IMPROVING

• HOW TO IMPROVE RELIABILITY OF QUESTIONNAIRES?

  • remove ambiguous or too complex questions
  • replace open questions with closed questions
• HOW TO IMPROVE RELIABILITY OF INTERVIEWS?

  • use same interviewer
  • train multiple interviewers in same way
  • structured (avoid leading questions)
  • reduces interviewer bias
• HOW TO IMPROVE RELIABILITY OF EXPERIMENTS?

  • instructions and procedures are standardised
  • control extraneous variables
• HOW TO IMPROVE RELIABILITY OF OBSERVATIONS/ CONTENT ANALYSIS?

  • careful operationalisation
  • explanation of behavioural categories/ themes
  • independent with minimal overlap
  • check behavioural categories by multiple observers in a pilot study