Frédéric Tomas

Tilburg University | UVT · Tilburg Center for Cognition and Communication "TiCC"

This study proposes a model to understand and explain consumers reactions to artificial intelligence disclosures. Artificial intelligence (AI) has the potential to disrupt the advertising industry as marketers and brands can rapidly create highly engaging personalized content using AI. However, the usage of AI is prone to bias and misinformation an...

This paper is part of the larger ReproHum project, where different teams of researchers aim to reproduce published experiments from the NLP literature. Specifically, ReproHum focuses on the reproducibility of human evaluation studies, where participants indicate the quality of different outputs of Natural Language Generation (NLG) systems. This is...

Studies have used different terms interchangeably to refer to a wide range of phenomena revolving around more-or-less severe forms of online dating deception. In this systematic literature review, we first examine what terms and definitions are commonly used to refer to online dating deception. Results demonstrate the use of heterogeneous terms...

Conspiracy believers often claim to be critical thinkers their 'own research' instead of relying on others' testimony. In two preregistered behavioural studies conducted in the United Kingdom and Pakistan (Nparticipants = 864, Ntrials = 5408), we test whether conspiracy believers have a general tendency to discount social information (in favour of...

Previous literature on lie detection abilities bears an interesting paradox. On the group level, people detect others’ lies at guessing level. However, when asked to evaluate their own abilities, people report being able to detect lies (i.e., self-reported lie detection). Understanding this paradox is important because decisions which rely on credi...

Conspiracy believers often claim to be critical thinkers doing their “own research” instead of relying on others’ testimony. In two preregistered behavioral studies conducted in the UK and Pakistan (Nparticipants = 864, Ntrials = 5408) we test if conspiracy believers have a general tendency to discount social information (in favor of their own opin...

In this paper, we describe our reproduction effort of the paper: Towards Best Experiment Design for Evaluating Dialogue System Output by Santhanam and Shaikh (2019) for the 2022 ReproGen shared task. We aim to produce the same results, using different human evaluators, and a different implementation of the automatic metrics used in the original pap...

Epistemic individualism has recently been considered as a potential explanation for critical thinking and conspiracy theories. We propose in this paper to resolve this paradox. In three studies (N = 1952), we investigate the constituents of epistemic individualism, build a scale, and examine how it explains belief in conspiracy theories. The last s...

The notion of dissociative amnesia is at the heart of several recent court cases related to the development of the #MeToo movement and the resurgence, in victims, of memories related to sexual assault or rape, whether or not of intra-family origin. Dissociative amnesia was, for example, invoked in 2017, in the Calmettes and Flament report, to call...

In this article, we wish to foster a dialogue between theory-based and classification-oriented stylometric approaches regarding deception detection. To do so, we review how cue-based and model-based stylometric systems are used to detect deceit. Baseline methods, common cues, recent methods, and field studies are presented. After reviewing how comp...

À l’origine le terme “documenteur” fait référence dans la littérature à un métrage de fiction, ou encore un canular, reprenant les codes du documentaire. Internet et l’économie de l’attention ont cependant fait émerger un nouveau type de documenteur. Si leurs motivations peuvent varier, allant du pécuniaire à l'idéologie, leur objectif est d’être u...

Introduction Confessions in criminal cases range between 42 and 57%, all crimes considered. However, there is no data specifically on confessions regarding intrafamilial homicides, despite the fact that this subtype of homicide accounts for 30–40% of all homicides. Objective The purpose of the present research aims to establish the links between t...

Cette thèse a évalué la nervosité lors du mensonge par l’analyse du discours. Le grand-public et les policiers adoptent souvent des croyances incorrectes quant au mensonge : il serait détectable par l’analyse du comportement non verbal et l’observation d’indices liés à la nervosité. Nous avons donc souhaité évaluer ces croyances auprès d’officiers...

The aim of this paper is to provide a model illustrating how regretful consensual intercourse may lead to false rape allegations. An intrapersonal perspective of regret based on cognitive dissonance is added to the interpersonal factors already mentioned in the literature. The intrapersonal perspective is discussed in terms of the reduction of a st...

