We undertook a genome-wide association study (GWAS) of parental longevity in European descent UK Biobank participants. For combined mothers' and fathers' attained age, 10 loci were associated (p<5*10-8), including 8 previously identified for traits including survival, Alzheimer's and cardiovascular disease. Of these, 4 were also associated with longest 10% survival (mothers age ≥90 years, fathe...

Because cross-species evidence suggests that high testosterone (T) may interfere with paternal investment, the relationships between men's transition to parenting and changes in their T are of growing interest. Studies of human males suggest that fathers who provide childcare often have lower T than uninvolved fathers, but no studies to date have evaluated how nighttime sleep proximity between ...

Although the effects of paternal alcoholism on the psychosocial adjustment of children are well documented, the impact of fathers' illicit drug abuse on their children is poorly understood. The purpose of this study was to compare the adjustment of children living in families with drug-abusing fathers (n = 40) with that of children with fathers who abused alcohol (n = 40) and children with non-...

OBJECTIVE To determine the sociodemographic and motivational characteristics of parents who volunteer their children for clinical research. DESIGN A questionnaire was administered to parents who volunteered their children for a randomised, double blind, placebo controlled trial of a drug to treat asthma and to a control group of parents whose children were eligible for the trial but had refus...

Relatively few investigators have compared and contrasted the characteristics of different kinds of relationships in children's social networks. In the present study, 199 fifthand sixth-grade children completed Network of Relationships Inventories, which assessed 10 qualities of their relationships with mothers, fathers, siblings, grandparents, friends, and teachers. Consistent with Weiss's (19...

&nbsp; Background: Head lice infestation is one of the most common parasitic infections with a long history in the world . The purpose of this study was to determine the prevalence of head lice infestation among 3-6 years old children going to nursery schools in Kashan, Iran in 2009. &nbsp; Materials and Methods: This cross-sectional study was performed on 1200 children having the age range ...

Studies on grandparental investment have revealed that mothers' fathers are emotionally closer to their grandchildren than are fathers' mothers. In the current study, it was hypothesized that this difference is caused by the fact that fathers' mothers often have the potential to invest in genetically more certain kin (children through their daughters). To test this hypothesis, 787 participants ...

Using family systems theory as a theoretical framework, we investigated direct and indirect associations between type of disability, caregiver burden, and sibling relationships with structural equation modeling. We recruited 172 families raising typically developing children or a child with a disability. Participants volunteered at meetings and workshops for families of children with disabiliti...

The main aims of this study were to investigate inter-relationships among offending by three generations of relatives (fathers, mothers, sons, daughters, uncles, aunts, grandfathers and grandmothers) and the concentration of offending in families. This study also investigates how far criminal relatives predict a boy's delinquency. The parents of 1395 Pittsburgh boys aged 8, 11 or 14 reported ar...