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Objetivo: A pesar de los beneficios comprobados de la vacunación, las personas difieren en su disposición a vacunarse. Estas diferencias son el resultado de múltiples factores, incluyendo variables sociales, culturales y psicológicas. Este metaanálisis estimó los efectos de los Cinco Grandes rasgos de personalidad de las personas en sus actitudes,...
Context in source publication
Context 1
... 4 illustrates the variations in meta-analytic correlations based on the number of items used for personality trait measurement, the percentage of women in the sample, and average participant age. The point estimates and 95% CIs are presented in Table 3. In contrast to our predictions, we found no significant age effect on the link between agreeableness and vaccination. ...Citations
... This distinction is crucial because personality traits are difficult to influence or consider in individual or official communications, as discussed by several studies and reviews on the stability of personality traits in adulthood [14,15]. Personality traits have been associated with a range of preventive health behaviours, including vaccination [16]. While both personality traits and the 7C antecedents are important concepts that have been related to health behaviours and vaccination, no study to date has explored the how the 7C model may be tied to personality traits. ...
... Nonetheless, the field of research on personality and vaccination has recently been accelerated by public discussions during the COVID-19 pandemic. A 2024 systematic review and meta-analysis presented a convincing picture of notable, although modest, effects of personality traits on vaccination [16]. Individuals with higher levels of agreeableness [36] and extraversion, and lower levels of neuroticism were found to have more positive attitudes towards vaccination. ...
Background
The capacity of the 7C model’s psychological antecedents, which include confidence in vaccines, complacency, convenience, calculation, collective responsibility, confidence in the wider system, and social conformism, to explain variance in COVID-19 vaccine intentions and behaviours has been documented. However, it remains unclear whether the attitudes represented by the 7C psychological antecedents are specific to vaccination or if they are, in fact, an expression of underlying personality traits.
Methods
From February to June 2022, French adults completed self-administered questionnaires assessing COVID-19 vaccination history, the 7C antecedents, and personality traits (“ComCor” and “Cognitiv” studies). Vaccination behaviours were studied through three outcomes: at-least-one-dose vaccination status by 2022 (N = 49,019), up-to-date vaccination status (N = 46,566), and uptake speed of first dose (N = 25,998). Personality traits were evaluated using the French version of the Big Five Inventory (BFI-Fr). Multivariable logistic regressions and Cox models predicting vaccine behaviours were run with the 7C antecedents, both with and without personality traits.
Results
Among the 49,019 participants, 95.0% reported receipt of at least one dose and 89.8% were up to date with recommendations. All 7C antecedents were significantly associated with the outcomes. The inclusion of personality traits did not substantially alter the effect estimates of the association between the 7C antecedents and vaccination behaviours, with differences between effect sizes of models with and without personality traits being < 5%.
Conclusions
Our results suggest that the 7C psychological antecedents of vaccination are not the mere expression of personality and that their impact on vaccine behaviours is independent of personality traits. As such, the 7C antecedents may be modifiable by appropriate information and vaccine promotion.
Trial registration
The “ComCor” study received ethical approval by the Comité de Protection des Personnes Sud Ouest et Outre Mer 1 on 21/09/2020. The addition of the “Cognitiv” questionnaire received ethical approval by the Comité de Protection des Personnes Sud Ouest et Outre Mer 1 on 01/02/2022. The data protection authority Commission Nationale de l’Informatique et des Libertés (CNIL) authorised the processing of data on 21/10/2020. The study is registered with ClinicalTrials.gov under the identifier NCT04607941.
Volitional personality change interventions have been shown to help people change their current personality towards their ideal personality. Here, we address three limitations of this literature. First, we contrast the dominant theoretical perspective of self-improvement with self-acceptance as pathways to reduce the discrepancy between current and ideal personality. Second, we test how well-being aspects change as a by-product of targeting personality. Third, we use a waitlist control group to account for expectancy and demand effects. Across three studies (combined N = 2,094; 1,044 women, 1,050 men; M_age = 30.78, SD_age = 9.70, range_age = 18-105), we implemented randomized online interventions of self-improvement or self-acceptance over a 3-month period, with another follow-up 6 months after baseline and a waitlist control group added in Study 2. Across Studies 1 and 2, participants in both intervention groups reduced discrepancies between current and ideal personality and increased in well-being. In both intervention groups, current personality ratings increased, whereas ideal personality remained stable. Critically, however, control group participants changed in the same fashion, with similar or only slightly smaller effect sizes than participants who received an intervention. Study 3 compared different control group specifications and demonstrated that demand effects elicited by the framing as an intervention explained positive changes in neuroticism, conscientiousness, and extraversion as well as life satisfaction and self-esteem. Thus, the current studies highlight both shortcomings of previous intervention designs and imprecisions in theoretical frameworks of personality change mechanisms. We discuss future directions including multi-method studies, measurement advances, and micro-randomization of intervention components.
