Question
Difficulty: medium. Skill: apply. Type: experimental design critique.
The team wants stronger evidence before scaling a plan for completing a multi-step job routine. Which design decision best fits single-case versus group-design strengths? The case file includes 3 recent sessions, 5 implementers, and 1 setting.
AUse a familiar protocol even though it does not address internal validity and confounds
BIdentify the competing explanation and strengthen experimental control before claiming an intervention effect in relation to adult client's stopping work after corrective feedbackCorrect answer
CRely on job coach's report alone and stop collecting direct evidence
DChange the intervention immediately based on the concern alone
Explanation
Answer BThe clue is the combination of duration data showing long pauses after feedback, stopping work after corrective feedback, and the required task: Single-case versus group-design strengths. The case file includes 3 recent sessions, 5 implementers, and 1 setting. Identify the competing explanation and strengthen experimental control before claiming an intervention effect in relation to adult client's stopping work after corrective feedback is best because it answers that clue through internal validity and confounds instead of treating the scenario as a generic behavior problem. On exam items like this, name the decision point first, then eliminate options that rely on one report, a label, a familiar protocol, or an action that skips the relevant data check.
Why this question is hard
ClueKey scenario clueThe clue is the combination of duration data showing long pauses after feedback, stopping work after corrective feedback, and the required task: Single-case versus group-design strengths. The case file includes 3 recent sessions, 5 implementers, and 1 setting.
TrapCommon trapA familiar protocol is not enough unless it matches the assessed variables and the current decision question.
NextIf you missed it, review Internal validity and confoundsThen answer a few related scenarios before moving back to broad practice.
Why the other choices are weaker
AChoice AA familiar protocol is not enough unless it matches the assessed variables and the current decision question.
CChoice CStakeholder input matters, but direct data, context, and integrity checks are still needed for a defensible answer.
DChoice DThis is weaker because it skips the assessment, integrity, or decision rule needed before changing procedures.
Study tags
Internal validity and confoundsSingle-case versus group-design strengthsconfounding variablesexperimental control
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