Compléter Eysnecks Criminal PersonalityVersion en ligne Psychoticism Neurotic Extroversion par Charlotte Hanson 1 stimulate serotonin overreact Extroversion 'fight Neuroticism three social aggressive Psychoticism personality aroused testosterone criminal conditioned Eysneck's theory is about how a persons can determine whether they will be a . There are dimensions which explain a persons personality . The first is , a person would score highly in this category if they are under - . This means they look for excitement to their brain . They are less easily conditioned meaning they haven't learnt to avoid anti - behaviour . The second is , this represents a person who is unstable . They are overly - responsive to a or flight' situation . They have strong fear reactions and are likely to in situations involving threat . Neurotic people are also less easily . is based on high levels of . People in this dimension are more and lack empathy . The endorphin is not effectively broken down in the brain causing overreactions to stressful situations .