Great response! That makes a lot of sense what you say about differences in societal/environmental pressure. I think this is reflected in the following quote: "*Most young children who stutter, recover from stuttering due to epigenetics. For most children, stuttering will resolve itself early during development spontaneously through maturation of the speech motor system and with assistance from environmental influences. The emergence of stuttering and the path to persistence or recovery depends critically upon the timing and intensity of gene expression over development—that is, upon epigenesis*"