Reliability and validity

Cards (21)

  • What is reliability?
    The consistency of research
  • What are the different ways to assess reliability?
    • Inter-rater reliability
    • Test-retest reliability
  • What is inter-rater reliability?

    Independently research, observe, then compare results with another researcher
  • What is internal reliability?
    The study is consistent in itself
  • What is external reliability?
    Can anyone repeat the study and get the same results?
  • What is test-retest reliability?

    Repeating the study with the same participants
  • How do we improve reliability?
    • Rewrite ambiguous questions on questionnaires
    • Keeping the same interviewer for every reliability
    • Using standardised instructions
    • Fully operationalised behavioural schedules
  • What is validity?
    Does it test what it claims to test?
  • What is internal validity?

    Can establish cause and effect
  • How do we assess internal validity?
    Face validity
    Concurrent validity
  • What is face validity?

    Seems like it measures what it claims to measure
  • What is concurrent validity?

    Comparing this result with an already established test
  • What is external validity?
    Allows you to generalise
  • What is ecological validity?
    The extent to which results can be generalised to daily life
  • What is population validity?
    The extent to which findings from a study can be generalised to the larger population
  • What is is temporal validity?

    Findings are still relevant
  • How do we assess external validity?
    Replication
    Meta-analysis
  • What is a meta-analysis?
    Aggregating results of many studies of the same topic
  • How do we improve validity?
    • Single blind
    • Double blind
    • Standardised instructions and procedures
  • What is a single blind trial?
    Participants don’t know the aim of the study
  • What are double blind tests?
    Participant and researcher doesn’t know the aims of the study