Ways of Assessing Reliability

• Test-retest reliability?

  Ability to produce the same results every time the test is carried out
• Inter-observer reliability?

  The extent to which there's an agreement between 2 or more observers who have observed the same thing
• Reliability?

  If the experiment is repeatable
• Which type of reliability should be used when assessing observations?

  Inter-observer
• Which type of reliability should be used when assessing questionnaires and tests?

  Test retest
• Which type of reliability should be used when assessing experiments?

  Test retest