Sentences with phrase «twin study of»

Background The possible causes of greater depression among adolescent girls were investigated by examining variation in the influence of genetic and environmental risk factors among 182 prepubertal female, 237 prepubertal male, 314 pubertal female, and 171 pubertal male twin pairs from the Virginia Twin Study of Adolescent Behavioral Development.

The main effects of genes and environment of behavioral problems in the Virginia Twin Study of Adolescent Behavioral Development

The possible causes of greater depression among adolescent girls were investigated by examining variation in the influence of genetic and environmental risk factors among 182 prepubertal female, 237 prepubertal male, 314 pubertal female, and 171 pubertal male twin pairs from the Virginia Twin Study of Adolescent Behavioral Development.

A twin study of hyperactivity — I.

To further explore the influence of genetic and environmental risk factors on adolescent depression, particularly among adolescent girls, data on depression in prepubertal and pubertal male and female same - sex twins from the Virginia Twin Study of Adolescent Behavioral Development were analyzed.

The main effects of genes and environment on behavioral problems in the Virginia Twin Study of Adolescent Behavioral Development

The Virginia twin study of adolescent behavioral development.

The main effects of genetics and environment of behavioral problems in the Virginia twin study of adolescent behavioral development

A twin study of hyperactivity 1.

Heterogeneity among juvenile antisocial behaviours: findings from the Virginia twin study of adolescent behaviour.

A twin study of the association between pathological gambling and antisocial personality disorder.

A population - based twin study of major depression in women: the impact of varying definitions of illness

A twin study of infant attachment security at age 24 months was conducted on archival data for a sample of 99 MZ pairs and 108 DZ pairs from the Louisville Twin Study.

A twin study of marital status and alcohol consumption.

It is difficult to compare our findings with studies of general population youth because rates vary widely, depending on the sample, the method, the source of data (participant or collaterals), and whether functional impairment was required for diagnosis.50 Despite these differences, our overall rates are substantially higher than the median rate reported in a major review article (15 %) 50 and other more recent investigations: the Great Smoky Mountains Study (20.3 %), 56 the Virginia Twin Study of Adolescent Behavioral Development (142 cases per 1000 persons), 57 the Methods for the Epidemiology of Child and Adolescent Mental Disorders (6.1 %), 32 and the Miami — Dade County Public School Study (38 %).58 We are especially concerned about the high rates of depression and dysthymia among detained youth (17.2 % of males, 26.3 % of females), which are also higher than general population rates.51,56 - 61 Depressive disorders are difficult to detect (and treat) in the chaos of the corrections milieu.

Twin study of the etiology of comorbidity between reading disability and atten - tion - deficit / hyperactivity disorder.

A longitudinal twin study of fears from middle childhood to early adulthood: evidence for a developmentally dynamic genome

Twin pairs (N = 1350), aged 8 to 16 years, in the general population - based Virginia Twin Study of Adolescent Behavioral Development were assessed using the Child and Adolescent Psychiatric Assessment interview administered separately to both twins and both parents.

A longitudinal twin study of insomnia symptoms in adults.

«This is by far the largest twin study of gene expression ever published, enabling us to make a roadmap of genes versus environment,» Sullivan says, adding that the study measured relationships with disease more precisely than had been previously possible, and uncovered important connections to recent human evolution and genetic influence in disease.

Past twin studies of autism had flaws, however.

Classic twin studies of the past focused primarily on the similarities in identical siblings, especially in the relatively rare pairs who were raised apart.

Twin studies of child temperament using objective measures consistently suggest moderate heritability for most dimensions.

Most of the existing twin studies of attachment overviewed here have not been designed to focus on attachment, therefore they are quite heterogeneous regarding children's age and the method of assessment.

Although twin studies of attachment are providing mixed results, molecular genetic studies are showing that specific genetic polymorphisms of the dopaminergic and serotonergic neurotransmisson systems may moderate the statistically identified links between caregivers» behaviour and infant attachment.

