neuroticism

Neuroticism or negativity is a personality trait associated with negative emotions. It is one of the Big Five traits. People high in neuroticism experience negative emotions like fear, anger, shame, envy, or depression more often and more intensely than those who score low on neuroticism. Highly neurotic people have more trouble coping with stressful events, are more likely to insult or lash out at others, and are more likely to interpret ordinary situations (like minor frustrations) as hopelessly difficult. Neuroticism is closely-related to mood disorders such as anxiety and depression.

Individuals who score low in neuroticism tend to be more emotionally stable and less reactive to stress. They tend to be calm, even-tempered, and less likely to feel tense or rattled. Although they are low in negative emotion, they are not necessarily high in positive emotions, which are more commonly associated with extraversion and agreeableness. Neurotic extroverts, for example, would experience high levels of both positive and negative emotional states, a kind of "emotional roller coaster".