Use cognitive models to explain behaviour

Psychology SL stimulus: In Sydney, Year 10 students are involved in a well-being survey with phone-use screenshots and mood diaries. The focus is short-video use before sleep and next-day mood. Evidence says students with longer late-night scrolling report lower morning mood. The method uses screen-time screenshots, diary entries, and a mood rating scale with 104 participants over 6 weeks. The cognitive link is that attention capture and reward expectation may sustain scrolling. Use the cognitive model path before explaining the behaviour. Select the psychology concept, content link, context application, and evaluation limit. Then answer this in your own words: how would this route improve the Psychology SL response for this exact context? AI will analyse your reasoning, evidence use, concept-content-context link, method or ethics judgement, and expression.