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Criminological Psychology

Analysing data and evaluating practical research

  • 3 things to know
  • Papers 2 and 3

Overview

Recall questions on when chi-squared, Spearman's rho, Mann-Whitney U and Wilcoxon suit criminological data, interpreting results against the aims, judging a practical's validity, reliability and objectivity, its weaknesses and improvements, and suitable practical exercises.

What you need to know

Answer each one before you reveal it.

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Evaluation

What types of procedural flaws might weaken the quality or generalisability of research findings?

Key term

What does data analysis in practical research fundamentally involve?

Key term

When discussing results from a practical investigation, what must findings be interpreted in relation to?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Name four statistical tests that may be used to analyse data in criminological psychology research.

    Model answer

    Chi-squared, Spearman's rho, Mann-Whitney U, and Wilcoxon.

  2. 2

    When would Spearman's rho be an appropriate test to use in criminological research?

    Model answer

    When testing for a correlation between two variables measured on at least ordinal scales, such as the relationship between age and number of previous convictions.

  3. 3

    When would chi-squared be an appropriate statistical test in criminological psychology?

    Model answer

    When analysing the association between two categorical variables, such as whether type of crime committed is associated with gender.

  4. 4

    When would Mann-Whitney U be used in criminological research?

    Model answer

    When comparing scores between two independent groups on an ordinal or interval scale where data are not normally distributed, such as comparing aggression scores between offenders and non-offenders.

  5. 5

    When would the Wilcoxon test be appropriate in criminological psychology research?

    Model answer

    When comparing scores from the same participants on two occasions with ordinal or non-normally distributed data, such as anxiety levels before and after a prison rehabilitation programme.

  6. 6

    What does data analysis in practical research fundamentally involve?

    Model answer

    Examining results to identify patterns, trends, and relationships in the collected data.

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