Validity

• Validity 


  refers to whether a result is accurate
• Internal validity 


  the extent to which the researcher is measuring what they intend to measure.
• External Validity 


  The extent to which the findings from the study can be generalised to other environments, people and times.
• ecological validity 


  results from the study are accurate, done in real world environments. High mundane realism is when behaviour takes place in real life environment.
• temporal validity 


  -results from a study are accurate overtime, still to this day.

  -E.g. Asch's line study has low temporal validity as conformity rates were high when doing the study. It was called a child of it's time as people were more likely to conform.
• population validity 


  -Results from the study can be generalised to other people. Bias sample lacks population validity.

  -E.g. Milgram and Asch's study just had men taking part so can only be generalised to men not women. A stratified sample should be used.