Good question!! Depending on the severity of your speech problem you may or may not have a relapse effect. Often times the relapse effect is really the placebo effect - if you think something will help you, then it usually will for awhile. Eventually reality sets in an the placebo effect wears off. Singing , whispering and choral speech usually have no relapse.-placebo effect. Stuttering prosthetics and changing from our normal voice do have a relapse effect in a minority of cases for those of us who stutter.