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1.
Front Psychol ; 13: 924351, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36312186

RESUMEN

The purpose of this study was to adapt a Japanese version of the Big Five Inventory-2 (BFI-2-J) to examine its factor structure, reliability, validity, and measurement invariance. The BFI-2-J assesses five domains and 15 facets of the Big Five personality traits. We analyzed two datasets: 487 Japanese undergraduates and 500 Japanese adults. The results of the principal component analysis and confirmatory factor analysis revealed that the domain-facet structure of the BFI-2-J was similar to that of other language versions. The reliability of the BFI-2-J is sufficient. The correlation coefficients between the BFI-2-J and the other Big Five and self-esteem measures supported convergent and discriminant validity. Moreover, we confirmed measurement invariance across age and sex groups in domain-level and facet-level models. The results suggest that the BFI-2-J is a good instrument for measuring the Big Five personality traits and their facets in Japan. The BFI-2-J is expected to be useful in Japanese personality research and international comparative research.

2.
Pers Individ Dif ; 179: 110927, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33897078

RESUMEN

The purpose of this study was to investigate the relationship between personality traits and hoarding behavior during the coronavirus disease (COVID-19) pandemic. An online survey was conducted among 530 Japanese adults (274 women; M age = 44.26, SD age = 8.43) who were living in Tokyo when a state of emergency was declared. Personality traits were assessed using measures of the Big Five personality traits and dispositional greed. They also responded to measures of tendencies to hoard essential and countermeasure products during the COVID-19 pandemic. Correlation analysis revealed that Extraversion, Neuroticism, Openness, and dispositional greed were positively associated with hoarding behavior. Multiple regression analysis revealed that individuals with high Agreeableness, Neuroticism, Openness, and dispositional greed tended to hoard products. The present findings suggest that personality traits account for behavioral responses to the COVID-19 pandemic in Japan. The emergent relationship between hoarding behavior and each personality trait is discussed in relation to the existing literature.

3.
Psychol Aging ; 35(1): 91-96, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31556647

RESUMEN

This study investigated the age differences in the Dark Triad (DT) traits with 2 independent samples. Personality was measured using the Short Dark Triad and the Dark Triad Dirty Dozen. Results showed a significant negative correlation between age and DT traits except for narcissism, which differed between the samples. Significant age-by-sex interaction effects were observed for Machiavellianism and the DT composite score, indicating that women showed a steeper downward age trend in dark personalities. (PsycINFO Database Record (c) 2020 APA, all rights reserved).


Asunto(s)
Maquiavelismo , Narcisismo , Personalidad/fisiología , Psicopatología/métodos , Adulto , Factores de Edad , Envejecimiento , Estudios Transversales , Femenino , Humanos , Japón , Masculino
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