Background: Diadochokinetic (DDK) rate tasks are extensively used in the evaluation of speech disorders; however, it is unclear how the different types of speech stimuli affect DDK rate performance. Aims: To investigate the effect of age, gender and type of stimuli (non-words versus real words) on the DDK rates in individuals across the lifespan…

The purpose of the present study was to examine the extent to which social factors such as gender, age, organized sport participation and family wealth, influence adolescents' global self-worth and out-of-school physical activity (PA). Seven hundred twenty-one Greek students (346 boys and 375 girls), aged 14 to 16 years old (Mage = 14.97 ± 0.82…

Purpose: The aim of the present study was to identify the contribution of nutrition, physical activity (PA), and total energy intake and expenditure on body weight and composition in adolescents. Methods: Body composition, PA, and dietary intakes from 904 Greek adolescents (446 boys and 458 girls; Age: 14.6 ± 1.5 yrs), were evaluated. All…

We constructed and calibrated an instrument targeting conceptual and procedural fraction knowledge. We used this instrument in a quantitative study with 126 secondary students (7th and 9th graders), testing the hypothesis that there are individual differences in the way students combine the two types of knowledge. Cluster analysis revealed four…

A recurring question in the literature of heritage language acquisition, and more generally of bilingual acquisition, is whether all linguistic domains are sensitive to input reduction and to cross-linguistic influence and to what extent. According to the Interface Hypothesis, morphosyntactic phenomena regulated by discourse-pragmatic conditions…

Schools have a key role in promoting student social and emotional development and are encouraged to serve as a primary source of support, especially for those learners in need of special attention for addressing their needs. Young people's subjective emotional-social well-being is a general indicator of their mental health status. In this article,…

Background: A number of studies have suggested that language in individuals with Down syndrome (DS) may not be simply delayed compared with language in typically developing (TD) children, but deviant. The deviance has been detected in the comprehension of pronouns, and it has triggered proposals for the existence of a specific syntactic deficit in…

Participation in sports may influence negative body image and Social Physique Anxiety (SPA) as there is pressure by significant others to have a certain body image. The aim of the present study was to examine possible differences in SPA and perceived pressure to be thin between female preadolescent and adolescent ballet dancers, rhythmic…

In recently published studies on cyberbullying, students are frequently categorized into distinct (cyber)bully and (cyber)victim clusters based on theoretical assumptions and arbitrary cut-off scores adapted from traditional bullying research. The present study identified involvement classes empirically using latent class analysis (LCA), to…

In contemporary research on autonomy development, autonomy has been defined as independence (vs. dependence) or as self-endorsed (vs. controlled) functioning. Analogously, perceived parental autonomy support involves either perceived parental promotion of independence (PI) or perceived parental promotion of volitional functioning (PVF). The…

Body image is considered to be an obscure, mental representation of body shape, size and form which is influenced by a variety of factors that operate over varying time spans. Research has shown that professional female dancers may face preoccupations with their body image and weight. The present study aimed to investigate how body image was…

Age, gender and cross-national differences of children ages 8 through 16 in Greece (n = 400) and the United States (n = 5,400) are examined on four temperament styles: extroversion-introversion, practical-imaginative, thinking-feeling and organized-flexible styles. In general, Greek children prefer extroverted to introverted styles and organized…

The aim of this study is to describe the developmental, familial and educational characteristics of 91 children with a clinical diagnosis of autism spectrum disorders (ASDs), from one educational district of Athens, Greece. Records of the 91 children, aged 4-14 years old, were examined with respect to sex, age of diagnosis, type of ASDs, school…

The frequency of health care use is crucial for adolescent well-being and health systems. The present study was the first to test a set of variables in a representative sample of Greek adolescents in order to identify factors that predict health care use and contribute to improving health service planning. Questionnaires were administered to a…

Rating scale questionnaires were administered to 600 students in three age groups, 12-13, 15-16 and 20-21 from Japan, the UK, Greece and the USA. The questionnaires explored the extent of playing music while studying, the kinds of tasks when music was played, the perceived effects of music on studying, the characteristics and types of music played…