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Brie carried out an experiment to see the effect of a new drug for treating heroin addiction - AQA - A-Level Psychology - Question 16 - 2020 - Paper 2

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Brie carried out an experiment to see the effect of a new drug for treating heroin addiction. The new drug was developed to reduce the impact of withdrawal symptoms.... show full transcript

Worked Solution & Example Answer:Brie carried out an experiment to see the effect of a new drug for treating heroin addiction - AQA - A-Level Psychology - Question 16 - 2020 - Paper 2

Step 1

Identify the sampling technique used by Brie in her experiment.

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Answer

Brie used an opportunity sample as she selected heroin addicts who were available at the rehabilitation centre on that Monday.

Step 2

Draw a suitable graph to represent the results shown in Table 4.

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Answer

A bar chart should be drawn to show the mean score (out of 7) for the intensity of withdrawal symptoms.

  • Title: Mean Score of Withdrawal Symptoms
  • X-axis label: Conditions
  • Y-axis label: Mean score (out of 7)

Plot Condition A with a bar height of 5 and Condition B with a bar height of 3.

Step 3

Compare independent groups and matched pairs experimental/research designs used in health psychology.

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Answer

Both independent groups and matched pairs designs involve different participants in each condition of a study.

  • Similarity: Both designs aim to minimize participant variability.
  • Difference: Independent groups have entirely different participants in each condition, whereas matched pairs use participants with similar characteristics across conditions, ensuring more comparability.

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