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Scientific processes

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Question 142

Research Study Description

A researcher investigated the effectiveness of different interventions on improving sleep quality among emergency call handlers working rotating night shifts. Initially, 150 call handlers completed a standardized sleep quality questionnaire ranging from 0 (excellent sleep quality) to 21 (severe sleep issues).

90 call handlers who scored between 12 and 15 (indicating moderate-to-severe sleep disruption) were selected to participate in a 6-week study. They were randomly allocated to one of three conditions:

  • Condition A (Group CBT-I): Attending six weekly 90-minute face-to-face group therapy sessions for Cognitive Behavioral Therapy for Insomnia (CBT-I) led by a clinical sleep specialist.
  • Condition B (Sleep Hygiene & Blue-Light Blocking): Wearing specialized blue-light filtering glasses for 2 hours before sleep and adhering to a strict 15-minute screen-free bedtime routine daily for 6 weeks.
  • Condition C (Waiting List Control): Placed on a 6-week waiting list, receiving no active sleep interventions during this period.

After the 6-week period, all participants completed the sleep quality questionnaire again so the researcher could analyze the changes in sleep disruption severity.

The researcher asked the 90 emergency call handlers for fully informed consent to participate in this study. Outline what the researcher should have told the participants so that they were able to give genuinely informed consent.

[5]
Markscheme

Scientific processes Questions

  1. A Level
  2. /Psychology
  3. /Scientific processes

689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.

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