The Southern California Twin Register at the University of Southern California

Baker, Laura A.; Barton, Mafalda; Raine, Adrian

doi:10.1375/136905202320906273

Cited by 40 publications

(38 citation statements)

References 1 publication

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“…The gender distribution of the birth cohort sample is comparable to that reported for twins located through school districts (Baker et al, 2002). As in the earlier school-based sample, the birth cohort shows an overrepresentation of Blacks and underrepresentation of Asians compared to Los Angeles County in general, which is most likely due to the different rates of twinning known in these two racial groups.…”

supporting

confidence: 63%

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The Southern California Twin Register at the University of Southern California: II

Baker¹,

Barton

Lozano

et al. 2006

twin res hum genet

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supporting

confidence: 63%

“…Details about the construction and composition of this register were provided in the previous special issue of this journal on twin registers (Baker et al, 2002). This article describes recent expansion of the twin register, along with an overview of a major longitudinal study of a representative sample of 605 twin pairs drawn from this register.…”

mentioning

confidence: 99%

The Southern California Twin Register at the University of Southern California: II

Baker¹,

Barton

Lozano

et al. 2006

twin res hum genet

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“…Participants in the Twin Register are volunteers, and families were ascertained primarily through local schools, both public and private, in Los Angeles and the surrounding communities-see Baker, Barton, and Raine (2002) for a detailed description of the recruitment process and Twin Register from which the twins were sampled. Families identified as having twins in the target age range were sent letters briefly describing the study and inviting them to participate.…”

Section: Participant Recruitmentmentioning

confidence: 99%

Genetic and environmental bases of childhood antisocial behavior: A multi-informant twin study.

Baker

Jacobson

Raine

et al. 2007

Journal of Abnormal Psychology

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147

115

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Genetic and environmental influences on childhood antisocial and aggressive behavior (ASB) during childhood were examined in 9-to 10-year-old twins, using a multi-informant approach. The sample (605 families of twins or triplets) was socioeconomically and ethnically diverse, representative of the culturally diverse urban population in Southern California. Measures of ASB included symptom counts for conduct disorder, ratings of aggression, delinquency, and psychopathic traits obtained through child self-reports, teacher, and caregiver ratings. Multivariate analysis revealed a common ASB factor across informants that was strongly heritable (heritability was .96), highlighting the importance of a broad, general measure obtained from multiple sources as a plausible construct for future investigations of specific genetic mechanisms in ASB. The best fitting multivariate model required informant-specific genetic, environmental, and rater effects for variation in observed ASB measures. The results suggest that parent, children, and teachers have only a partly "shared view" and that the additional factors that influence the "rater-specific" view of the child's antisocial behavior vary for different informants. This is the first study to demonstrate strong heritable effects on ASB in ethnically and economically diverse samples. Keywords antisocial behavior; aggression; genes; environment Why do some children grow up to be prosocial, law-abiding individuals, whereas others engage in patterns of disruptive, defiant, and delinquent behavior, even falling into the criminal justice system well before reaching adulthood? A plethora of studies have investigated the etiology of such individual differences, with abundant evidence demonstrating the importance of both social circumstances and biological risk factors in antisocial behavior across the life span (Baker, 1999;Raine, 1993Raine, ,2002Raine, Brennan, Farrington, & Mednick, 1997;Stoff, Breiling, & Maser, 1997). Among these risk factors, genetic and environmental influences have been of considerable interest and are likely to play a key role in our understanding of aggression and other antisocial behaviors and, thus, our ability to avert them.

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“…Most volunteer-based registers rely on advertising to recruit participants, and this is achieved using various media outlets, referrals by health professionals, and contact through twins clubs, parishes, schools and hospitals (Baker et al, 2002;Boomsma et al, 2002b;Hayakawa et al, 2002;Hopper, 2002;Jang et al, 2002;Spector & MacGregor, 2002;Spinath et al, 2002;Strassberg et al, 2002).…”

mentioning

confidence: 99%

The Western Australian Register of Childhood Multiples: Effects of Questionnaire Design and Follow-up Protocol on Response Rates and Representativeness

Hansen¹,

Alessandri

Croft

et al. 2004

Twin Res

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The Southern California Twin Register at the University of Southern California

Cited by 40 publications

References 1 publication

The Southern California Twin Register at the University of Southern California: II

The Southern California Twin Register at the University of Southern California: II

Genetic and environmental bases of childhood antisocial behavior: A multi-informant twin study.

The Western Australian Register of Childhood Multiples: Effects of Questionnaire Design and Follow-up Protocol on Response Rates and Representativeness

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