This systematic review examined 14 U.S. studies published since 2000 reporting prevalence estimates for intellectual disability (ID) or developmental disability (DD). Prevalence rates for children were between 11.0 and 13.4 per 1,000 for ID and between 45.8 and 69.9 per 1,000 for DD using data from 2010 or later. A 2015 Ohio study of adults…

Background: Unintentional injuries are the leading cause of youth morbidity. However, limited nationally representative data are available to characterize the occurrence of unintentional injuries at US schools. Given this paucity, we characterized secular trends in unintentional injuries at schools that led to emergency department (ED) visits.…

An emerging body of research documents a relationship between sleep quantity and delinquency during adolescence. Absent from this line of research, however, is an evaluation of whether the associations between sleep duration and different forms of delinquency vary across periods of adolescence and sex. The current study aimed to address this gap…

Objectives: Autistic children frequently exhibit irritability, which can manifest as aggression, self-injurious behaviour, and severe tantrums, leading to significant impairments. Two atypical antipsychotics have been licensed by the Food and Drug Administration for the treatment of irritability in autistic children, although a significant…

Background: In the United States, 68% of children do not get the recommended nine hours of sleep, which can lead to many negative health outcomes (e.g., mental health). Mindfulness meditation mobile apps may be an option for improving children's sleep and mental health outcomes; however, there is limited research on how children across different…

Working memory and recognition memory develop across adolescence, but the relationship between them is not fully understood. We investigated associations between n-back task performance and subsequent recognition memory in a community sample (8-30 yr, n = 150) using tasks from the Adolescent Brain Cognitive Development Study (ABCD Study) to…

The last decades of neuroimaging research has revealed atypical development of intrinsic functional connectivity within and between large-scale cortical networks in autism spectrum disorder, but much remains unknown about cortico-subcortical developmental connectivity atypicalities. This study examined cortico-striatal developmental intrinsic…

Investigating socioeconomic status (SES) biases, Nepalese children and adolescents (N = 605, 52% girls, M[subscript age] = 13.21, SD[subscript age] = 1.74) attending schools that varied by SES composition were asked to anticipate whether a peer would include a high or low SES character as a math partner. Novel findings were that students attending…

The aim of this study is to examine the effects of life kinetic exercises on the performance of floor curling athletes. A total of 40 volunteer women, 20 in the experimental group and 20 in the control group, residing in the city center of Gaziantep, aged between 14 and 16 and doing floor curling, participated in the study. Life kinetic exercise…

We developed age- and sex-specific smoothed percentiles for vertical and long jump, as well as vertical jump power, in healthy 10-18 year olds (n = 529, 47.1% female). Jump height and distance were measured and vertical jump power was assessed via mechanography. LMS regression was used to create smoothed age-specific reference curves, separated by…

This study evaluated test-equating methods to enable comparisons and conversions between the vertical jump (VJ) and standing long jump (SLJ) tests. A total of 528 youth (280 males) performed VJ and SLJ, and their scores were randomly split as the calibration (C) sample (n = 478) and cross-validation (CV) sample (n = 50). SLJ scores of the C sample…

Social media may promote health and social connectedness, but its misuse and frequency of use may pose risks. Social media use during adolescence requires parental monitoring and mediation to mitigate potentially harmful effects such as depression, anxiety, and risk-taking behaviors. While parents and health care professionals convey concern…

Holistic processing (HP) of faces refers to the obligatory, simultaneous processing of the parts and their relations, and it emerges over the course of development. HP is manifest in a decrement in the perception of inverted versus upright faces and a reduction in face processing ability when the relations between parts are perturbed. Here,…

This study examined differences in generalized and social anxiety symptoms across two age groups of children with autism spectrum disorder (ASD) while accounting for overall anxiety level, gender, and intellectual functioning. Older children (12-18 years) expressed more overall and social anxiety symptoms than younger children (6-11 years), and…

Despite empirical and epidemiological research indicating that risk taking propensity increases across adolescence, it is unknown whether this is true for positive risk taking. Additionally, adolescents' decisions are heavily influenced by their social environment, but it is unclear to what extent social influences are associated with positive…