• Publications
  • Influence
Positive and negative affectivity and their relation to anxiety and depressive disorders.
TLDR
Findings in normal samples suggest that assessment of two broad mood factors—Negative Aflect (NA) and Positive Affect (PA) may improve their differentiation, and the results suggest that strengthening the PA component in depression measures may enhance their discriminative power. Expand
Genetic and environmental architecture of human aggression.
A meta-analysis was performed on data from 24 genetically informative studies by using various personality measures of aggression. There was a strong overall genetic effect that may account for up toExpand
Sibling imitation and contrast effects
  • G. Carey
  • Psychology, Medicine
  • Behavior genetics
  • 1 May 1986
TLDR
The types of data needed to analyze imitation and contrast effects and the potential power of resolving these components of variation are discussed. Expand
Twin imitation for antisocial behavior: implications for genetic and family environment research.
  • G. Carey
  • Medicine
  • Journal of abnormal psychology
  • 1992
TLDR
Methods of analysis that permit reciprocal twin interaction not only provide better statistical fits to the data but also yield estimates of heritability that agree with adoption data, suggesting that the genetic influence on registered criminality may be more modest than previously thought. Expand
Linkage analysis of quantitative traits: increased power by using selected samples.
TLDR
It is demonstrated that the use of selected samples (i.e., ascertainment of a proband with an extreme score on the quantitative measure) can dramatically increase power, especially when proband selection is performed on the tail of a distribution with an infrequent recessive gene. Expand
Genetic and Environmental Architecture of Human Aggression
A meta-analysis was performed on data from 24 genetically informative studies by using various personality measures of aggression. There was a strong overall genetic effect that may account for up toExpand
Genetic and environmental determinants of musical ability in twins
TLDR
In the young adults in this sample, musical ability is influenced more by shared family environment than by shared genes, and marital assortment was not of sufficient magnitude to account for these common environment effects. Expand
Cholesky Problems
TLDR
Simulations demonstrate that the Cholesky parameterization procedure is sometimes valid, but at other times: (1) may not produce fit statistics that are distributed as a χ2; or (2) if the distribution of the fit statistic is χ1, then the degrees of freedom (df) are not always the difference between the number of parameters in the general model less the numberof parameters in a constrained model. Expand
Inference about genetic correlations
  • G. Carey
  • Biology, Medicine
  • Behavior genetics
  • 1 May 1988
TLDR
It is suggested that a distinction be made between biological and statistical pleiotropism to promote more accurate communication about the genetic associations among traits. Expand
Variation in brain-derived neurotrophic factor (BDNF) gene is associated with symptoms of depression.
TLDR
An association between Val/Val genotype and higher levels of depression symptoms is found, distinct from an association between BDNF genotypes and diagnosis of depression, and may help to clarify the understanding of genetic liability to depression, which will ultimately lead to more nuanced and effective treatment strategies. Expand
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