The lack of a valid and interpretable score to track early child development over time is a primary reason for neglecting child development in policymaking. Many instruments exist, but there is no accepted method for comparing their scores across different ages, samples, and instruments. This paper aims (1) to enhance the Development Score…

Previous literature has suggested the existence of a close relationship between individuals' intellectual abilities and their cognitive profile, understood as their performance in tasks tapping into the different cognitive domains. This relationship has typically been discussed in populations characterized as having high intellectual abilities, as…

Background: Deafness is the most common sensory impairment in human beings, with significant social and psychological implications. Several questionnaires were designed to evaluate the social and emotional abilities of English-speaking deaf children. This study's objective was to create Arabic questionnaires to assess the social abilities of…

Twins regularly score nearly a standard deviation below the population mean on standardized measures of cognitive development in infancy but recover to the population mean by early childhood, making rapid gains through the toddler years. To date, only polynomial growth models have been fit to model cognitive recovery across childhood, limiting the…

Difficulties with social conversation can be a direct result of the social skills deficit in individuals with autism spectrum disorders (ASD). The popularity of hand-held devices and the development of commercial apps has expanded the scope of teaching social skills via this modality. This study extends an earlier pilot study in which a…