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.[1] 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.[2][3][4] 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.[5] Neurotic extroverts, for example, would experience high levels of both positive and negative emotional states, a kind of "emotional roller coaster". https://en.wikipedia.org/wiki/Neuroticism

Another definition focuses on emotional instability, negative emotionality, or maladjustment as opposed to emotional stability or good adjustment. It has also been defined in terms of reduced self-control and impaired ability to manage psychological stress. This aligns with the conceptualization offered by Barlow and colleagues, where neuroticism is understood as a trait with genetic, neurobiological, and environmental roots. In this framework, neuroticism is marked by stress-specific reactivity as well as beliefs that the world is an unsafe or unpredictable place and difficult to cope with.

Like other personality traits, neuroticism is typically viewed as a continuous dimension rather than a discrete state.

Thompson (2008) systematically revised these measures to develop the International English Mini-Markers which has superior validity and reliability in populations both within and outside North America

Neuroticism has been included as one of the four dimensions that comprise core self-evaluations, one's fundamental appraisal of oneself, along with locus of control, self-efficacy, and self-esteem. The concept of core self-evaluations was first examined by Judge, Locke, and Durham (1997), and since then evidence has been found to suggest these have the ability to predict several work outcomes, specifically, job satisfaction and job performance.

Neuroticism is highly correlated with the startle reflex in response to fearful conditions and inversely correlated with it in response to disgusting or repulsive stimuli. This suggests that Neuroticism may increase vigilance where evasive action is possible but promote emotional blunting when escape is not an option

A measure of the startle reflex can be used to predict the trait neuroticism with good accuracy; a fact that is thought by some to underlie the neurological basis of the trait.

Mental disorder correlations

Questions used in many neuroticism scales overlap with instruments used to assess mental disorders like anxiety disorders (especially social anxiety disorder) and mood disorders (especially major depressive disorder) (depression), which can sometimes confound efforts to interpret N scores and makes it difficult to determine whether each of neuroticism and the overlapping mental disorders might cause the other, or if both might stem from other causes. Correlations can be identified.

Recent research further support the process linking neuroticism to internalizing psychopathology. Individuals with higher levels of neuroticism are more likely to engage in repetitive negative thinking and exhibit greater anxiety sensitivity, both of which increase vulnerability to anxiety and depressive disorders

Mood disorders

Disorders associated with elevated neuroticism include mood disorders, such as depression and bipolar disorder. Mood disorders tend to have a much larger association with neuroticism than most other disorders.

Personality disorders

A 2004 meta-analysis attempted to analyze personality disorders in light of the big five-factor personality theory and found that elevated neuroticism is correlated with many personality disorders.

Theories of causation

Mental-noise hypothesis...this noise originates from two sources: mental preoccupations and reactivity processes.

Evolutionary psychology

The theory of evolution may also explain differences in personality. For example, one of the evolutionary approaches to depression focuses on neuroticism and finds that heightened reactivity to negative outcomes may have had a survival benefit, and that furthermore a positive relationship has been found between neuroticism level and success in university with the precondition that the negative effects of neuroticism are also successfully coped with.

Terror management theory

According to terror management theory (TMT) neuroticism is primarily caused by insufficient anxiety buffers against unconscious death anxiety.

Genetic and environmental factors

Neuroimaging studies with fMRI have had mixed results, with some finding that increased activity in the amygdala and anterior cingulate cortex, brain regions associated with arousal, is correlated with high neuroticism scores, as is activation of the associations have also been found with the medial prefrontal cortex, insular cortex, and hippocampus, while other studies have found no correlations.

Epidemiology

A research over large samples has shown that levels of neuroticism are higher in women than men

Maladaptive (risky) behaviors

When neuroticism is described as a personality trait that measures emotional stability, research has indicated that it is also involved in maladaptive behaviors to regulate an individual's emotions. High levels of neuroticism in an individual are associated with anxiety and overthinking, as well as irritability and impulsiveness.

To cope with the negative emotionality, these individuals may engage in maladaptive forms of coping, such as procrastination, substance abuse, etc. With these internal pressures, due to these negative emotions, neuroticism often relates to difficulties with emotion regulation, leading to engagement in divergent (risky) behaviors.

This is relevant to neuroticism because it is also associated with impulsivity. One of the distinct traits of impulsivity is called urgency, which is a predisposition to experiencing strong impulses that can lead to impulsive behavior, while dealing with the negative emotions attached

Interventions

A systematic review of intervention studies published between 1998 and 2023 found that most interventions reported positive reductions in neuroticism following treatment. However, researchers also noted considerable variation in participant characteristics, intervention methods, and study designs, suggesting that additional research is needed to determine which approaches produce the most consistent long-term improvements. See wright-et-al-2026-a-systematic-review-and-taxonomy-of-neuroticism-interventions-for-the-general-public