Cooperative behaviours by definition are those that provide some benefit to another individual. Allonursing, the nursing of non-descendent young, is often considered a cooperative behaviour and is assumed to provide benefits to recipient offspring in terms of growth and survival, and to their mothers, by enabling them to share the lactation load. However, these proposed benefits are not well un...

BACKGROUND Adolescence Pregnancy is a social problem worldwide with serious implication of maternal and child health. This study purposed to compare the maternal and neonatal outcome of the teenage mothers (15- 19 years) with that of the young mothers (20-24 years) to determine if adolescent pregnancies have increased risk of adverse outcomes. OBJECTIVES This study aims to find out the outcom...

In primates, including humans, mothers engage in face-to-face interactions with their infants, with frequencies varying both within and across species. However, the impact of this variation in face-to-face interactions on infant social development is unclear. Here we report that infant monkeys (Macaca mulatta) who engaged in more neonatal face-to-face interactions with mothers have increased so...

The association among mothers', fathers', and infants' risk and cognitive and social behaviors at 24 months was examined using structual equation modeling and data on 4,200 on toddlers and their parents from the Early Childhood Longitudinal Study, Birth Cohort. There were 3 main findings. First, for cognitive outcomes, maternal risk was directly and indirectly linked to it through maternal sens...

The efficacy of the Incredible Years parent and child training programs is established in children diagnosed with oppositional defiant disorder but not among young children whose primary diagnosis is attention-deficit/hyperactivity disorder (ADHD). We conducted a randomized control trial evaluating the combined parent and child program interventions among 99 children diagnosed with ADHD (ages 4...

This article uses data from the Fragile Families and Child Wellbeing Study to examine whether family instability is associated with changes in perceived social support, material hardship, maternal depression, and parenting stress among mothers of young children. In addition to accounting for the number of transitions that a mother experiences during the first five years of her child's life, we ...

OBJECTIVE To evaluate the association between social anxiety disorder (SAD) and perceived maternal bonding styles among young women during pregnancy and 30 months after childbirth. METHODS A cohort of young women from the city of Pelotas, Brazil was followed up from pregnancy to 30 months postpartum. The Mini Neuropsychiatric Interview Plus was used to assess SAD and the Parental Bonding Inst...

STUDY OBJECTIVE To investigate the influence of social class in childhood, young adulthood and middle age, and intergenerational mobility, on adult central and total obesity. DESIGN Prospective, population based, birth cohort study. PARTICIPANTS AND SETTING 1472 men and 1563 women born in 1946 in England, Scotland, and Wales. OUTCOME MEASURES Waist-hip ratio, waist-height ratio, waist cir...

Research on the experiences of lesbian, gay, bisexual, transgender, and queer (LGBTQ) youth with LGBTQ parents is absent in the social science literature. The present qualitative, exploratory study utilized a social constructionist and queer theoretical lens through which to explore the sexual/gender identity formation and disclosure experiences of 18 LGBTQ young adults with lesbian/bisexual mo...