Although autism spectrum disorder (ASD) is a heterogeneous disorder, recently more homogeneous phenotypic subgroups, which still lack evidence, have been identified. Our goal is to describe and analyse different behavioural profiles of ASD, in social communication and interaction (SCI) and restricted and repetitive behaviours and interests…

Using a sample of healthy youth (n = 466, 10 to 18 yr), we report the predictive utility of vertical jump power (VJ Power, W) for predicting bone strength. We measured VJ Power using mechanography and an indicator of bone strength, i.e., height-adjusted total bone mineral content less head (TBLH BMC, g), using DXA. Growth curve models were used to…

We developed plank test standards, based on trunk lean mass-to-fat mass (LM/FM) ratio, in a sample of healthy Portuguese 10--18 year olds (n = 474, 46.4% female). Height and weight were measured and muscular endurance was assessed using the prone plank test. Trunk LM/FM ratio was determined using dual-energy x-ray absorptiometry. Plank standards…

Society needs transdisciplinary citizens with good scientific literacy. One way to achieve this could be through the use of areas or subjects for which students have more affinity and expertise. This study seeks to maximize the chemistry learning of students who want to be musicians, through the use of analogies. Analogies are a powerful tool to…

This study examined the predictive validity of musculoskeletal fitness tests for identifying sarcopenia in youth. The sample was 529 participants age 10 to 18 years. Indices included: total lean body mass (LBM) normalized for height (LBM index, LBMI, kg/m2), appendicular LBMI (aLBMI, kg/m[superscript 2]), and LBM to fat body mass (FBM) ratio…

Previous research on gender differences in young people's digital development has shown that boys and girls differ in frequency and type of internet use, but vital gaps in the literature remain. In recent years, gender is increasingly considered to be a multidimensional concept with a growing number of young people identifying as non-binary (i.e.…

We examined the type of errors on multiplication and division computation problems of 326 rising fifth graders enrolled in four elementary schools in Northern Portugal. We further examined whether there was a difference in the number of errors across age and whether there was an association between students' performance on number knowledge and…

Foodborne diseases are a global burden, are preventable, and young people are a key population for behaviour change as they gain autonomy. This study aimed to explore young people's needs across several European countries in relation to learning about and implementing food hygiene and food safety. Qualitative focus groups and interviews were…

The OECD's new Study on Social and Emotional Skills aims to provide policy makers, educators, families and communities with a comprehensive set of tools to foster students' social and emotional learning. The Study's assessment framework -- presented in this paper -- is a result of an extensive literature review of previous research, existing…