Aptitude test measures the talent or potential ability to do something. This test is more valid when an applicant has had little or no experience along the lines of the job opening. It is generally applied in seeking a candidate for a clerical position. This type of test may also be used to train the workers when there is a technical change in machines and methods. A person who is interested in a job or task does much better than a person who is not interested in the job.
Interest is a factor that contributes to success on the job.
Interest test is an inventory of likes and dislikes in relation to occupations, hobbies and recreational activities. These tests measure interest of outdoor, computational, scientific, persuasive, literary, musical, social activities . Such tests facilitate the employer in placing a person for a suitable job. Personality comprises the totality of individual brilliance and emotional tendencies. Personality tests propose to discover an individual's value system, emotional maturity, and moods which generally affect his working.