95. In general, a test-retest correlation of +. 80 or greater is considered to indicate good reliability. Again, high test-retest correlations make sense when the construct being measured is assumed to be consistent over time, which is the case for intelligence, self-esteem, and the Big Five personality dimensions.

Does high reliability mean high validity?

If research has high validity, that means it produces results that correspond to real properties, characteristics, and variations in the physical or social world. High reliability is one indicator that a measurement is valid. If a method is not reliable, it probably isn't valid.

What does low reliability mean?

What does low reliability mean? Low reliability: Persons' scores will be different from measurement to measurement. That is, this is not about whether or not they are valid or accurate measures. It's just about whether whatever measures we have are the same from one time to the next.