Charting the Impact of Autism and Bilingualism for Autistic and Non-Autistic Children, 2018-2020

Davis, Rachael and Montgomery, Lewis and Rabagliati, Hugh and Sorace, Antonella and Fletcher-Watson, Sue (2022). Charting the Impact of Autism and Bilingualism for Autistic and Non-Autistic Children, 2018-2020. [Data Collection]. Colchester, Essex: UK Data Service. 10.5255/UKDA-SN-855431

Many children in the UK grow up in homes where more than one language is spoken. Understanding the effect of this 'bilingual exposure' on children's abilities is challenging, but research so far largely shows that learning more than one language does not hinder child development, and can be beneficial. As well as the obvious advantage of knowing two languages, bilingualism has been associated with better insight into the thoughts and feelings of others. Other skills are hotly contested by researchers but may include greater ability to switch between tasks and control behaviour. These skills are useful both in the classroom, and in the playground. We know much less about how hearing two languages affects the development of children with autism spectrum disorder (ASD). ASD is associated with difficulties with communication, relating to other people and a desire for repetition and routine. Many practitioners and parents have reported that they are concerned that difficulties linked to autism, especially in communication, may be made worse if a child uses or hears more than one language. In addition, it is often assumed that speaking two languages is too taxing for a child who has an intellectual disability - which applies to about half of all children with ASD. However these assumptions are untested. Fifty years ago, it was also assumed that growing up in a bilingual home was a bad idea for all children, and yet we now know that that is untrue. Might it therefore also be the case that hearing or speaking more than one language is also OK for children with ASD? And, more speculatively, could bilingualism even create learning opportunities in the autistic population? After all, the benefits linked to bilingualism (like better insight into other people's minds) are in the same areas as those which are often impaired in autism. This project will provide unique, valuable information about how bilingual exposure affects both children with autism and their non-autistic peers. We will recruit about 180 children aged 4-12 years for a comprehensive assessment at two time points, one year apart. Children will all come from bilingual households but amount and type of exposure will vary widely, as will their confidence speaking each language. This will allow us to identify the impact of hearing, learning and speaking two languages on developmental change and learning in both groups. Our tests will focus on characteristics of autism, as well as skills which could be linked to a bilingual advantage. Drawing on our own previous work in this area, in which we interviewed bilingual parents of children with autism, we will also assess the social and family consequences of bilingualism such as impact on quality of life, community integration and access to services. In order to properly understand how bilingualism affects children with intellectual disability (who may have a very small spoken vocabulary and whose understanding may be hard to measure accurately) we will also develop new ways to measure language using recordings of eye movements instead of traditional tests. During this project we will create: - knowledge about the role of hearing and speaking more than one language on development and learning, in children with autism and without; - a contribution to theories about how children learn language, and to psychological models of autism; - evidence-based guidelines for parents, teachers and therapists; - new ways to research language in children with learning disability In particular, seeing the same children at two appointments, one year apart, with thorough assessment by a team of experts at each meeting, and including children with a range of types of language experience can address many of the key questions in bilingualism research. Moreover, the study will provide hints about whether exposure to more than one language at a young age could provide a natural learning opportunity for children with autism.

Data description (abstract)

The overall aim of this research is to ask how growing up in a bilingual environment affects the linguistic, cognitive and social development of children and, importantly, do these developmental effects differ for children with autism spectrum disorders. Here we collected data from autistic and non-autistic children at two timepoints, one year apart, (November 2018 - September 2020) in order to understand the influence of bilingual exposure on changes in cognitive development.

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