Cited by 972Personality Traits and PsychologyPersonality Disorders and PsychopathologyCultural Differences and Values

Egos inflating over time: A cross-temporal meta-analysis of the Narcissistic Personality Inventory

Twenge, Jean M., Konrath, Sara, Foster, Joshua D., Keith Campbell, W., Bushman, Brad J.·2008·Journal of Personality

Abstract

A cross-temporal meta-analysis found that narcissism levels have risen over the generations in 85 samples of American college students who completed the 40-item forced-choice Narcissistic Personality Inventory (NPI) between 1979 and 2006 (total n=16,475). Mean narcissism scores were significantly correlated with year of data collection when weighted by sample size (beta=.53, p<.001). Since 1982, NPI scores have increased 0.33 standard deviation. Thus, almost two-thirds of recent college students are above the mean 1979-1985 narcissism score, a 30% increase. The results complement previous studies finding increases in other individualistic traits such as assertiveness, agency, self-esteem, and extraversion.

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Crossref · 10.1111/j.1467-6494.2008.00507.x

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  • NPD symptoms in early adolescence prognosticate violent criminal behavior in mid-adolescence and early adulthood.

    “Johnson et al. (51) found that NPD symptoms in early adolescence prognosticate violent criminal behavior in mid-adolescence and early adulthood (52).”
  • NPD symptoms in early adolescence prognosticate violent criminal behavior in mid-adolescence and early adulthood.

    “Johnson et al. (51) found that NPD symptoms in early adolescence prognosticate violent criminal behavior in mid-adolescence and early adulthood (52).”
  • Narcissism is rising in Western individualistic countries.

    “Narcissism, a personality trait characterized by grandiose and overly positive self-views, is not only rising in Western individualistic countries (Twenge et al., 2008; Twenge and Foster, 2010)”

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Authors
Twenge, J. M., Konrath, S., Foster, J. D., Keith Campbell, W., & Bushman, B. J.
Affiliations
  • San Diego State University (US)
  • University of Michigan (US)
  • University of South Alabama (US)
Corresponding author
Twenge, Jean M.
Venue
Journal of Personality
Publisher
Wiley
Published
2008-07-08
Volume
76
Issue
4
Pages
875-902
ISSN
  • 0022-3506 (ISSN-L)
  • 1467-6494
OpenAlex
W2018401481
Cited by
972
References
112
Citations by year
2026: 18 · 2025: 32 · 2024: 41 · 2023: 30 · 2022: 51 · 2021: 37 · 2020: 71 · 2019: 68 · 2018: 83 · 2017: 70 · 2016: 78 · 2015: 67 · 2014: 67 · 2013: 73 · 2012: 46
FWCI
7.56
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Personality (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Personality Traits and Psychology
  • Social Sciences › Psychology › Clinical Psychology › Personality Disorders and Psychopathology
  • Social Sciences › Psychology › Social Psychology › Cultural Differences and Values
Keywords
narcissism, Narcissistic Personality Inventory, cross-temporal trends, generational change, university students, individualism, self-esteem, extraversion, assertiveness, agency
MeSH terms
Adult, Cross-Sectional Studies, Ego, Female, Humans, Individuality, Internal-External Control, Male, Narcissism, Personality Inventory, Self Concept, Students, Time Factors, United States

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