Personality's Strong Influence on Addiction

By Angres, Daniel | Addiction Professional, Summer 2015 | Go to article overview

Personality's Strong Influence on Addiction


Angres, Daniel, Addiction Professional


Key personality traits are not immutable, and that's exciting news for people dependent on substances andz for the experts who treat them. Research has demonstrated that people with certain personality traits, in domains such as low levels of conscientiousness and high levels of neuroticism, are more likely to become addicted. These problematic traits can be identified with personality assessments, and traits that increase the risk for addiction can be modified, with hard work.

We believe that personality variables can influence the severity of addiction and the risk for relapse as well. At the Positive Sobriety Institute (PSI) in Chicago, we analyze an individual's personality traits upon admission, and the information we discover helps us provide an individualized treatment approach.

Many addiction professionals agree that the personality traits of addicted individuals matter. But the discussion usually ends there, largely because of the assumption that there is no malleability with personality, and the belief that it just happens, whether from nature, nurture or the interaction of the two. But based on my professional experience and research, I have seen personality traits change significantly, with the psychological buy-in of the patient, active help from therapists, and participation in 12-Step programs.

At PSI, we use the NEO-Personality Inventory-Revised (NEO-PI-R) instrument. This test reveals areas of personality that research has shown are common problematic traits among addicts. For example, if we note that the patient has high levels of neuroticism, we discuss particular areas of personal functioning that he needs to modify.

There are five major factors in the NEO that can be remembered with the acronym "OCEAN." These are openness, conscientiousness, extroversion, agreeableness and neuroticism. Each factor has six sub-factors. For example, neuroticism is made up of anxiety, angry hostility, depression, self-consciousness, impulsiveness and vulnerability. Based on self-test responses, patients are rated as low, average or high in each subfactor. Armed with this information, we help patients create a plan to improve problematic personality traits.

Research findings

Abundant research has shown that certain personality traits increase susceptibility to addiction, while others are protective against its development. Traits such as high levels of noveltyseeking, impulsivity, neuroticism and harm avoidance (the need to escape from distressing stimuli) often constitute risk factors for addiction. In addition, addicts frequently have lower levels than non-addicts of positive traits such as conscientiousness and persistence. (Note that the names of traits vary with the assessment instrument used.)

Since the mid-1970s, C. Robert Cloninger has researched the impact of personality on individuals, and also developed the Temperament and Character Inventory (TCI). He has analyzed personality traits in many populations, including addicts, prisoners and adoptees, finding significant differences in the studied populations compared to controls. Clearly, personality traits affect behavior.

In 1988, Kenneth J. Sher and colleagues studied 489 subjects prospectively and followed up with 457 of them six years later. These researchers found that impulsive sensation-seeking or behavioral disinhibition was predictive for later substance use disorders (http://bit. ly/INzHjuE).

In 2014, Belcher, Volkow and colleagues noted likely genetic links to personality traits causing individuals to be susceptible to or resilient from substance use disorders. For example, positive emotionality/extroversion (PEM/E) is a condition of high motivation, positive affect, and feelings of excitement and optimism. PEM/E differences may be found in the central dopaminergic system. The researchers said high levels of PEM/E are protective against addiction (http://Lusa.gov/lC3cVaA).

Another personality trait identified by the researchers was negative emotionality/neuroticism (NEM/N). …

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