What is a psychometric test?
Posted by Cynthia W on 25 October 2006 03:47 PM

A psychometric test is a measure of a psychological construct (such as personality or aptitude) that has been constructed according to psychometric principles.  In addition, the test should be administered, scored and interpreted in a standardised manner.  Psychometric principles means that the test was developed in the following manner:

  1. Constructed according to a valid theoretical rationale
  2. Items (questions) developed on the basis of that rationale and in order to assess the construct the test purports to measure
  3. Trialling of items
  4. Analysis of the items for reliability and other statistical properties
  5. Refinement of the items on the basis of the analysis
  6. Re-trialling of the items
  7. Further analysis and retrialling as necessary to provide a reliable scale
  8. Validation research to ensure that the test constructs measure what they purport to measure and to assess whether the test can also predict meaningful outcomes such as performance
  9. Standardisation and development of a norm group for comparative purposes
  10. Writing up of all of the above in the test's technical manual.