Validity

• What is meant by validity

  Validity refers to whether a study or test is measuring what it claims to be measuring
• ways that a study can lack validity

  • the method of measurement doesn’t measure what it claims to measure
  •  that there are extraneous or confounding variables that affect the measurement
• Ways of assessing validity

  • Face validity
  • Concurrent Validity
• Face validity

  look at the test to see if it appears to measure what it claims to measure
• How to assess the concurrent validity of a test

  we can compare the results obtained to a previous test of the same behaviour, that is known to be valid