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Describe the baseline phase (Phase A) in a single-subject reversal design. Specifically, recall its order in the design, what condition it represents, and the criterion used to determine when to transition out of this phase.
Question: Describe the baseline phase (Phase A) in a single-subject reversal design. Specifically, recall its order in the design, what condition it represents, and the criterion used to determine when to transition out of this phase.
Sample answer: In a single-subject reversal design, the baseline phase (Phase A) is the initial step. It acts as a control condition that represents the natural level of responding of the dependent variable before any intervention is applied. This phase must continue until a steady state of behavior is achieved.
Key points:
- Phase A is the initial step in a single-subject reversal design.
- The baseline phase acts as a control condition.
- It represents the natural level of responding before any intervention is applied.
- The phase continues until a steady state of behavior is achieved.
Rubric: To receive full credit, the student must recall that: 1) Phase A is the initial step, 2) it acts as a control condition representing natural responding before intervention, and 3) it continues until a steady state of behavior is achieved.
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Research Methods in Psychology - 4th American Edition @ KPU
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