Ecological validity-The extent to which behaviours observed and recorded in a study reflect the behaviours that actually occur in the real world.
High concurrent validity is where there is close agreement between the data produced by the new test compared to the established test. Close agreement is indicated if the correlation between the two sets of data produced by the two tests exceeds +0.8.
Face validity-A simple form of validity that refers to whether a test, scale, or measure appears to measure what it claims to measure, just by looking at it “on the face of it.”
