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Journal of PsychiatrySelf-Injurious Behaviour: Self Identity, Impulsiveness and Self-Injury in Patients with Borderline Personality Disorders and Bulimia
Journal of Sleep Disorders & TherapyCan Research Confirm Psychopathological Subtypes and Relationship between Recurrent Mood Disorders and Personality Disorders?
Journal of Mass Communication & JournalismThe Effects of Web Site Sequence: Moderating Role of Personalit y Difference
Journal of Clinical & Experimental Dermatology ResearchSensory Neuropeptides, Serotonin Innervations and Personality in Women with Vulvodynia
The Journal of Internet Banking and CommerceCYBER BRANDING: AN EXPLORATORY STUDY OF VIRTUAL ORGANIZATIONS
Personality has to do with individual differences among people in behaviour patterns, cognition and emotion. Different personality theorists present their own definitions of the word based on their theoretical positions.
The term "personality trait" refers to enduring personal characteristics that are revealed in a particular pattern of behaviour in a variety of situations.
Personality can be determined through a variety of tests, such as the Minnesota Multiphasic Personality Inventory (MMPI-2), Rorschach Inkblot test, Neurotic Personality Questionnaire KON-2006  or the Thematic Apperception Test (TAT). The most popular technique is the self-report inventory — a series of answers to a questionnaire that asks participants to indicate the extent to which sets of statements or adjectives accurately describe their own behavior or mental state.
Beginning of study
The study of personality started with Hippocrates' four humours and gave rise to four temperaments. The explanation was further refined by his successor Galen during the second century CE. The "Four Humours" theory held that a person's personality was based on the balance of bodily humours; yellow bile, black bile, phlegm and blood. Choleric people were characterized as having an excess of yellow bile, making them irascible. High levels of black bile were held to induce melancholy, signified by a sombre, gloomy, pessimistic outlook. Phlegmatic people were thought to have an excess of phlegm, leading to their sluggish, calm temperaments. Finally, people thought to have high levels of blood were said to be sanguine and were characterized by their cheerful, passionate dispositions.
Five Factor Model
Personality is usually broken into components called the Big Five, which are openness to experience, conscientiousness, extroversion, agreeableness, and neuroticism (or emotionality). These components are generally stable over time, and about half of the variance appears to be attributable to a person’s genetics rather than the effects of one’s environment.
Some research has investigated whether the relationship between happiness and extraversion seen in adults can also be seen in children. The implications of these findings can help identify children that are more likely to experience episodes of depression and develop types of treatment that such children are likely to respond to. In both children and adults, research shows that genetics, as opposed to environmental factors, exert a greater influence on happiness levels. Personality is not believed to become stable until approximately the age of thirty, and personality constructs in children are referred to as temperament. Temperament is regarded as the precursor to personality. Whereas McCrae and Costa’s Big Five Model assesses personality traits in adults, the EAS model is used to assess temperament in children. This model measures levels of emotionality, activity, sociability and shyness in children. The EAS model is believed to be the equivalent of the Big Five model in adults. Findings show that high degrees of sociability and low degrees of shyness are equivalent to adult extroversion, and also correlate with higher levels of life satisfaction in children.
Another interesting finding has been the link found between acting extroverted and positive affect. Extroverted behaviors include acting talkative, assertive, adventurous and outgoing. For the purposes of this study, positive affect is defined as experiences of happy and enjoyable emotions. This study investigated the effects of acting in a way that is counter to a person’s dispositional nature. In other words, the study focused on the benefits and drawbacks of introverts (people who are shy, socially inhibited and non-aggressive) acting extroverted, and of extroverts acting introverted. After acting extroverted, introverts’ experience of positive affect increased  whereas extroverts seemed to experience lower levels of positive affect and suffered from the phenomenon of ego depletion. Ego depletion, or cognitive fatigue, is the use of one’s energy to overtly act in a way that is contrary to one’s inner disposition. When people act in a contrary fashion, they divert most, if not all, (cognitive) energy toward regulating this foreign style of behavior and attitudes. Because all available energy is being used to maintain this contrary behavior, the result is an inability to use any energy to make important or difficult decisions, plan for the future, control or regulate emotions, or perform effectively on other cognitive tasks.
