Edexcel A-Level Psychology A2 6.3.3 Decision Making and Data Interpretation Topic Practice

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Question 1

[Maximum number: 1]

Researchers assigned 40 offenders randomly to either a treatment group or a control group to test the effects of therapy on reoffending.

- Group A: Cognitive behavioural therapy (CBT).
- Group B: Control group.

The offenders were contacted one year after the research was completed in order to establish the rate of reoffending. The results are shown in Table 2.

Table 2

Table 2

Calculate the number of offenders who reoffended, using the information in Table 2. (1)

Space for calculations

Number of offenders who reoffended

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