Manage sampling, consent, and participant protection

Psychology SL stimulus: In Melbourne, a learning and cognition class practical involves museum visitors aged 15 to 17 in an informal learning space with two versions of exhibit labels. The target behaviour is visitors recall more local-history detail after personal-choice questions. The proposed method is true experiment with 13 participants, using random label condition, exit recall task, and brief engagement rating. The evidence issue is randomised labels support comparison but the field setting is less controlled. The class wants stronger sampling and consent arrangements. Use the sampling and consent check before choosing the responsible decision. Select the task focus, method decision, context evidence, and judgement boundary. Then answer this in your own words: what should the student do next to make this Psychology SL response or proposal stronger for this exact context? AI will analyse your reasoning, evidence use, concept-content-context link, method or ethics judgement, and expression.