This study describes the profile of repetitive behaviour in individuals with Williams syndrome, utilising cross-syndrome comparisons with people with Prader-Willi and Down syndromes. The Repetitive Behaviour Questionnaire was administered to caregivers of adults with Williams (n = 96), Prader-Willi (n = 103) and Down (n = 78) syndromes. There were…

An increase in the number of children with speech-language pathology also having a genetic disorder imposes the need for speech and language pathologists (SLPs) to have sufficient knowledge about genetic basis of speech-language disorders. Research aim was to estimate in Serbian SLPs different aspects of theoretical and practical knowledge about…

The broader autism phenotype (BAP) is a term applied to individuals with personality and cognitive traits that are similar to but milder than those observed in autism spectrum disorder (ASD). Subtle autistic traits in the core diagnostic domains of social communication and rigid behavior were described in family members of people with an ASD even…

There is considerable variability in the extent to which young people with developmental language disorder (DLD) experience mental health difficulties. What drives these individual differences remains unclear. In the current article, data from the Twin Early Development Study were used to investigate the genetic and environmental influences on…

The current study took a multi-informant approach to compare parent to self-report ratings of social vulnerability of adults with Williams syndrome (WS). Participants included 102 pairs of adults with WS and their parents. Parents completed the "Social Vulnerability Questionnaire" and adults with WS completed an adapted version of the…

The prevalence of sleep problems in individuals with intellectual disability (ID) seems to vary between genetic syndromes associated with ID. Different types of sleep disturbances may indicate underlying causes of sleep problems and these types of sleep disturbances may vary between different genetic syndromes. We examined and compared five types…

The advances of modern biotechnology provide teachers with a number of opportunities to explore socioscientific issues, and in doing so to enhance students' reasoning skills. Although some attempt has been made to understand cultural differences in students' informal reasoning across international and regional boundaries, there is limited research…

Most of the individual difference variance in the population is found "within" families, yet studying the processes causing this variation is difficult due to confounds between genetic and nongenetic influences. Quasi-experiments can be used to test hypotheses regarding environment exposure (e.g., timing, duration) while controlling for…

Background and objectives: Attention deficit hyperactivity disorder is one of the common psychiatric disorder in childhood and it affects on children socially and academically. The aim of this study is to find out the prevalence of Attention deficit hyperactivity disorder among the studied population, describe its association with certain…

Studies of individuals with Cornelia de Lange syndrome (CdLS) have described changes in mood and behavior with age, although no empirical or longitudinal studies have been conducted. Caregivers of individuals with CdLS (N = 67), cri du chat syndrome (CdCS; N = 42), and Fragile X syndrome (FXS; N = 142) completed the Mood, Interest and Pleasure…

Few published studies have reported on the psychological well-being of family members of individuals with Rett syndrome (RTT). Eighty-seven mothers of girls and women with RTT completed a questionnaire survey about their daughters' behavioral phenotype, current health, and behavior problems, and their own and a sibling's well-being. Mothers…

Students' explanations of biological phenomena are frequently characterized by disconnects between levels and confusion of levels. The purpose of this research is to investigate the effects of a hands-on lab activity that aims at fostering the ability to reason across levels. A total of 197 students (18 years of age) participated in a randomized,…

Objective: There is clinical heterogeneity among the autism spectrum disorders (ASD). The presence of dysmorphology (minor physical anomalies; MPAs) is one possible tool for defining a clinically relevant subset in ASD. This study employs an adaptation of Miles and Hillman's (2000) classifications by using photographs to identify a subgroup with…

The primary objective of this paper is to find out whether the genetic concepts conveyed by cinema could encourage students' personal misconceptions in this area. To that end, two sources of conceptions were compared: the students' personal concepts (from a consolidated bibliography and from an experimental sample) and the concepts conveyed by…

Background: Self-injurious and aggressive behaviours are reported as components of some behavioural phenotypes but there are few studies comparing across syndrome groups. In this study we examined the prevalence of these behaviours and the associated person characteristics in seven genetic syndromes. Methods: Questionnaire data on self-injury and…