One question that has been posed is why extroverts tend to be happier than introverts. The two types of explanations attempt to account for this difference are instrumental theories and temperamental theories. The instrumental theory suggests that extraverts end up making choices that place them in more positive situations and they also react more strongly than introverts to positive situations. The temperamental theory suggests that extroverts have a disposition that generally leads them to experience a higher degree of positive affect. In their study of extroversion, Lucas and Baird  found no statistically significant support for the instrumental theory but did, however, find that extraverts generally experience a higher level of positive affect.
Research has also been done to uncover some of the mediatorsTemplate:Disambiguation needed that are responsible for the correlation between extroversion and happiness. Self-esteem and self-efficacy are two such mediators. Self-efficacy has been found to be related to the personality traits of extroversion and subjective well-being. Self-efficacy is one’s belief about abilities to perform up to personal standards, the ability to produced desired results, and the feeling of having some ability to make important life decisions. However, the relationship between extroversion (and neuroticism) and subjective happiness is only partially mediated by self-efficacy. This implies that there are most likely other factors that mediate the relationship between subjective happiness and personality traits. Another such factor may be self-esteem. Individuals with a greater degree of confidence about themselves and their abilities seem to have both higher degrees of subjective well-being and higher levels of extroversion.
Other research has examined the phenomenon of mood maintenance as another possible mediator. Mood maintenance, the ability to maintain one’s average level of happiness in the face of an ambiguous situation (meaning a situation that has the potential to engender either positive or negative emotions in different individuals), has been found to be a stronger force in extroverts. This means that the happiness levels of extroverted individuals are less susceptible to the influence of external events. Another implication of this finding is that extroverts’ positive moods last longer than those of introverts.
It has been shown that personality traits are more malleable by environmental influences than researchers originally believed. Personality differences also predict the occurrence of life experiences.
There has been some recent debate over the subject of studying personality in a different culture. Some people think that personality comes entirely from culture and therefore there can be no meaningful study in cross-culture study. On the other hand, others believe that some elements are shared by all cultures and an effort is being made to demonstrate the cross-cultural applicability of “the big five”.
Historical development of concept
The modern sense of individual personality is a result of the shifts in culture originating in the Renaissance, an essential element in modernity. In contrast the Medieval European's sense of self was linked to a network of social roles: "the household, the kinship network, the guild, the corporation - these were the building blocks of personhood", Stephen Greenblatt observes, in recounting the recovery (1417) and career of Lucretius' poem De rerum natura: "at the core of the poem lay key principles of a modern understanding of the world." "Dependant on the family, the individual alone was nothing," Jacques Gélis observes.
The biological basis of personality is the theory that anatomical structures located in the brain contribute to personality traits. This stems from neuropsychology, which studies how the structure of the brain relates to various psychological processes and behaviors. For instance, in human beings, the frontal lobes are responsible for foresight and anticipation, and the occipital lobes are responsible for processing visual information. In addition, certain physiological functions such as hormone secretion also affect personality. For example, the hormone testosterone is important for sociability, affectivity, aggressiveness, and sexuality. Additionally, studies show that the expression of a personality trait depends on the volume of the brain cortex it is associated with.
High neuroticism is an independent prospective predictor for the development of the common mental disorders.
|40x40px||Look up personality in Wiktionary, the free dictionary.|
- Cult of personality, political institution in which a leader uses mass media to create a larger-than-life public image
- David C. Funder
- Differential psychology
- Human variability
- Offender profiling
- Personality and Individual Differences, a scientific journal published bi-monthly by Elsevier
- Personality crisis (disambiguation)
- Personality rights, consisting of the right to individual publicity and privacy
- Personality style
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