Practical Investigation

• what was the hypothesis for the practical investigation?

  there will be a correlation between participants height (cm) and aggression scores on the Buss-Perry questionnaire.
• what was the null hypothesis

  there will be no correlation between the participants height (cm) and aggression scores on the Buss-Perry questionnaire
• what test was used to calculate the calculated value?

  spearman's rank order correlation coefficient
• what is a strength of the practical investigation?

  the way of measuring aggression scores was done in a way that it was the same for everyone and that meant the scores would be consistent and also reliable
• what was one weakness of the practical investigation?

  one improvement would be to use a larger age range for the participant sample like ages 16-60 from a range of locations rather than using college aged students. therefore better generalisability
• what was the procedure for the practical investigation?

  Everyone had their heights measured in cm and then completed a Buss-Perry questionnaire on aggression. height measured with shoes off and by the same person
• what was the group design?

  repeated groups design