Non-Word Repetition and Vocabulary in Arabic-Swedish-Speaking 4–7-Year-Olds with and without Developmental Language Disorder

The Arabic-speaking community in Sweden is large and diverse, yet linguistic reference data are lacking for Arabic-Swedish-speaking children. This study presents reference data from 99 TD children aged 4;0–7;11 on receptive and expressive vocabulary in the minority and the majority language, as well as for three types of non-word repetition (NWR) tasks. Vocabulary scores were investigated in relation to age, language exposure, and socio-economic status (SES). NWR performance was explored in relation to age, type of task, item properties, language exposure, and vocabulary. Eleven children with DLD were compared to the TD group. Age and language exposure were important predictors of vocabulary scores in both languages, but SES did not affect vocabulary scores in any language. Age and vocabulary size had a positive effect on NWR accuracy, whilst increasing item length and presence of clusters had an adverse effect. There was substantial overlap between the TD and DLD children for both vocabulary and NWR performance. Diagnostic accuracy was at best suggestive for NWR; no task or type of item was better at separating the two groups. Reports from parents and teachers on developmental history, language exposure, and functional language skills emerged as important factors for correctly identifying DLD in bilinguals.