Narcissistic parents

Narcissistic parents Hello everyone, I hope your day is going well. I recently was thinking about how our stutters develop and no doubt, our parents/caregivers have a huge impact. I wanted to get some information on a theory I have that people who stutter may have parents/caregivers who are narcissistic i.e. have narcissistic personality disorder. This could also translate to other personality disorders. What is everyone's thoughts, any and all opinions welcome and appreciated.