Assessing validity

• Face validity 


  -Least scientific method of assessing validity.

  -Researcher assess at face value whether a measure appears to legitimately measure the construct it's required to.
• Concurrent validity 


  -Researcher designs a questionnaire to intend to measure...

  -Establish questionnaire is given to PP which had agreed/established validity.

  -Has agreed to measure depression e.g. Beck's depression model

  -It's concurrent if your measure is consistent and correlated to the established measure.