It is comparable to popular psychometric tests – such as Minnesota Multiphasic Personality Inventory (MMPI), Myers-Briggs Type Indicator (MBTI), and Personality and Preference Inventory (PAPI) – except that the subject matter is focused not on personality traits, but political beliefs. Because an individual voter can interchangeably hold "liberal" views on some issues, but "conservative" views on others, the PIQ Score represents an "average of averages" of an individual’s overall political inclination, to help determine their net, aggregate position on the scale.