Did you just make up that definition? That certainly wasn't the DSMIV definition. it's the DSM-V that we use now not the DSM-IV. In addition, they changed the term from developmental stuttering to "childhood onset fluency disorder" Here's the actual definition on the DSM-V: "Disturbances in the normal fluency and time patterning of speech that are inappropriate for the individual''s age and language skills." [https://www.ncbi.nlm.nih.gov/medgen/754254](https://www.ncbi.nlm.nih.gov/medgen/754254) You're idea of stuttering is that it relates to habits. There is no evidence suggesting that stuttering is related to habits. You're ignoring a whole mountain of evidence because doing so fits with your current conclusions on stuttering. I invite you to read my latest post on "psychological aspects of stuttering" If you do actually stutter, there may be something of interest in there for you.