Psychometric assessments can be generated from information ascertained through questions that are posed about psychological functioning and potential future behavior. When relevant questions are stated the answers can create a road map to personality and/or work related traits. When interviewing for a job there is very of this information that is actually conveyed. The type of personality traits you would see in the workplace are not always so apparent during a job interview. The psychometric test can dig deeper and evaluate the prospective employee, exposing a fuller more comprehensive picture of that person. This flushing out of the true personality is a highly effective way to be able to make informed well thought out decisions about hiring. The assessment test usually only takes 15-30 minutes, however there are tests that are longer but I wouldn’t recommend it for an interview setting. The 15-30 minute test is appropriate and extremely thorough as it is.