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In group designs - serves as both the...

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In group designs, different groups of subjects serve in the treatment and  control conditions. Clearly, the two groups must be as similar as possible  and must be treated as much the same as possible, with the exception of  the independent variable. In this way, everything but the independent  variable cancels out as a potential cause for the difference in the  dependent measures.  Single subject designs are used because they provide the most powerful  technology to detect treatment effects and provide the greatest generality  to other situations. If every single animal exhibits the same functional  relationships, then it is very likely that a target animal will also exhibit  the same relationship. In single subject designs, the same individual 
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Unformatted text preview: serves as both the treatment "group" and the control "group." How the individual behaves under the treatment is compared to how that same individual behaved both before and after the treatment. The “before” and “after” conditions and their resulting behaviors are used to cancel out the effects of the unwanted confounds as potential causes of the resulting behaviors during the treatment condition. Only the difference in the conditions are the likely causes for the difference in the behavior. Given that you have removed confounds as a cause for your obtained results, you now must determine if the results were simply the result of chance or were the result of a true treatment effect....
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