Validity + reliability

• What is reliability?

  measure of consistency.
• Two ways of assessing validity

  • Face validity
  • Concurrent validity
• What is face validity?

  The extent to which a test or measurement appears to measure what it is intended to measure.
• What is concurrent validity?

  The degree to which a new measure or test correlates with an existing and well-established similar one.
• What are the two types of validity?

  Internal validity and external validity.
• What is external validity?

  The extent to which the findings of a study can be generalized to other populations, settings, or conditions.
• What is internal validity?

  The extent to which a study accurately measures the cause-and-effect relationship between variables, without the influence of confounding factors.
• What are the three types of external validity?

  Population, ecological, and temporal.
• What is population validity?

  The extent to which findings from a study can be generalized to the larger population with various genders, ages, and cultures.
• What is temporal validity?

  Generalisability to other periods or eras
• What is ecological validity?

  The extent to which research findings can be generalized to real-world settings and situations.
• What is internal and external reliability?

  Internal: Consistency of measurement within a study.

  External: Consistency of findings despite when it was used or who it was done by.
• What are the ways of assessing reliability?

  Test-retest and inter-rater.
• What is test-restest method?

  Using the same test on the same pps but on a different occasion (not to short that they can remember answer, or too long that their attitudes change)
• What is inter-observer method?

  the agreement between 2 or more observers who independently observed the study.