Sensation seeking is a personality trait defined by the search for experiences and feelings, that are "varied, novel, rich and intense", and by the readiness to "take physical, social, legal, and financial risks for the sake of such experiences." Risk is not an essential part of the trait, as many activities associated with it are not risky. However, risk may be ignored, tolerated, or minimized and may even be considered to add to the excitement of the activity. The concept was developed by Marvin Zuckerman of the University of Delaware. In order to assess this trait he created a personality test called the Sensation Seeking Scale. This test assesses individual differences in terms of sensory stimulation preferences. So there are people who prefer a strong stimulation and display a behavior that manifests a greater desire for sensations and there are those who prefer a low sensory stimulation. The scale is a questionnaire designed to measure how much stimulation a person requires and the extent to which they enjoy the excitement. Zuckerman hypothesized that people who are high sensation seekers require a lot of stimulation to reach their Optimal Level of Arousal. When the stimulation or sensory input is not met, the person finds the experience unpleasant.
Components
Sensation-seeking can be divided into 4 traits:

Thrill- and adventure-seeking: Desire for outdoor activities involving unusual sensations and risks, such as skydiving, scuba diving, high-speed driving and flying. Experience-seeking: Referring to new sensory or mental experiences through unconventional choices, also including psychedelic experiences, social nonconformity and desire to associate with unconventional people. Disinhibition: Preference of "out of control" activities such as wild parties, drinking and illegal activities Boredom susceptibility: intolerance of repetition or boring people, and restlessness in such conditions.

The most recent version of the Sensation Seeking Scale (SSS-V) has demonstrated moderate validity and reliability. It has been adapted for use with children.

Relationship to personality models
Zuckerman began researching the personality trait he came to call "sensation seeking" in 1969. Zuckerman argues that sensation-seeking is one of a handful of "core traits" that can be used to describe human personality. Although other researchers including Eysenck, and Costa and McCrae considered the trait to be related to extraversion, factor-analytic studies conducted by Zuckerman suggested that sensation seeking is relatively independent of other major dimensions of personality. A number of studies have found positive correlations between sensation seeking, especially the experience seeking component, and openness to experience. Additionally, negative correlations have been found between agreeableness from the NEO-PI-R and total sensation seeking, and the boredom susceptibility and disinhibition subscales. The honesty-humility factor of the HEXACO model has been shown to be negatively correlated with sensation seeking and risk taking behaviors.
In Zuckerman's alternative five model of personality, sensation seeking has been incorporated as a facet of the broader trait of impulsive sensation seeking. Within Eysenck's "Big Three" model of personality, impulsive sensation seeking is most strongly related to psychoticism and within the Big Five personality traits it is primarily related to (low) conscientiousness. Sensation-seeking has a strong correlation with the Novelty Seeking scale of Cloninger's Temperament and Character Inventory. Furthermore, he presents evidence that this characteristic is influenced by genes. So, sensation-seeking parents are likely to have sensation-seeking children.
Features
Zuckerman's research has found that high sensation seekers tend to seek high levels of stimulation in their daily lives. The scale predicts how well people tolerate sensory deprivation sessions. Sensation seeking increases with age from childhood to adolescence. Studies indicate it increases between 10-15 years and remains stable or declines thereafter. However, boredom susceptibility remains stable across the life span, unlike the other facets of sensation seeking.
Substantial gender differences have been found in sensation seeking, with males scoring significantly higher than females. In American samples, males significantly outscored females in total sensation seeking, thrill and adventure seeking, boredom susceptibility, and disinhibition. Studies in Australia, Canada, and Spain found similar gender differences in total sensation seeking, thrill and adventure seeking and boredom susceptibility.