Recent research shows that baseline quality decreases when the second narrative is expected and deceitful. However, a first step would be to investigate whether the writing of a first narrative might influence the second, independently of its expectancy. Based on the cognitive load theory, we hypothesized that second narratives would be less detail...

Information manipulation and cognitive load imposition make the production of deceptive narratives difficult. But little is known about the production of deception, and how its mechanisms may help distinguish truthful from deceitful narratives. This study focuses on the measurement of keystroke dynamics while typing truthful and deceptive eyewitnes...

Aims Studies showed that consensual sex can be regretted, and may lead to a false allegation of rape. However, none of the previous researches concerning regret as a false allegation of rape described the psychological process as to why the alleged victim might experience regret. Method We report a case of false rape allegation motivated by regret...

Denault, V., Rioux-Turcotte, J., & Tomas, F. (2019). La spontanéité du discours, un facteur déterminant la crédibilité des témoins [The spontaneity of discourse, a determining factor of the witnesses credibility]. ScriptUM: La revue du Colloque VocUM 2016, 3, 85-110.

Controlled studies have demonstrated that guilt-presumptive questions usually accompany interviewer guilt bias and accusatory behaviours towards a suspect. When evaluating police-suspect interviews, however, conventional methods primarily focus on the appropriateness of questions, and guilt-presumption is not featured as a questioning strategy. Ins...

We examined law enforcement officers’ knowledge about memory. To do so, we performed two levels of analysis. First we compared memory-related knowledge and erroneous beliefs of officers (n = 200) and lay people (n = 403) and found similar low scores of knowledge between these two groups, and a higher amount of erroneous beliefs among the law enforc...

We examined the knowledge of law enforcement officers regarding memory by conducting two levels of analysis. First, we compared memory-related knowledge and erroneous beliefs of officers (n = 200) and lay people (n = 403) and found similar low scores of knowledge across both groups as well as a greater number of erroneous beliefs among law enforcem...

One of the most debated issues in relation to child sexual abuse (CSA) is whether there should be a limitation period for prosecutions. In 2017 a French ministerial report was released proposing extension of the limitation period in part because of the sometimes long delay between the alleged events and the disclosure of the abuse. For this, the re...

Research on deception has been ongoing for decades. Its most recent prominent approach has been cognitive load. The use of cognitive load strategies has provided a useful framework to toughen the enunciation of deceitful narratives. Recent work has shed light on the need to test and better understand cognitive load. We provide here a first account...

Denault, V., Rioux-Turcotte, J., & Tomas, F. (2016, November). La spontanéité du discours, un facteur déterminant la crédibilité des témoins [The spontaneity of discourse, a determining factor of witnesses credibility]. Presentation at the Colloque VocUM 2016, Montreal, Canada.

In a study concerning beliefs about facial cues of deception, Delmas et al. (2015) showed that 17 facial features were said to be more present during a lie (e.g., lip wipe) and nine less present (e.g., disgust). However, the seriousness of lie induction was not taken into account, whereas literature dinstinguishes trivial lies from serious ones. Tr...

Demarchi, S., St-Yves, M., Rochat, N., Tomas, F., Delmas, H., & Denault, V. (2016, June). The impact of erroneous beliefs and non-scientific practices in the judicial process. Symposium conducted at the 9th Annual Conference of the International Investigative Interviewing Research Group, London, United Kingdom. Abstract : This symposium addresses...

Linguistic tools showed how words determine authentic and deceptive discourses (Burgoon et al. 1996), but have never been considered with this aim in French. We used the material from Delmas et al. (2014) in which 40 participants watched a robbery video. They were asked to mentally associate with the thief. To produce deceitful testimonies and moti...

Cette étude se penche sur les domaines de l’im/politesse de type face-saving et de l’èthos de chef au travers du débat du second tour opposant François Hollande à Nicolas Sarkozy en 2012. La théorie démontre qu’un lien de causalité existe entre ces deux concepts, mais celui-ci n’a jamais été démontré pratiquement. Nous avons formulé l’hypothèse que...