 Neither acute nor chronic stress, however, itself creates any predisposition to stuttering.The disorder is also "variable", which means that in certain situations, such as talking on the telephone or in a large group, the stuttering might be more severe or less, depending on whether or not the stutterer is self-conscious about their stuttering.Stutterers often find that their stuttering fluctuates and that they have "good" days, "bad" days and "stutter-free" days.