Genetic and environmental influences on the covariation between hyperactivity and conduct disturbance in juvenile twins
Article Abstract:
Covariation between hyperactivity and conduct disturbances in juvenile twins is due to genetic factors. In younger males and females, same set of genes are responsible for the variations in hyperactivity and conduct disturbances. However, in the older twins some of the genetic effects are behavior and gender specific. This indicates that the two behaviors fail to represent the same latent psychiatric condition.
Publication Name: Journal of Child Psychology and Psychiatry and Allied Disciplines
Subject: Psychology and mental health
ISSN: 0021-9630
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
The impact of child IQ parent IQ and sibling IQ on child behavioural deviance scores
Article Abstract:
A study of an epidemiological sample of 411 13-year-old twins of normal intelligence revealed behavioral disorders to be independent of variations of IQ levels among siblings and deficient IQ levels to be correlated with more psychopathology in the subjects. Problem behavior in children is attributed more to biological factors and less with psychosocial factors such as parents' IQ.
Publication Name: Journal of Child Psychology and Psychiatry and Allied Disciplines
Subject: Psychology and mental health
ISSN: 0021-9630
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
The Croyden Assessment of Learning study: Prevalence and educational identification of mild mental retardation
Article Abstract:
The prevalence of low IQ in the mental retardation range in a population sample is estimated and the factors that relate to educational identification are examined. The results indicated a high estimate of the prevalence of mild intellectual disability and highlighted the fact that the majority of mild intellectual disability in the UK would not be detected using registers.
Publication Name: Journal of Child Psychology and Psychiatry
Subject: Psychology and mental health
ISSN: 0021-9630
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Genetic and environmental influences on victims, bullies and bully-victims in childhood. Predicting early fatherhood and whether young fathers live with their children: prospective findings and policy reconsiderations
- Abstracts: Genetic and environmental influences on conduct disorder: Symptom, domain and full-scale analyses. Sibling-based association analyses of the serotonin transporter polymorphism and internalizing behavior problems in children
- Abstracts: Genetic and environmental influence on language impairment in 4-year-old same-sex and opposite-sex twins. Genetic influences on early word recognition abilities and disabilities: A study of 7-year-old twins
- Abstracts: A cross-cultural examination of the relationship between materialism and individual values. Integrating ethics and altruism with economics, or altruism, economics and Hume's dictum - a response to Morris Altman
- Abstracts: Ethnic differences in relations between family process and child internalizing problems. Emotion regulation strategies in offspring of childhood-onset depressed mothers