reliability + validity

• What is external validity?

  Being able to generalize skills from one thing to another
• Why is population validity important in research?

  It assesses whether findings can be generalized to other groups of people besides those who participated in the study
• What does internal validity refer to?


  Whether a test assesses what it needs to assess
• What is face validity?


  It refers to whether the items on a test look like they are assessing what the researcher intends to assess
• What does construct validity assess?

  Whether a test assesses the underlying concepts or constructs
• How is concurrent validity established?

  By comparing performance on a new test with a previously validated test on the same topic
• What does criterion validity refer to?

  It refers to the extent that test scores can predict future behavior or attitude
• what is internal reliability?

  
  

  measure of whether "something" is consistent within itself
• what is inter-rater reliability?

  how consistent researchers are with one another
• what is test retest?


  the same psychological test is given to the same participants on two occasions to see whether the same result is obtained
• what is split-half reliability?

  method-test items are split into two halves and the scores on both halves are compared
• what is external reliability?

  a measure of whether something varies from one time to another