ABSTRACT
The act of lying and its detection have raised interest in many fields, from the legal system to our daily lives. Considering that testimonies are commonly based on linguistic parameters, natural language processing, a research field concerned with programming computers to process and analyse natural language texts or speech, is a topic of interest on this front. This study aimed to examine the linguistic styles of simulated deception and true testimonies collected with the aim of studying witness memory. Study participants were asked to act as a witness of a crime by retelling the story they had just read. Cognitive interviewing techniques were used to collect testimony under two conditions: truth and simulated deception. A sample of 48 participants volunteered to participate in the study. Analyses of the linguistic indicators and content were carried out. Specifically, we performed a comparison of testimonies of the same participant by condition to analyse the variation between (i) lexical and (ii) linguistic features and (iii) content and speech characteristics (disfluencies) depending on the narrative condition. Concerning lexical properties, adjectives were the most-varying grammatical category between truthful and deceptive testimonies. Furthermore, in the linguistic analysis, we observed that truthful testimonies were generally longer than deceptive ones in terms of the number of words and sentences and also characterised by more articulated sentence structures, and these differences were also statistically significant. Regarding the analysis of the content, cognitive criteria (details) and admitting lack of memory were more present in truthful statements. By providing an objective measure, these results are of interest in developing NLP tools for assessing the credibility of testimonies in forensics.
ABSTRACT
Migrants and refugees need international protection, particularly during a crisis such as the current health pandemic. The aim of this research was to examine the mental health and attitudes towards COVID-19 in migrants and refugees compared to the general Spanish population. Moreover, the nature of resilience was examined as a mixed component though life experiences. For this proposal, an interview was carried out in a sample of 245 participants who volunteered to participate in the study. The sample was divided into Spanish non-migrants, Spanish migrants, non-Spanish migrants and refugees. Attitudes towards COVID-19, resilience (based on BRCS) and mental health (based on DASS-21) were measured. The results obtained can be described as follows: (i) Migrant participants indicated worse mental health than non-migrants, and within the migrant group, refugees presented worse scores; (ii) No differences were found in attitudes towards COVID-19 in any of the subgroups; (iii) A moderating effect of group was found for the relationship between resilience and mental health but not between resilience and fear of COVID-19. These results might be of great interest in making visible the vulnerability of migrants and specifically refugees, and the proposal of intervention programs based on resilience training.
