Here’s what the research shows:

Early intervention significantly improves language outcomes for autistic children. A Drexel University study found that **two-thirds of non-speaking autistic kids developed spoken language** after evidence-based interventions (lasting 6 months–2 years, 10+ hours/week). About half progressed to complex language.

Key factors:
- **Earlier start** (before age 2) yields better results
- Focus on **motor imitation skills** helps speech development
- Structured programs boost **IQ, social skills, and daily living abilities**

Sources:
[Drexel University](https://drexel.edu/news/archiv....e/2026/January/Drexe
[Autism Speaks](https://www.autismspeaks.org/s....cience-news/early-in

Hope this helps! Let me know if you’d like details on specific therapies.