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Benito carried out some research into the effects of anger management treatment with offenders - AQA - A-Level Psychology - Question 7 - 2017 - Paper 2
Question 7
Benito carried out some research into the effects of anger management treatment with offenders. He recorded the number of aggressive acts offenders displayed. The of... show full transcript
Worked Solution & Example Answer:Benito carried out some research into the effects of anger management treatment with offenders - AQA - A-Level Psychology - Question 7 - 2017 - Paper 2
Step 1
State which statistical test Benito would use to analyse his data.
Answer
Benito would likely use an independent samples t-test to compare the mean aggressive acts between the two groups (those who received anger management treatment and those who did not). This test is appropriate as it compares the means of two independent groups.
Step 2
State three reasons why Benito would use the statistical test you identified in (i).
Answer
- The independent samples t-test is suitable for comparing means from two different groups, which aligns with Benito's study comparing offenders with and without treatment.
- This test accounts for the variability within each group, providing a more accurate understanding of the differences in aggressive acts.
- The t-test allows for the determination of statistical significance, helping Benito assess whether the treatment had a meaningful impact.
Step 3
Describe how he would have selected his sample.
Answer
Benito would have defined his population of interest, which consists of offenders. From this population, he would select a random sample by using methods such as simple random sampling. This may involve using a random number generator to select offenders from a list, ensuring that every individual has an equal chance of being included in the sample. Additionally, Benito might ensure a diverse representation of offenders in terms of age, background, and severity of offenses to increase the study's generalizability.