You're at a parent-teacher meeting, and the teacher mentions that your child's /w/ in English sounds like a /v/ — "very" instead of "werry," "vine" instead of "wine." Or the school speech screener flags your child for /θ/ — they say "dis" and "dat" instead of "this" and "that." You go home worried. Does your child have a speech disorder?
If your child is growing up with German or another language alongside English, the answer is almost certainly: no. What you're hearing is phonological transfer — one of the most well-documented and predictable phenomena in second language acquisition — and it is not a disorder. Understanding the difference between transfer and a true speech sound disorder is one of the most useful things any multilingual parent can know.
The Core Principle: Both Languages Tell the Story
The single most important clinical rule in bilingual speech assessment:
A true speech sound disorder appears in both languages. If a child's errors occur only in their weaker or second language, and those errors are predictable based on the phonology of their first language, what you are observing is transfer — not a disorder.
Transfer errors resolve as language exposure and input become more balanced. Disorder errors persist regardless of exposure and appear across both language systems.
This distinction matters enormously. A monolingual evaluation of a bilingual child — conducted in the child's weaker language only — will almost certainly over-diagnose speech sound disorders. ASHA (2023) explicitly requires evaluation in both languages for bilingual children, using normative data appropriate to each language.
Common Transfer Patterns — Not Disorders
Here are the most common cross-linguistic phonological transfer patterns that multilingual families encounter. These are predicted by the source language's phonology, and they are all normal features of language development in bilingual contexts:
| Language Pair | Error Pattern in L2 | Why It Happens (L1 Transfer) | Status |
|---|---|---|---|
| German → English | /w/ pronounced as /v/ ("vine" for "wine") | German has /v/ but no /w/. The closest German phoneme maps onto English /w/. | Transfer |
| German → English | /th/ → /d/ or /z/ ("dis/zis" for "this") | German has no dental fricatives /θ/ or /ð/. /d/ or /z/ is the closest available German phoneme. | Transfer |
| German → English | English /r/ = German uvular [ʁ] | Child applies their well-established German uvular R to English. The two are not the same motor gesture. | Transfer |
| Mandarin → English | Final consonant deletion ("ca" for "cat") | Mandarin is predominantly CV (consonant-vowel) syllable structured; final consonants are rare. Mandarin phonology predicts this error. | Transfer |
| Mandarin → English | /θ/ → /s/ ("sink" for "think") | Mandarin lacks /θ/; /s/ is the perceptually closest available phoneme. | Transfer |
| Spanish → English | /v/ → /b/ ("berry" for "very") | Spanish does not have a phonemic /v/ vs. /b/ distinction — both allophones exist but are not contrastive. | Transfer |
| Spanish → English | No aspiration on voiceless stops ("p, t, k") | Spanish voiceless stops are unaspirated. English aspirates them in initial position. | Transfer |
| Turkish → German | ö, ü errors | Turkish lacks front rounded vowels. These are genuinely difficult sounds to acquire for Turkish speakers. | Transfer |
| Any L1 → Any L2 | Error appears in BOTH languages; not predicted by L1 | Not explainable by L1 phonology; persists regardless of exposure | Possible disorder — evaluate |
ASHA's Official Position on Dialect
It's worth noting that the same principle extends to dialect. ASHA's (2023) official policy states that "no dialectal variety of English is a disorder." African American Vernacular English (AAVE), for instance, has its own systematic phonological rules — final consonant cluster reduction, specific vowel patterns — that are linguistically rule-governed and legitimate. A monolingual evaluator unfamiliar with AAVE phonology who evaluates an AAVE-speaking child may over-diagnose errors that are, in fact, correct AAVE productions.
The principle is the same as for bilingualism: know the input language(s) before you judge the output.
When Should You Actually Be Concerned?
Most multilingual families do not need to worry about their child's cross-language sound differences. However, there are genuine red flags that warrant evaluation. Seek assessment from a bilingual SLP if:
🚨 Errors appear in BOTH languages — especially in the child's dominant/stronger language
🚨 Errors are NOT predicted by L1 phonology — the child substitutes sounds that make no cross-linguistic sense
🚨 The child is unintelligible to familiar listeners, even in their dominant language
🚨 Developmental milestones are missed in the dominant language — sounds that should be acquired by a certain age are absent
🚨 The child avoids speaking or shows frustration when not understood
🚨 Language delay appears alongside speech errors — vocabulary and grammar also affected in both languages
The Right Way to Get an Evaluation
If you do decide to seek an evaluation, the specific type of assessment matters. A standard monolingual speech screening will not give you an accurate picture of a bilingual child. Here's what to ask for:
- Request a bilingual SLP — or an SLP who is trained in bilingual assessment. ASHA's Practice Portal lists bilingual service delivery guidelines and can help you find qualified practitioners.
- Insist on evaluation in both languages — not just the school language or the dominant language. Both must be assessed.
- Ask specifically: "Are the errors in Language A predicted by Language B phonology?" If the answer is yes, you are looking at transfer, not disorder.
- Use language-appropriate norms — English normative data cannot be applied to judge a child's French or German phonology. Ask which normative databases the evaluator is using.
How Long Does Transfer Last?
Transfer errors typically diminish as a child's exposure to and use of the second language increases. For children in full-immersion school settings (e.g., a German child in an English-medium school), most phonological transfer features resolve within 12–24 months of immersion, provided the child has adequate comprehensible input and opportunities for interaction.
Some transfer features are more persistent than others. The /w/-/v/ distinction for German-English bilinguals, for example, may persist for years even in otherwise highly fluent children — because it is simply absent from German's phoneme inventory and requires a new motor category to be built from scratch. Patience, not concern, is the appropriate response.
A reassuring framework for multilingual parents:
Think of your child's speech as a sophisticated system managing multiple phonological grammars simultaneously. When those grammars interact and create unexpected outputs, that is not a failure of the system — it is evidence that the system is working hard. Bilingual children's speech development timelines are broader than monolingual norms, and that breadth is entirely appropriate given the complexity of what they are doing.
Bilingualism is a cognitive advantage. The speech quirks that come with it are a small and temporary price.
How Grimasso Supports Multilingual Practice
Grimasso is designed for multilingual families from the ground up — with dedicated language-specific exercise sets in English, German, French, and Chinese. Rather than treating one language as "normal" and others as deviations, Grimasso recognizes that each language has its own articulatory demands and provides exercises calibrated to those specific requirements.
For German-English families, this means tongue exercises that build the lateral bracing skills relevant to both German precision and English /r/ acquisition. For French families, it means velum awareness work relevant to nasal vowels. The goal is to build the foundational orofacial muscle skills that support all languages — not to push any single language's norms.
References
- ASHA (2023). Bilingual Service Delivery. American Speech-Language-Hearing Association Practice Portal. Retrieved from asha.org.
- Paradis, J., Genesee, F., & Crago, M. B. (2010). Dual Language Development and Disorders (2nd ed.). Brookes Publishing.
- Schulz, P., & Tracy, R. (2011). LiSe-DaZ: Linguistische Sprachstandserhebung — Deutsch als Zweitsprache. Hogrefe.
- Kohnert, K. (2010). Bilingual children with primary language impairment: issues, evidence and implications for clinical actions. Journal of Communication Disorders, 43(6), 456–473.
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