Reliability and Validity

• Reliability is a measure of consistancy
• validity- accuracy or truthfullness
• Mundane realism- accuracy to real life tasks
• ecological validity - how accurate the environment is
• Generalisability- ability to apply info to wider context.
• internal validity- validity of study. - Did the Iv really change the Dv?

  Affected by Mundane realism and Evs
• internal validity van be remedies using standardised procedures and Matched pairs design.
• Ecological validity - how well the situation applies to real life .
• population validity