"Our personality is not set in stone but can change quite significantly over the course of a lifetime. During different phases of life like childhood, adolescence, adulthood, and older age, many factors such as social relationships with parents and friends, school- or job-related influences, economic factors, health status, and more can influence the development of our personality. Importantly, psychological research on personality has strongly focused on personality traits like the well-known big five ( neuroticism, extraversion, openness, conscientiousness, and agreeableness)."
"All volunteers filled out the Short Dark Triad questionnaire, containing 27 questions to determine the individual levels of the three personality aspects of the Dark Triad: Psychopathy: showing antisocial and impulsive behavior with a lack of remorse and guilt. Narcissism: being preoccupied with oneself and focused on one's own interests at the expense of other people's needs. Machiavellianism: being manipulative and focused on self-interest."
Personality can change considerably across life phases due to social, educational, economic, and health influences. Psychological research has concentrated on the big five traits, while darker traits such as psychopathy, narcissism, and Machiavellianism have been less investigated. An online Short Dark Triad questionnaire (27 items) was completed by more than 1,000 Brazilian volunteers aged 18–81 to assess levels of the three traits. The questionnaire measured psychopathy, narcissism, and Machiavellianism. Narcissism remained stable across the lifespan. Developmental trajectories of psychopathy and Machiavellianism across different ages remain less clearly described.
Read at Psychology Today
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