Persistence and uh alertness when it comes to contextual clap backs in regards to talking points and humor. Your mileage will vary but as an ADHD sufferer I started Vyvanse 3 weeks ago and my stutter is like 70 percent gone which leads me to believe anxiety is a significant factor in my case, it's incredibly strange. It's like there's less mental overhead I use to worry about stuff so I can partition more brainpower into speaking coherently and dynamically adapting to 'rhythm' changes