K C Jacobson
Affiliation: Virginia Commonwealth University
- Genetic and environmental influences on the relationships between family connectedness, school connectedness, and adolescent depressed mood: sex differencesK C Jacobson
Department of Human Development and Family Studies, Pennsylvania State University, USA
Dev Psychol 35:926-39. 1999..Genetic factors also contributed to the correlations between family and school environment and adolescent depressed mood, although, again, these factors were stronger for female than for male adolescents...
- Sex differences in the genetic and environmental influences on the development of antisocial behaviorKristen C Jacobson
Virginia Institute for Psychiatric and Behavioral Genetics, USA
Dev Psychopathol 14:395-416. 2002..We speculate that sex differences in timing of puberty may account for the earlier presence of genetic effects among females...
- Sex differences in genetic and environmental risk factors for irrational fears and phobiasK S Kendler
Virginia Institute for Psychiatric and Behavioral Genetics, Richmond, USA
Psychol Med 32:209-17. 2002..How does sex impact on the familial transmission of liability to fears and phobias?..
- Illicit drug use and abuse/dependence: modeling of two-stage variables using the CCC approachA Agrawal
Department of Human Genetics, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Box 980003 Suite 1 154, Richmond, VA 23298 0003, USA
Addict Behav 30:1043-8. 2005..Finally, sexes could be equated for all illicit drugs. The findings of this study emphasize the need for models that can partition the sources of individual differences into common and stage-specific influences...
- A twin study of personality and illicit drug use and abuse/dependenceArpana Agrawal
Virginia Institute of Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Depts Of Human Genetics and Psychiatry, Richmond, USA
Twin Res 7:72-81. 2004..NS was most closely related to cannabis use while N showed significant genetic overlap with sedative use. NS in males appears to be a good indicator of risk for cannabis use. This result may be useful for candidate gene studies...
- Genetic and shared environmental influences on adolescent BMI: interactions with race and sexK C Jacobson
Department of Human Development and Family Studies, Pennsylvania State University, University Park 16802, USA
Behav Genet 28:265-78. 1998..Likewise, nonadditive genetic influences are indicated for Black females, but not for White females or males. Implications of these results are discussed...
- A twin study of sex differences in social supportA Agrawal
Medical College of Virginia of Virginia Commonwealth University, Virginia Institute for Psychiatric and Behavioral Genetics, Department of Human Genetics, Richmond 23298, USA
Psychol Med 32:1155-64. 2002..A relationship between social roles and personality with social support suggests possible sex effects on the sources of individual differences in social support...
- Genetic and environmental bases of childhood antisocial behavior: a multi-informant twin studyLaura A Baker
Department of Psychology, University of Southern California, Los Angeles, CA 90089 1061, USA
J Abnorm Psychol 116:219-35. 2007..This is the first study to demonstrate strong heritable effects on ASB in ethnically and economically diverse samples...
- Genetic influence on contrast sensitivity in middle-aged male twinsAlice Cronin-Golomb
Department of Psychology, Boston University, 648 Beacon St, 2nd Floor, Boston, MA 02215, USA
Vision Res 47:2179-86. 2007..Identifying the types of individual-specific events that impact contrast sensitivity may suggest interventions to modulate this ability and thereby improve overall quality of life as adults age...
- Genes, environment, and time: the Vietnam Era Twin Study of Aging (VETSA)William S Kremen
Department of Psychiatry, University of California San Diego, San Diego, CA, USA
Twin Res Hum Genet 9:1009-22. 2006....
- Genetics of body mass stability and risk for chronic disease: a 28-year longitudinal studyCarol E Franz
Department of Psychiatry, University of California San Diego, La Jolla, California 92093, United States of America
Twin Res Hum Genet 10:537-45. 2007..Our results also provide prospective evidence that early excess BMI may have serious long-term health consequences, and that this risk is not limited to minorities or adults of lower socioeconomic status...
- Is there heterogeneity among syndromes of substance use disorder for illicit drugs?Cheryl Beseler
Center for Behavioral Genomics, Department of Psychiatry, University of California, 9500 Gilman Drive, Mail Code 0603, La Jolla, San Diego, CA 92093, and Veterans Medical Research Foundation, La Jolla 92161, USA
Addict Behav 31:929-47. 2006....
- A twin-study of genetic contributions to hearing acuity in late middle ageArthur Wingfield
Department of Psychology, Brandeis University, Waltham, MA 02454 9110, USA
J Gerontol A Biol Sci Med Sci 62:1294-9. 2007..Declines in hearing acuity, especially in the high frequency range, often appear in middle age. The objective of this study was to characterize genetic and environmental influences that may underlie this pattern...
