Multiple-baseline design refers to a type of single-subject design that begins with two (2) simultaneous Baseline phases, then initiates a treatment for one baseline, and at a later t ime, initiates the treatment for the second baseline; a design in which a treatment is instituted at successive points in time for two (2) or more persons, settings, or behaviors; and a design in which different behaviors or different people receive baseline periods of varying lengths prior to the introduction of the independent variable