Multiple baseline
Staggered implementation of the intervention in a step-wise fashion across subjects, settings or behaviors
Alternating treatments (simultaneous treatments, multielement, multiple schedule)
Rapid alternation between two or more treatments
Reversal (withdrawal)
Alternation between baseline and a particular intervention
With an alternating treatments design, multiple treatment interference is addressed by
Making the conditions highly discriminable
Simultaneous treatments (concurrent schedules)
Two or more concurrently operating contingencies; in effect subject chooses the intervention