Psychometric tests aim to measure mental abilities, aptitude, and personality traits that are relevant for the job. They are used by many large companies during the recruitment and selection process to identify the most suitable candidates. There are different types of psychometric tests that measure things like how well one works with others, handles stress, and can cope with job demands. Popular tests include the 16PF, MBTI, OPQ32, and Rorschach inkblot test. Psychometric tests should be objective, standardized, reliable, predictive, and non-discriminatory.