Biopsychosocial correlates of body satisfaction in 7- to 8-year old children: a cross-sectional and prospective investigation.

Background: Biopsychosocial factors have been associated with body satisfaction/dissatisfaction and related body image concerns in adolescence; however, few studies have investigated these relationships in middle childhood, an important developmental phase for body satisfaction. This study investigated relationships between a range of biological (body mass index), psychological (child anxiety/depression, self-esteem, and self-oriented and socially prescribed perfectionism) and sociocultural (mother's body dissatisfaction and comments about child's appearance, father's body dissatisfaction and comments about child's appearance, peer teasing and child's media exposure) factors and body satisfaction cross-sectionally and longitudinally in a sample of 7- and 8-year-old children.

Methods: In this study, participants from the longitudinal Children's Body Image Development Study (in which children had been followed-up annually from 3 years old) were assessed by interview at 7 years old (Time 1; n = 293: girls = 167, boys = 126) and 8 years old (Time 2; n = 222; girls = 126, boys = 96) and their parents completed a questionnaire at each time point.

Hindlimb locomotor biomechanics of the derived therizinosaur Nothronychus: Functional changes in the line to birds and convergence with large-bodied neornitheans.

Nothronychus graffami was a large therizinosaur represented by a single well-preserved individual from the Turonian Tropic Shale of southern Utah. It is characterized by an enlarged abdomen, small tail, and an extensively pneumatized axial skeleton, and is frequently regarded as herbivorous. Given the overall tail reduction and the development of a wide fused synsacrum with widely spaced acetabulae, it is reconstructed with an anteriorly rotated femur and a displaced resting ground reaction force anterior to the center of mass.

Mothers' Violence Experiences and Provision of Emotional Support Following Child Sexual Abuse.

Emotional support from a non-offending caregiver, often the child's mother, is theorized to help buffer children from the consequences of child sexual abuse (CSA). However, many mothers struggle to provide effective emotional support, suggesting it may be important to assess for factors related to mothers' abilities to support their child. CSA frequently occurs in families that have experienced other types of violence, including intimate partner violence (IPV), and many mothers have their own personal history of child abuse.

Lifetime depression, sleep disruption and brain structure in the UK Biobank cohort.

Whether depression and poor sleep interact or have statistically independent associations with brain structure and its change over time is not known. Within a subset of UK Biobank participants with neuroimaging and subjective and/or objective sleep data (n = 28,351), we examined associations between lifetime depression and sleep disruption and their interaction with structural neuroimaging measures, both cross-sectionally and longitudinally. Sleep variables were: self-reported insomnia and difficulty getting up; actigraphy-derived short sleep (<7 h); sustained inactivity bouts during daytime (SIBD); and sleep efficiency.