Learn Before
Treatment Phase
Following the establishment of a baseline in a single-subject design, the treatment phase (Phase B) is initiated by introducing the experimental intervention. The dependent variable may fluctuate initially as the participant adjusts, so the researcher waits until responding reaches a new steady state to accurately assess the treatment's impact.
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Research Methods in Psychology - 4th American Edition @ KPU
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Baseline Phase
Treatment Phase
Internal Validity of Reversal Designs
Multiple-Treatment Reversal Design
Alternating Treatments Design
ABAB Design
Internal Validity in Reversal Designs
ABAB Reversal Design Example
Limitations of Reversal Design
Arrange the phases of a fundamental reversal design (ABA design) in the correct chronological order.
In a research study using a reversal design (ABA), what is the primary scientific purpose of withdrawing the treatment and returning to the baseline condition in the final phase?
A researcher is investigating the effectiveness of a 'gold star' reward system on a student's on-task behavior using a reversal design. Match each specific step of the study to its corresponding phase label in the ABA model.
In a single-subject reversal design (ABA), if a researcher observes that the target behavior does not return to baseline levels after the treatment is withdrawn, they can still definitively conclude that the treatment was the primary cause of the initial change.
When evaluating the appropriateness of a reversal (ABA) design for a specific study, a researcher must ensure that the target behavior is ______; if the behavior will not return to baseline levels once the treatment is removed, the design cannot effectively demonstrate experimental control.
Which of the following alternative names is commonly used to refer to the reversal design, the most fundamental single-subject research design?
In a single-subject reversal (ABA) design, the 'reversal' in the final phase is achieved by introducing an opposite treatment to actively force the behavior back to its baseline state.
A clinical psychologist is evaluating a new deep-breathing exercise to reduce a patient's daily anxiety attacks. Match each proposed action in the study to its corresponding phase within a standard ABA reversal design.
In a research study utilizing a single-subject ABA design, the researcher withdraws the treatment in the third phase specifically to return the participant to the _____, thereby analyzing whether the treatment was the actual cause of any behavioral change.
An educational researcher is evaluating the causal impact of a peer-tutoring program on a student's spelling accuracy using a reversal design. Arrange the steps of the study in the correct chronological order to assess the treatment's effectiveness.
Learn After
In a single-subject design, researchers typically evaluate the final impact of an experimental intervention immediately upon entering the treatment phase, regardless of initial fluctuations in the dependent variable.
In a single-subject research study, a researcher introduces a new behavioral intervention to a participant and notices that the participant's behavior initially fluctuates wildly. What is the most appropriate next step for the researcher to take during this phase?
A clinical psychologist is investigating whether a new 'relaxation breathing' technique reduces a patient's physical symptoms of anxiety. After establishing a stable baseline, the psychologist begins the treatment phase. Arrange the following steps in the correct chronological order to accurately assess the technique's impact.
In a single-subject research study, analyzing the data collected during the treatment phase requires distinguishing between temporary reactions and stable outcomes. Match each specific observation or researcher action with its corresponding analytical conclusion.
When evaluating the success of an intervention during the treatment phase of a single-subject design, a researcher must wait for the dependent variable to reach a(n) ______ to ensure the observed changes are stable and not merely temporary fluctuations.
A clinical psychologist is designing a study to test if a new 'weighted blanket' therapy reduces anxiety-related movements in a patient during sleep. To properly structure the 'treatment phase' (Phase B) within this single-subject design, which protocol should be synthesized to ensure the most accurate measurement of the blanket's effect?
In a single-subject research design, the treatment phase is commonly labeled Phase _____.