Bilingualism and Speech Therapy: Does Speaking Two Languages Confuse Bilingual Children with Communication Disorders?

For several parents of bilingual children receiving speech therapy, the question of “Will speaking two languages confuse my child or slow down their progress?” has always been an area of concern to parents. And the reason for that may be because many families tend to believe that incorporating more than one language into their child’s speech session can hinder their ability to produce speech in either language. However, truth be told, the use of more than one language does not actually limit their ability to speak but rather, the use of incorporating both languages into a child’s speech session is extremely beneficial. Here’s why: 

Research shows that the brains of young children (including those with ASD) are equipped with the ability to learn multiple languages from a young age even if they present with speech or language difficulties. For example, one study found that although some bilingual children had smaller vocabulary sizes in each language, their combined vocabulary equaled and/or exceeded that of their monolingual peers. Additionally, the use of bilingualism not only improves cognitive flexibility, but it can also help with developing stronger problem-solving skills, and social understanding. Therefore, a child who is receiving speech and language bilingual services can learn and use both languages with support from family and professionals. 

So, what can you do to support bilingual language development at home? 

  • Keep using your native language. At the end of the day, it is part of your child’s identity and supports establishing strong family relationships/dynamics. 

  • Continue reading books, singing songs, and playing games in both languages 

  • Engage in turn-taking, vocabulary building, or sound production since language skills can transfer across both languages with the help of caregivers. 

  • Work with your speech-language pathologist (SLP) to reinforce skills in both languages, even if therapy sessions focus on one.

  • Celebrate language mixing. It is a sign your child is learning and using what they already know in their everyday lives. 


In conclusion, bilingualism is a strength and not a setback. Children who are learning to acquire both languages do not grow up confused. Rather, they are learning to navigate two systems at once, and with the right support, including the support of an SLP, many of these young children will thrive. Therefore, if you are raising a bilingual child with speech or language needs, rest assured: you are not holding them back, you are setting them up for success.

Author: Nayeli Dominguez M.S., CF-SLP

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