In every personality there is a hierarchy of needs. These are degrees of psychological health in which one must successfully meet the needs at one degree in order to go on to the next degree.
The reliability of a measure is a necessary piece of evidence to support the construct validity of the measure, although a reliable measure is not necessarily a valid measure. Hence, the reliability of any measure sets an upper limit on the construct validity.
Validity is generally defined as the extent to which any measuring instrument measures what ...