Identify and describe the purposes of the four components of a small-N research design.
What will be an ideal response?
Ans: Varies.
Small-N designs typically require (1) repeated measurement of the dependent variable, (2) a baseline phase, (3) a treatment phase, and (4) a graphic display of the results. Repeated measurement at regular time intervals is the manner in which data are collected. This begins in the baseline phase, which helps set up a comparison point for scores on the dependent variable after the treatment. Data collected during the baseline phase serve as a control condition. The treatment phase involves the implementation of the treatment of interest and repeated measurement of the dependent variable should also take place during this phase. Finally, researchers need to be able to examine the outcome of the treatment relative to the baseline phase. Graphing allows for an evaluation of the impact of the intervention.
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