When Did Eysenck Develop Pen Model?
When Did Eysenck Develop Pen Model? The first is Hans Eysenck’s PEN model—psychoticism, extraversion, and neuroticism (Eysenck, 1970), each with what Eysenck believed to be a plausible biological basis. What is a pen model? Home. The PEN model is comprised of three personality dimensions based on psychophysiology: Psychoticism, Extraversion, and Neuroticism. As dimensions of temperament,