J. Hewitt

Publications350
h-index73
Citations18,965
Highly Influential Citations1,000
Claim Author Page
Author pages are created from data sourced from our academic publisher partnerships and public sources.

Recommended Authors

  • K. Kendler
  • 1,408 Publications, 131,092 Citations
  • N. Martin
  • 1,590 Publications, 111,649 Citations
  • D. Boomsma
  • 1,664 Publications, 98,256 Citations
  • R. Corley
  • 219 Publications, 10,452 Citations
  • Publications
  • Influence
Individual differences in executive functions are almost entirely genetic in origin.
Recent psychological and neuropsychological research suggests that executive functions--the cognitive control processes that regulate thought and action--are multifaceted and that different types of… Expand
  • 1,070
  • 120
  • PDF
Not All Executive Functions Are Related to Intelligence
Accumulating evidence suggests that executive functions (EFs) are related to intelligence, despite neuropsychological results initially considered evidence of no such relation. However, findings that… Expand
  • 990
  • 93
  • PDF
Combined linkage and association sib-pair analysis for quantitative traits.
An extension to current maximum-likelihood variance-components procedures for mapping quantitative-trait loci in sib pairs that allows a simultaneous test of allelic association is proposed. The… Expand
  • 445
  • 33
  • PDF
Genetics and developmental psychopathology: 2. The main effects of genes and environment on behavioral problems in the Virginia Twin Study of Adolescent Behavioral Development.
Little is known about the contribution of genetic and environmental factors to risk for juvenile psychopathology. The Virginia Twin Study of Adolescent Behavioral Development allows these… Expand
  • 475
  • 32
Behavioral disinhibition: liability for externalizing spectrum disorders and its genetic and environmental relation to response inhibition across adolescence.
Behavioral disinhibition has been characterized as a generalized vulnerability to externalizing disorders. Despite increasing evidence for its validity and heritability, the structural stability of… Expand
  • 319
  • 23
  • PDF
Genetic and environmental influences on behavioral disinhibition.
Comorbidity among childhood disruptive behavioral disorders is commonly reported in both epidemiologic and clinical studies. These problems are also associated with early substance use and other… Expand
  • 422
  • 22
  • PDF
Genetic and environmental influences on substance initiation, use, and problem use in adolescents.
BACKGROUND We conducted a sibling/twin/adoption study of substance initiation, use, and problem use, estimating the relative contribution of genetic and environmental influences on these phenotypes… Expand
  • 353
  • 22
  • PDF
Substance use, abuse and dependence in adolescence: prevalence, symptom profiles and correlates.
We present data on the lifetime prevalence of substance use, abuse and dependence in adolescents obtained through structured psychiatric interviews and self-report questionnaires. Most notably, we… Expand
  • 315
  • 21
The heritability of general cognitive ability increases linearly from childhood to young adulthood
Although common sense suggests that environmental influences increasingly account for individual differences in behavior as experiences accumulate during the course of life, this hypothesis has not… Expand
  • 452
  • 21
  • PDF
Candidate Gene–Environment Interaction Research
  • D. Dick, A. Agrawal, +6 authors K. Sher
  • Psychology, Medicine
  • Perspectives on psychological science : a journal…
  • 1 January 2015
Studying how genetic predispositions come together with environmental factors to contribute to complex behavioral outcomes has great potential for advancing the understanding of the development of… Expand
  • 210
  • 20
  • PDF