information regarding candidate's knowledge, experience, factors of personality is collected through application and personal interview. But it is not sufficient to evaluate the innate qualities of the applicant, like intelligence, logic, consistency, attitude, aptitude, interest, creativity, devotion to work, morality principle etc. written test is given. Objective and dimensional measurement is possible only through written test and psychological test. These type of test are widely used to know about the personality factors and other merits of the candidate. These type of tests are readily available but sometime according to different professions new tests are developed - But before using these tests, its standardization, norms, reliability and validity should be checked.