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Multiple-Treatment Reversal Design
A multiple-treatment reversal design expands upon the basic reversal structure to evaluate the effectiveness of more than one intervention. In this approach, an initial baseline phase is followed by separate phases for distinct treatments, often returning to a baseline between treatments to control for carryover effects. For example, a researcher evaluating a disruptive student might establish a baseline of studying behavior (A), introduce positive teacher attention (B), and then switch to mild punishment for not studying (C), potentially creating an ABCACB sequence.
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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(ABA), if a researcher observes that the target behavior does not return to baseline levels after the treatment is withdrawn, they can still definitively conclude that the treatment was the primary cause of the initial change.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.
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What is the defining characteristic of a multiple-treatment reversal design?
In a study using a multiple-treatment reversal design, a researcher evaluates two different strategies to reduce a student's disruptive behavior. Match each component of the study's design with its primary role or purpose.
A researcher is studying how 'Fidget Spinners' (B) and 'Squeeze Balls' (C) affect the focus of students with ADHD, compared to a 'No Tool' baseline (A). Arrange the phases below in the correct chronological order to form a multiple-treatment reversal design that returns to baseline between each intervention.
In a multiple-treatment reversal design using an ABCACB sequence, if the participant's behavior during the second 'A' phase does not return to the levels observed in the initial baseline, the researcher can still validly analyze the independent effectiveness of treatment 'C'.
True or False: In a multiple-treatment reversal design, it is common to return to a baseline phase () between the introduction of different treatment phases (such as and ).
In a multiple-treatment reversal design using an sequence, what is the primary scientific purpose of the baseline phase () that occurs between treatment and treatment ?
A researcher using an design observes that behavior in the middle 'A' phase does not return to baseline levels. To properly evaluate the study's internal validity, the researcher must conclude that the comparison between treatments is likely confounded by _____ effects.
A researcher is applying a multiple-treatment reversal design to evaluate how positive teacher attention and mild punishment affect a student's studying behavior. Match each phase of the study to its corresponding description.
In a multiple-treatment reversal design, returning to a baseline phase between distinct treatment phases allows the researcher to control for _____ effects, which could otherwise confound the results.
A researcher is planning a multiple-treatment reversal study using an ABCACB design to evaluate the effects of positive teacher attention (B) and mild punishment (C) on studying behavior compared to baseline (A). Order the phases of this study chronologically from start to finish.
Describe the basic structure of a multiple-treatment reversal design and explicitly state the primary reason a researcher would return to a baseline phase between different treatment phases.
Based on this scenario, explain how the school psychologist has implemented a multiple-treatment reversal design. In your explanation, identify what each part of the sequence represents using standard design notation (e.g., , , ).
A researcher wants to compare the effectiveness of two clinical therapies, Therapy and Therapy , on reducing depressive symptoms. They plan to use a multiple-treatment reversal design to evaluate both therapies while strictly controlling for carryover effects. Propose a specific, standard phase sequence using letters (e.g., , , ) that the researcher could use, and briefly define what each letter represents in your sequence.