In Your Face(t)-Personality Traits Interact With Prototypical Personality Faces in Economic Decision Making

Neural dynamics of personality trait perception and interaction preferences

According to recent research, self-reported Big Five personality traits are associated with preferences for faces that are representative of certain Big Five traits. Previous research has primarily focused on either preference for distinct prototypical personality faces or the accuracy of trait ratings for these faces. However, the underlying neural correlates involved in the processing of prototypical personality faces are unknown. In the present study, we aim to bridge this gap by investigating whether participants' Big Five personality traits predict preferences to interact with individuals represented by prototypical personality faces, as well as the neural processing of these facial features. Based on theoretical considerations and previous research, we focus on trait extraversion, agreeableness and neuroticism, and corresponding prototypical faces. Participants were asked to classify prototypical faces as above or below average representative of a certain trait, and then provide an interaction preference rating while face-sensitive event-related potentials (N170 and late positive potential) were measured. In line with our hypotheses, the results showed an interaction preference for faces that were perceived as high (vs. low) extraverted and agreeable and low (vs. high) neurotic. In addition, the preference for agreeable faces interacted with personality characteristics of the perceiver: The higher a persons' score on trait agreeableness, the higher the face preference ratings for both prototypical and perceived high agreeable faces. Analyses of ERP data showed that an increase in preference ratings for prototypical agreeable faces was paralleled by an increase of the late positive potential. Notably, the N170 did not show any neural signature of the hypothesized effects of personality faces. Together, these results highlight the importance of considering both perceiver characteristics as well as perceived features of an interaction partner when it comes to preference for social interaction.Protocol registration The stage 1 protocol for this Registered Report was accepted in principle on the 8th of May 2023. The protocol, as accepted by the journal, can be found at: https://doi.org/10.17605/OSF.IO/G8SCY .

Top-down modulation impairs priming susceptibility in complex decision-making with social implications

Could social context variables prime complex decisions? Could top-down processes impair this priming susceptibility? Complex decisions have been mainly studied from economic and moral perspectives, and Dual Process Theories provide evidence of how these processes could be affected. To address these issues from a political perspective, online experiments were conducted. Participants (n = 252) were asked to choose a face from 4 options, each associated with different frequencies (repetition priming) or with phrases with different emotional valence (emotional priming), for an unspecified task (UST group) or an important task (IMT group). The most repeated face was chosen most in the UST group, and was associated with lower response times. Positive faces were equally chosen by both groups. To compare results in a more ecological situation, a social study was conducted during the 2019 Argentine Presidential Election, including online surveys (n = 3673) and analysis of news media mentioning candidates. The familiarity and trust to each candidate explained the voting-probability for most of them, as well as correlated with their frequency of mentions in the news, their positive associations, and election results. Our results suggest complex decision-making is susceptible to priming, depending on top-down modulation.

The role of social context in risky decision-making: Presence of friend and low resistance to peer influence increase risky decision-making

Following sociocultural and personality theory, the current study addresses the need to investigate the influence of the social context and related personality variables on risky decision-making. Risky decision-making was assessed in six daily-life scenarios in a sample of 357 adult participants, ages 18-75. Scenarios differed regarding competition (competitive vs. non-competitive) and presence of others (alone, with friends, or with acquaintances). Additionally, the personality variables ego-strength, agreeableness, and resistance-to-peer influence as well as demographic variables were assessed. Results showed that participants made more risky decisions in the non-competitive scenarios and in the scenarios when they were accompanied by a friend compared to when they were alone. Regression analyses revealed that men made more risky decisions than women. High resistance-to-peer influence and agreeableness whereas related to fewer risky decisions. Overall, results showed the strong influence of social and personality factors on risky decision-making which could have implications for prevention programmes. Further, these results show that a pure cognitive approach to the study of risky decision-making is too narrow. Considering cognition, social context, and personality traits together seems to be a promising approach for the study of risky daily-life decisions.