**What are your thoughts on this new stutter research?** "There is a rich literature demonstrating that adults who stutter (AWS) demonstrate atypical functional brain activity during speech production. However, from these studies we do not know if the differences observed are a cause or a consequence of stuttering and we don’t know if the differences are related to the planning of speech or the execution of speech. This literature is underrepresented despite the fact that stuttering is a developmental disorder that typically emerges between the ages of two and five years and differences observed between adults who stutter (AWS) and adults who don't stutter (AWNS) most likely do not reflect the cause of stuttering, but rather neoplastic adaptations to the experience of stuttering. AWS demonstrate atypical brain activity during both the planning and execution of speech-motor events, notably evidenced by increased right hemisphere activity of regions of the brain associated with speech-motor control. It remains unclear whether these broad group differences in cortical activity reflect a cause or a consequence of stuttering. It is not possible to distinguish primary affects of stuttering from neural reorganization as a result of experience with stuttering."