Research suggests an intervention duration of how many hours for a clinically significant functional outcome in everyday communication?

• A. 10 hours
• B. 20 hours
• C. 6 hours
• D. 48 hours

Answer: (B)

The main concept is treatment dose: how many hours of intervention are needed to produce meaningful, real-world gains in everyday communication. Research across language and communication disorders shows that about twenty hours of targeted therapy often yields clinically significant improvements that people can notice in daily conversations, not just in clinic tasks. This amount provides enough sustained, repeated practice for new strategies to become automatic and transferable to real-life contexts. Shorter amounts, such as six or ten hours, tend to improve specific tasks but may not lead to broad, everyday communication changes. While a larger commitment, like forty-eight hours, can lead to further gains—especially for more severe cases—the twenty-hour benchmark is a commonly cited, practical target for achieving meaningful functional outcomes. Of course, the exact dose depends on factors like diagnosis, severity, and therapy quality, but twenty hours offers a solid, evidence-based guide for planning effective intervention.