- Genetic and environmental influences on illicit drug use and tobacco use across birth cohortsKenneth S Kendler
Virginia Institute for Psychiatry and Behavioral Genetics and Department of Psychiatry, Medical College of Virginia Commonwealth University, Richmond, VA 23298 0126, USA
Psychol Med 35:1349-56. 2005..One theory, which postulates that heritability of deviant traits increases in permissive environments, predicts a positive relationship across cohorts between prevalence and heritability of substance use...
- Personality and comorbidity of common psychiatric disordersAmir A Khan
Mental Health and Behavioral Sciences Service, Providence VA Medical Center, 830 Chalkstone Ave, Providence, RI 02908, USA
Br J Psychiatry 186:190-6. 2005..We know little about the degree to which comorbidity, socommonly seen among psychiatric disorders, arises from variation in normal personality...
- Level of family dysfunction and genetic influences on smoking in womenKenneth S Kendler
Department of Psychiatry, Medical College of Virginia Virginia Commonwealth University, Richmond, VA 23298 0126, USA
Psychol Med 34:1263-9. 2004..An adoption study of alcoholism suggests that in women, the impact of genetic risk factors become greater in the presence of conflict in the family of origin. Is the same true for cigarette smoking (CS)?..
- Stability, consistency, and heritability of electrodermal response lability in middle-aged male twinsAndrew Crider
Department of Psychology, Williams College, Williamstown, Massachusetts, USA
Psychophysiology 41:501-9. 2004..We discuss these findings in terms of an information processing account of individual differences in phasic EDR activation...
- A population based twin study of sex differences in depressive symptomsArpana Agrawal
Department of Human Genetics, Virginia Commonwealth University, Virginia Institute for Psychiatric and Behavioral Genetics, Richmond 23298, USA
Twin Res 7:176-81. 2004..Our analyses suggest that while there may be mean differences in the levels of depressive symptoms across sexes, the genetic and environmental factors that predispose males and females to depressive symptoms are not different...
- Sources of individual differences in stressful life event exposure in male and female twinsP Kevin Bolinskey
Medical College of Virginia Commonwealth University, Richmond, USA
Twin Res 7:33-8. 2004..Genetic correlations between males and females suggest that many of the same genetic factors are acting within both genders...
- Specificity of genetic and environmental risk factors for use and abuse/dependence of cannabis, cocaine, hallucinogens, sedatives, stimulants, and opiates in male twinsKenneth S Kendler
Virginia Institute for Psychiatric and Behavioral Genetics, USA
Am J Psychiatry 160:687-95. 2003..Data on use and misuse of six classes of illicit substances by male twin pairs were used to examine whether genetic and shared environmental risk factors for substance use disorders are substance-specific or -nonspecific in their effect...
- Creating a social world: a developmental twin study of peer-group devianceKenneth S Kendler
Virginia Institute of Psychiatric and Behavioral Genetics, Virginia Commonwealth University Medical School, VA 23298 0126, USA
Arch Gen Psychiatry 64:958-65. 2007..Peer-group deviance is strongly associated with externalizing behaviors. We have limited knowledge of the sources of individual differences in peer-group deviance...
- Passive-aggressive (negativistic) personality disorder: a population-based twin studyNikolai Czajkowski
Division of Mental Health, Norwegian Institute of Public Health, Oslo, Norway
J Pers Disord 22:109-22. 2008....
- PennTwins: a population-based cohort for twin studiesEmil F Coccaro
Clinical Neuroscience and Psychopharmacology Research Unit, Department of Psychiatry, The University of Chicago, 5841 S Maryland Avenue, Chicago, IL 60637, USA
Twin Res Hum Genet 9:998-1005. 2006..Thus, despite a relatively low overall response rate (12% of all twins born in Pennsylvania from 1959-1978), there is no evidence that the sample differs in any meaningful respect from the larger population...
- A discordant twin study of premorbid cognitive ability in schizophreniaWilliam S Kremen
Institute of Behavioral Genomics, Department of Psychiatry, University of California, San Diego, 9500 Gilman Drive, La Jolla, 92093 0603, USA
J Clin Exp Neuropsychol 28:208-24. 2006..Educational advancement may be slightly slowed by this familial vulnerability, but results were equivocal with regard to attenuation of one's ultimate educational attainment...
- Heritability of word recognition in middle-aged men varies as a function of parental educationWilliam S Kremen
Department of Psychiatry, Institute of Behavioral Genomics, University of California, San Diego, La Jolla, CA 92093 0603, USA
Behav Genet 35:417-33. 2005..Our results suggest that shared environmental factors in families with low parental education have long-lasting effects on word recognition ability, well beyond any critical period for developing reading proficiency...
- Ordered subsets linkage analysis of antisocial behavior in substance use disorder among participants in the Collaborative Study on the Genetics of AlcoholismKristen C Jacobson
Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, Illinois 60637, USA
Am J Med Genet B Neuropsychiatr Genet 147:1258-69. 2008..Nonetheless, replication of these results in other samples is essential...