Tridimensional Personality Questionnaire. The Tridimensional Personality Questionnaire is a personality test that measures three major personality dimensions: novelty seeking, harm avoidance, and reward dependence. In “The Tridimensional Personality Questionnaire: U.S. Normative Data”, which is based on a national probability sample of 1019 adults in the United States, normative data is considered and the psychometric properties of the questionnaire are discussed. The mean age of the considered sample is 43.2 years and the standard deviation is 18.1.