Validity

• Validity 


  Refers to whether something is true or legitimate.
• Internal validity 


  a measure of whether results obtained are solely affected by changes in the variable being manipulated in a cause and effect relationship.
• External validity 


  A measure of whether data can be generalised to other situations outside of the research environment
• Ecological validity 


  A type of external validity and refers to the extent to which psychologists can apply their findings to other settings
• Temporal validity 


  A form of external validity which refers to the extent to which research findings can be applied across time
• Face validity 


  Does the test appear to measure what it says it measures?
• Concurrent validity 


  Where the performance of the test is compared to a test that is already recognised and trusted within the same field