INSTRUCTIONS ON ASSESSMENT:
1. A researcher is interested in the relationships between the following four variables: On-line game addiction, narcissistic personality traits, self-control, and aggression. Data are collected from a sample of 226 individuals. The data can be found in the assessment SPSS spreadsheet ‘assessment.sav’. (
For each variable, higher values indicate greater levels of the variable. Analyse the data using SPSS and report the results using standard APA conventions. (20 marks)
2. Following the initial analysis conducted in Q1 the researcher goes on to look at which of the variables (On-line game addiction, narcissistic personality traits, and self-control) are the best predictors of aggression. Analyse the data using SPSS and report the results using standard APA conventions. (30 marks)
3. The researcher also thinks that it is possible that there are sex differences for these variables. You will also find codes for males and females in the data set. Analyse the data using SPSS to investigate this, and report the results using standard APA conventions. (20 marks)
4. As I further investigation, the researcher wants to see if playing a violent video game increases levels of aggression. She runs a study in which aggression levels are measured in 40 participants before and after playing a violent video game. Use SPSS to compare the variables Aggro_pre and Aggro_post in order to answer this question. (10 marks)
Assignment Brief 2021 Page 2 of 4 5. Explain the advantage of reporting effect sizes in addition to significance levels. (20 marks)

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