The 47-Month-Old With 20 Words: Bilingual Difference or Delay?
Marcus is 47 months old and has attended your inclusive preschool room for six weeks. Your dated anecdotal notes show he uses mostly single words plus a few two-word combinations (“more juice,” “daddy go”), leads with gestures, and rarely initiates with peers. His mother reports about 20 words total at home across Spanish and English, and says he did not walk until 16 months. He has had three diagnosed ear infections since January; his hearing screening at the health department has been postponed twice. He cannot copy a circle, and outdoors he straddles the tricycle and pushes with his feet rather than pedaling. He follows one-step directions given with a gesture and needs repetition for two steps. His parents call him “a late talker, like his uncle” and ask you not to “make a big deal of it.” Your program's screening window closes in three weeks, and the referral timeline for concerns raised at intake is 30 days.
1. Is this pattern best explained by a bilingual language difference, a developmental delay, or both? Reason from the evidence and name what must be ruled out before anyone labels him.
Read the worked answer
Bilingualism alone does not explain this. Children learning two languages hit the same milestones on roughly the same timetable as monolingual peers; what counts is total vocabulary across both languages combined. A 47-month-old with about 20 words across Spanish and English sits far below the ~50-word, two-word-combination stage expected around 24 months. And his Spanish is not stronger than his English, so the “he's just processing two languages” account predicts a pattern that is not present.
Cross-domain signs matter more than any single score. Late walking (16 months), no circle copy at 47 months, and two-step directions that require repetition implicate motor and receptive language as well as expressive vocabulary. The more domains involved, the weaker a single-cause explanation becomes.
Rule-outs come before conclusions. Three ear infections since January plus a twice-postponed screening means conductive hearing loss is an open question. Audiology runs in parallel with a speech-language referral, not after it. A family history of late talking is a risk factor, not reassurance - and a parent's “he'll grow out of it” is a wish, not data.
What the evidence cannot yet tell you: how he performs in his home language with a fluent speaker, and whether a social-communication or joint-attention concern exists. Both need direct observation before you name a category.
2. Map your next 30 days. What do you do, in what order, and how do you work with parents who have asked you to wait?
Read the worked answer
Order matters because some steps gate others.
- Days 1–3: Request an expedited audiology appointment and document the request. You cannot interpret a language score on a child who may not be hearing clearly.
- Days 1–7: Complete the program's screening tool, in both languages if available, and send home a family vocabulary checklist in Spanish. Screening is something you do; it does not require consent for outside evaluation.
- Ongoing, 3–5 entries per week: Dated anecdotal notes with context, exact words, and what preceded and followed. Vague notes (“limited speech”) will not carry a referral meeting.
- Days 7–14: Meet the family, but bring evidence rather than labels - “here is what we saw Tuesday and Thursday” - and ask what they see at home. Explicitly separate screening from diagnosis: “This is how we rule things out, not a verdict.”
- Days 14–30: Offer to write down their questions and to attend the referral meeting with them. If they decline outside evaluation, document the conversation, keep providing rich language supports (narration, expansions, small-group shared reading, gesture and visual supports), and re-offer at each checkpoint.
Do not let the request to wait stop the screening clock. Consent is required for outside evaluation, not for your own observation, screening, and documentation. Silence from the family is not consent, and it is not a reason to stop recording.