Read this recently published meta-analysis in the American Journal of Speech-Language Pathology on the diagnostic accuracy of nonword repetition in bilingual children. https://pubs.asha.org/doi/abs/10.1044/2021_AJSLP-20-00237
Nonword repetition has been endorsed as a less biased method of assessment for children from culturally and linguistically diverse backgrounds, but there are currently no systematic reviews or meta-analyses on its use with bilingual children. The purpose of this study was to evaluate diagnostic accuracy of nonword repetition in the identification of language impairment (LI) in bilingual children.
Evidence suggests that nonword repetition may be a useful tool in the assessment and screening of LI in bilingual children, though it should be used in conjunction with other measures. Quasi-universal tasks demonstrate the potential to further reduce assessment bias, but extant research is limited.
Ortiz, J. A. (2021). Using nonword repetition to identify language impairment in bilingual children: A meta-analysis of diagnostic accuracy. American Journal of Speech-Language Pathology, 30(5), 2275-2295.