So, going by your logic, every single person who has an anxiety disorder, or poor self esteem, or other “psychological” issues stutter, right?! OK, believe what you want to believe. I still stand by the facts that at its roots, it’s a neurological issue in the brain. The byproduct of this neurological issue manifests as stuttering which results in our anxiety, heightened adrenaline and muscle tensions when speaking and socialising with others.