Many times, this sample is inadequate. For example, first impressions are often inaccurate. A more serious limitation is that it is hard to express the results of an interview in quantitative terms. In general, the results can be communicated only in word descriptions, not by objective scores. This makes it difficult to compare people by means of the interview or to ascertain whether the interviewer has made a valid measurement.
Interviews combined with objective tests can provide more valid judgments than either alone.
5 Tests provide more objective and representative samples than other methods, including interviews. Today's standardized DISC response form, or instrument, is primarily based on Marston's research but also uses the works of Jung. The DISC system analyzes each factor to reveal a person's strengths and weaknesses, actual behavior, and tendencies toward certain behavior. A person's behavior style is not what makes him or her good or bad, right or wrong. The DISC does not measure a person's intelligence, values, skills, experience, education, or training.