Psychometric testing is used to assist with the recruitment, selection, and development of individuals. Psychometric tests are carefully designed to assess your skills, talents, and attributes and to assist in the process of placing you into a role that matches both your abilities and motivations.
Psychometric tests are often used in conjunction with a number of other tools including resume, interviews, assessment centres, and job trials. Employers use psychometric testing to aid their decision-making process because it is believed to be an objective (not influenced by the recruiter's personal opinions) and valid (predictive of performance) method.