Not exact matches

This discovery was made by studying the differences in creative thinking between sets of twins.

Cases of identical twins separated at birth who were outlined in this study indicated that only one third of our ability to think creatively is genetic.

In the case, the twins alleged that Facebook founder Mark Zuckerberg took from their idea of a social network platform, which they developed while studying at Harvard University.

Dispassionate readers, who have studied the Galileo caricature of a war between science and religion will know that, apart from that sorry, somewhat isolated affair, the Catholic Church and the science lab have long been conjoined twins in the advancement of knowledge.

Correction: In describing J. Michael Bailey's study of identical - twin pairs in his «Same - Sex Science» (February), Stanton L. Jones should have referred to 41 rather than 42 pairs studied.

In support of the argument that at least sometimes sexual orientation is a condition of birth, Bruni describes how «One landmark study looked at gay men's brothers and found that 52 % of identical twin brothers were also gay.»

A recent twin study found that in the case of identical twins, who have identical genetics, If one of the twins is gay their is about a 50 % chance that the other twin will identify as gay.

In the history of U.S. Catholic higher education since World War II, three seminal moments stand out: Msgr. John Tracy Ellis's 1955 article, «American Catholics and the Intellectual Life»; the 1967 Land O» Lakes statement, «The Idea of a Catholic University»; and the day Don J. Briel began the Catholic Studies Program — and the Catholic Studies movement — at the University of St. Thomas in the Twin Cities.

By the end of the eighteenth century, the twin challenges of the natural sciences, along with their philosophical interpreters, and of scientific historical study profoundly challenged the credibility of received forms of Christian faith.

Energy from macronutrient and food group intakes at 21 mo of age: the Gemini twin cohort (whole study population and consumers) 1

«What it's like to be a man working in a childcare centre»: case study of twins Jack and Nick, by Claire Stephens (March 2016) for The Motherish.

Chamomile attended Evergreen University in Olympia Washington and then the University of Minnesota Twin Cities graduating with a Bachelor's Degree in Women Studies with a minor in Dance.

So far, the studies of specific genes have shown conflicting results as to whether they cause hyperovulation or increase the chance of having fraternal twins.

Population studies have shown that some groups of people have twins much more frequently, while twins are rare among other groups.

A 2011 study showed that the highest rates of twinning were found in Central African populations, with the country of Benin producing the most twins.

And a twin study — using the tools of behavioral genetics — found that genetic factors had a negligible impact on the development of theory of mind skills (Hughes et al 2005).

JonaRose Feinberg: And I have heard again I don't have studied about this but anecdotally it seems like identical twins are more likely to put themselves on a similar schedule both in terms of the sleep week and then later on in terms of their developmental milestones and things like that.

Using studies of twins who had been separated at birth, yet displayed remarkably similar characteristics of personality despite differences in environment, Harris demonstrated the importance of genetic predisposition as a factor in human development.

A study published in the journal Fertility and Sterility found that mothers with a high BMI (body mass index) were significantly more likely to have fraternal twins than women of normal weight.

This represents not only her twenty years of studying and teaching choice theory around the country but also her twenty years of parenting her identical twin sons.

Specifically, a 2012 study by suggested that 28.6 percent and 9.3 percent of mothers undergoing ovarian stimulation experienced twin and higher - order pregnancies, respectively.

However, it should be mentioned that in that same study, the risk of miscarriage for women using IVF who carried twins was just 18 %, which is within the typical range of miscarriage risk for natural conception.

According to one study, identical twins made up 0.95 percent of the pregnancies conceived with treatment.

The main issues in Australia regarding homebirth centre around the risks to the baby, with higher perinatal mortality rates reported in some studies of homebirth [14, 15] however these studies have included women with risk factors (e.g., twins, medical complications), so it is difficult to draw conclusions about low - risk women [14, 16].

Another study showed that delivering a second twin by cesarean because he's not in the head - down position poses a risk of infection and provides no clear benefit for the infant or its mother.