**Second reply:** This is my attempt to shed some light on the definition: "justification" and "need to reduce factors". I think that negative experiences can increase our defensive mechanism to say thoughts out loud (that results in stuttering, for example, if we develop a stutter identity, immerse ourselves in a stutter state or mindset, or start believing in stuttering anticipation caused by negative experiences). I think that there is a 'component' in this defensive mechanism that we have at least somewhat control over during stuttering, which is * (1) justifying factors (like, triggers, perceived speech errors in the speech plan, etc) (that 'justify' allowing or preventing the execution of speech motor plans), and * (2) choosing to implement 'the need to reduce' such factors (for example, by encountering many negative experiences we "learn" to believe that anticipation (or other triggers) are a threat in the speech plan which increases our defensive mechanism that decides to allow/prevent the execution of sounds/speech plans So, in conclusion, I argue that these two components in the threshold mechanism - can be a form of proactive or reactive inhibitory control.