The mental aptitudes are considered valid because they are timed accurately and the answers are finite. There are two built-in scales in all of our instruments to determine the consistency of the personality portion. One validity scale deals with 'distortion' and 'exaggeration', which measures the candidness of the applicant's responses. The other scale addresses 'equivocation', wherein the applicant may select too many indecisive or neutral answers, thus 'diluting' the results. These validity factors are included in each report and are very valuable in the reliability of the employment assessment tests.