Explain ethical considerations when using a control group in an investigation of how aerobic training affects recovery heart rate. (4 marks)
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Sample Answer
- The control group should not be disadvantaged by participation, which means they should receive an alternative appropriate activity rather than simply sitting idle.
- All participants (both experimental and control groups) must receive full information about the group they are in and what their participation involves before giving consent.
- If the aerobic training shows clear benefits during the investigation, there may be an ethical obligation to offer the control group similar training opportunities after the investigation concludes.
- Random assignment to groups rather than selective placement ensures fairness and scientific validity while reducing potential bias.
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Sample Answer
- The control group should not be disadvantaged by participation, which means they should receive an alternative appropriate activity rather than simply sitting idle.
- All participants (both experimental and control groups) must receive full information about the group they are in and what their participation involves before giving consent.
- If the aerobic training shows clear benefits during the investigation, there may be an ethical obligation to offer the control group similar training opportunities after the investigation concludes.
- Random assignment to groups rather than selective placement ensures fairness and scientific validity while reducing potential bias.