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Psychological Trait Analysis From the late 1970's Hans Eysenck modified his two dimensional model of personality to allow for a third trait known as Psychoticism. This trait, now portion of Eysenck's Psychoticism-Extraversion-Neuroticism version of psychology, is a blueprint situated in personality that Eysenck found and defined as the aggressive part of personality. It's from psychoticism which Eysenck believed all hostility in people derived from. By Eysenck's studies in the development of psychosis that he began to form a concept that there was a correlation between high levels of this specific trait and the progression of mental issues such as schizophrenia. He also believed that psychoticism was grounded into hereditary biology. He studied whether directly associated individuals shared elevated levels of psychoticism and, if this shaped a genuine significance, that he could then discover the element of their genetic structure of human beings who housed psychoticism. Over time Eysenck started to find similarities to other variable models of personality such as the three-factor model developed by Auke Tellegen. This was seen by Eysenck in the simple fact that psychoticism could be further broken down to smaller traits like impulsiveness through using factor analysis. From this point impulsiveness may be dismantled even further by dividing it into pieces like rick-taking such as. It's from this point that Eysenck's critics have found that they believe the trait by itself is too wide to be described as a single trait. Many critics of Eysenck's theory of psychoticism for a aspect of character agree that the massive amount of correlation to other, additional defined models means that psychoticism requires more variable analysis to satisfactorily describe personalit...