matched pairs (strength)

• What type of experimental design did Raine use?

  Matched pairs design
• What is a strength of matched pairs design?

  It controls for participant variables affecting results
• How did Raine match murderers with non-murderers?

  On age and sex
• Why is matching participants a strength in Raine's study?

  It reduces participant variables, increasing internal validity
• How many schizophrenic murderers were matched with non-murderers?

  Six
• What is a weakness of using a matched pairs design?

  It is time-consuming and difficult to match
• What limitation did Raine face in matching participants?

  He only matched murderers with schizophrenia
• What does Raine's inability to match all participants affect?

  It decreases the internal validity of findings
• What could the differences in the NGRI groups be attributed to?

  'Violent predisposition' or mental impairment
• How does the matched pairs design impact confounding variables?

  It decreases the chance of confounding variables
• What is the main focus of Raine's research?

  Differences between NGRI murderers and non-murderers