1)
Hypothesis-driven genome-wide association studies provide novel insights into genetics of reading disabilities (2022) (1)
Genetic and environmental influences on early literacy development in Australia, Scandinavia, and the United States (2006) (1)
Racial and cultural differences in sensitivity to flickering light. (1973) (1)
GENETIC EFFECTS OF GAMMA-IRRADIATION ON EGG PRODUCTION AND ADULT EMERGENCE OF DROSOPHILA MELANOGASTER. (1964) (1)
Sex differences in QTLs operating on multiple behavioral assessments of anxiety in laboratory mice. (2002) (1)
Erratum to: Publication Trends Over 55 Years of Behavioral Genetic Research (2017) (1)
Ability and heritability: investigating the continuous effect of IQ score on IQ etiology in multiple samples (2010) (1)
The Internal and External Validity of Sluggish Cognitive Tempo and its Relation with DSM–IV ADHD (2013) (1)
The variability of response to selection. I. Interline and intraline variability in a population of Drosophila affinis selected for body weight. (1961) (1)
Do the Genetic Effects for Literacy in Early Childhood Differ Across Sex or Across the Disabled and Normal Range (2008) (1)
Effects of prenatal maternal stress on behavior in mice. A genotype- -environment interaction. Abstr. (1964) (1)
Nature and nurture during infancy and early childhood: Quantitative genetics as the basis for a general theory of individual differences (1988) (0)
LITERACY Genetic and Environmental Influences on Early Literacy (2006) (0)
Characterization of the DYX2 locus on chromosome 6p22 with reading disability, language impairment, and IQ (2014) (0)
Mathematics Difficulties and Psychopathology in School-Age Children (2022) (0)
Learning-based and "static" measures in early literacy : A behavior-genetic analysis (2006) (0)
CATSLife: A Study of Lifespan Behavioral Development and Cognitive Functioning – Corrigendum (2019) (0)
Fitting sibling and parent–offspring models in the Colorado Adoption Project (1988) (0)
Erratum to: Publication Trends Over 55 Years of Behavioral Genetic Research (2017) (0)
QTL analysis of fear related behaviour in mice. (2000) (0)
Enrichment of putatively damaging rare variants in the DYX2 locus and the reading-related genes CCDC136 and FLNC (2017) (0)
Nature and nurture during infancy and early childhood: The Colorado Adoption Project (1988) (0)
The Effect of Parental Education on the Heritability of Children’s Reading Disability (2022) (0)
Genetics and Mouse Aggression (2017) (0)
Self-reported reading problems in parents of twins with reading difficulties (2000) (0)
Nature and nurture during infancy and early childhood: Genetics and measures of the family environment: the nature of nurture (1988) (0)
Mapping quantitative trait loci for behavioral traints in the mouse (1993) (0)
Longitudinal twin study of literacy and language-Recent findings and implications (2004) (0)
APOE EFFECTS ON COGNITION FROM MIDDLE CHILDHOOD TO THE CUSP OF MIDDLE ADULTHOOD. (2017) (0)
Introduction to model fitting (1988) (0)
Nature and nurture during infancy and early childhood: Conclusions (1988) (0)
Locating genes for reading disability (2008) (0)
A "maternal effect" on body weight in Drosophila. (1961) (0)
Notes on Preparations for the Sick (1896) (0)
Colorado Family Reading Study: An Overview (2021) (0)
Genetics of Animal and Human Behavior (2019) (0)
Genetic Etiology of Reading Difficulties in Boys and Girls (2005) (0)
Introductory statement (1972) (0)
Eti ol ogy of covar i ati on betw een r eadi ng and mathemati cs per for mance: a tw i n study (2007) (0)
Genetic and environmental influences on writing and their relations to language and reading (2011) (0)
Whole-Genome Sequencing of Inbred Mouse Strains Selected for High and Low Open-Field Activity (2020) (0)
Investigating the effects of copy number variants on reading and language performance (2016) (0)
Publication Trends Over 55 Years of Behavioral Genetic Research (2016) (0)
Book Review (1981) (0)
Books received (1997) (0)
Inter-Line and Intra-Line Variability in a Population of Drosophila Subjected to Two Intensities of Selection in Each of Two Directions (1961) (0)
Nature and nurture during infancy and early childhood: References (1988) (0)
IRotea on preparations for tbe Sick , The Pasteur Filter ( Chamberland ) . ? (0)
Papers to Appear in Forthcoming Issues (1998) (0)
Author Correction: Discovery of 42 genome-wide significant loci associated with dyslexia (2023) (0)
Gene by environment interactions in the etiology of individual differences and group deficits in reading development (2007) (0)
Nature and nurture during infancy and early childhood: Transitions and changes: description and prediction (1988) (0)
Twin studies of spelling: A new look at where poor spellling comes from and what to do about it (1991) (0)
Publisher's note (2004) (0)
Papers to Appear in Forthcoming Issues (1997) (0)

This paper list is powered by the following services:

John Clarence Defries's Academic­Influence.com Rankings

Why Is John Clarence Defries Influential?

John Clarence Defries's Published Works

Published Works

John Clarence Defries's AcademicInfluence.com Rankings