The more relevant types can be summed up by this example from Mark Irwin. Please carefully pay attention to the repetitions/social impact. 3 men chat in a bar. Tom's stutter is more obvious. TOM: I ssstutter. When I go out it ttttakes me lllonger to order a bbbeer. DICK: I ssstutter. I order a scotch because I can't say bbeer. HARRY: I ssstutter. I'm extremely embarrassed and frustrated by it. I rarely go out. I avoid relationships. https://www.mnsu.edu/comdis/isad11/papers/irwin11.html