Abstract
In experimental designs requiring the administration of more than one treatment to the same subject(s), the effect of one treatment may be influenced by the effect of another treatment (Campbell & Stanley, 1963), a phenomenon known as multiple treatment interference. We conducted two studies in which multiple treatment interference in an alternating treatments design was shown to be a function of the length of the intercomponent interval (ICI) separating treatment conditions. In the first study, we evaluated the effects of four different treatments on the mouthing of a severely retarded boy. Under a 1-min ICI no consistent differential responding to treatment was obtained. Differential responding emerged when the ICI was increased from 1 min to 120 min, thus suggesting multiple treatment interference in the lack of differential responding under a 1-min changeover interval. Functional control of the nondifferential and differential responding as a function of the ICI length was replicated in a reversal phase. In the second study, we compared two treatment procedures for the disruptive noncompliant behavior of a moderately retarded boy. Multiple treatment interference (i.e., the lack of differential responding) occurred with the 1-min intercomponent interval. An increase to a 120-min ICI again resulted in differential responding. A replication of multiple treatment interference by a reversal to a short interval phase was not achieved in the second subject. Results of this study support much of the basic literature on discrimination and multiple treatment interference.(ABSTRACT TRUNCATED AT 250 WORDS)
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- Barlow D. H., Hayes S. C. Alternating treatments design: one strategy for comparing the effects of two treatments in a single subject. J Appl Behav Anal. 1979 Summer;12(2):199–210. doi: 10.1901/jaba.1979.12-199. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Barrett R. P., Matson J. L., Shapiro E. S., Ollendick T. H. A comparison of punishment and DRO procedures for treating stereotypic behavior of mentally retarded children. Appl Res Ment Retard. 1981;2(3):247–256. doi: 10.1016/0270-3092(81)90018-7. [DOI] [PubMed] [Google Scholar]
- Blough P. M. Local contrast in multiple schedules: the effect of stimulus discriminability. J Exp Anal Behav. 1983 May;39(3):427–435. doi: 10.1901/jeab.1983.39-427. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hinson J. M., Malone J. C., Jr Local contrast and maintained generalization. J Exp Anal Behav. 1980 Nov;34(3):263–272. doi: 10.1901/jeab.1980.34-263. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Johnson M. S., Bailey J. S. The modification of leisure behavior in a half-way house for retarded women. J Appl Behav Anal. 1977 Summer;10(2):273–282. doi: 10.1901/jaba.1977.10-273. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McLean A. P., White K. G. Undermatching and contrast within components of multiple schedules. J Exp Anal Behav. 1981 May;35(3):283–291. doi: 10.1901/jeab.1981.35-283. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Watson J., Singh N. N., Winton A. S. Suppressive effects of visual and facial screening on self-injurious finger-sucking. Am J Ment Defic. 1986 Mar;90(5):526–534. [PubMed] [Google Scholar]