A couple of things here: 1. The neurological mechanisms underlying stuttering are not well known to doctors, and even some speech therapists. So there's no surprise that that's what they mentioned to you. I hope for a future where doctors, especially, are educated in the underlying neurobiology of stutter. The information is there already, it's the education that's lacking. 2. There is no evidence to suggest that stuttering is related to a "subconscious fear of getting scolded". 3. I'd like to mention that anxiousness or fear and stuttering can be related, but you can stutter without being anxious or without being fearful too. There are other, more important, underlying mechanisms involved.