Self-Reported ICD-11 Personality Disorder Severity in Peruvian Adolescents: Structure, Validity, and Tentative Cutoffs.

Personality disorder (PD) is particularly common in adolescents, which underscores the significance of early screening, diagnosis, and intervention. To date, the definition of PD in the new ICD-11 has not yet been investigated in adolescents. This study therefore aimed to investigate the unidimensionality and criterion validity of self-reported ICD-11 PD features in Peruvian adolescents using the Personality Disorder Severity ICD-11 (PDS-ICD-11) scale. A total of 1,073 students (63% female; age range 12-16 years) were administered the PDS-ICD-11 scale along with criterion measures of personality pathology and symptom distress. The PDS-ICD-11 score showed adequate unidimensionality and conceptually meaningful associations with external criterion variables. The findings indicate that ICD-11 PD features, as measured with the PDS-ICD-11 scale, are structurally and conceptually sound when employed with adolescents. Norm-based cutoffs derived from the present study may be used for clinical interpretation. The PDS-ICD-11 may be employed as an efficient screening tool for personality dysfunction in adolescents.

Association between personality traits, eating behaviors, and the genetic polymorphisms FTO-rs9939609 and MAO-A 30 bp u-VNTR with obesity in Mexican Mayan children.

Introduction: Genetic variants that control dopamine have been associated with obesity in children through loss of control of satiety and impulses, the manifestation of addictive eating behaviors, and specific personality traits. The variants include FTO-rs9939609 and the MAO-A 30 pb u-VNTR low-transcription alleles (LTA). Objective: To evaluate the genetic association of FTO-rs9939609 and the MAO-A LTA, along with personality traits and eating behavior with obesity in Mayan children from Mexico. Methods: We cross-sectionally evaluated 186 children (70 with obesity and 116 with normal weight) 6-12 years old from Yucatan, Mexico. Nutritional status was defined with body mass index (BMI) percentiles. Personality traits were evaluated with the Conners and TMCQ tests; eating behavior was evaluated with the CEBQ test. Genotyping with real-time PCR and TaqMan probes was used for FTO-rs9939609, whereas PCR amplification was used for MAO-A u-VNTR. Results: High-intensity pleasure (p = 0.013) and moderate appetite (p = 0.032) differed according to nutritional status. Heterozygous FTO-rs9939609 T/A children showed higher mean scores of low-intensity pleasure (p = 0.002) and moderate appetite (p = 0.027) than homozygous T/T. Hemizygous boys having MAO-A LTA showed significantly higher mean scores of anxiety (p = 0.001) and impulsivity (p = 0.008). In multivariate models, only LTA alleles of MAO-A explained obesity in boys (OR = 4.44; 95% CI = 1.18-16.63). Conclusion: In the present study, MAO-A u-VNTR alleles were associated with obesity in multivariate models only in boys. These alleles might also have a role in personality traits such as anxiety and impulsivity, which secondly contribute to developing obesity in Mayan boys.

Characteristics of hallucinations in borderline personality disorder. Similarities and differences with schizophrenia and bipolar disorder / Características de las alucinaciones en el trastorno límite de la personalidad. Similitudes y diferencias con la esquizofrenia y el trastorno bipolar.

Psychosis can be considered a dimension that in its most severe extreme can be expressed with alterations in sensory perception, mainly hallucinations. Their presence is a fact that is frequently observed in severe psychiatric pathologies such as schizophrenia (EZQ) and bipolar disorder (BD) where they can be markers of severity. However, sensory-perceptual disturbances are not pathognomonic of these disorders, nor do they signal any of these illnesses as an isolated event. Such symptomatology can be described in a variety of situations both within and outside psychopathology. In this sense, proposing a direct line between hallucinations and diseases such as CZS or TB disregards their occurrence in other pathologies, as is the case of Borderline Personality Disorder (BPD). It is feasible that we may find the expression of pseudo hallucinations or hallucinations in patients with this disorder and their presence may have etiological, clinical and therapeutic connotations that should be reviewed and taken into account in our clinical practice.

La psicosis puede ser considerada una dimensión que en su extremo de mayor gravedad puede expresarse con alteraciones en la sensopercepción, principalmente alucinaciones. Su presencia es un hecho que se constata con frecuencia en patologías psiquiátricas severas como la esquizofrenia (EZQ) y el trastorno bipolar (TB) donde pueden ser marcadores de gravedad. No obstante, las alteraciones sensoperceptivas no son patognomónicas de estos trastornos ni señalan ninguna de estas enfermedades como un hecho aislado. Dicha sintomatología puede ser descripta en diversas situaciones dentro y fuera de la psicopatología. En este sentido, proponer una línea directa entre las alucinaciones con enfermedades tales como la EZQ o el TB desestima su ocurrencia en otras patologías, como es el caso del Trastorno límite de la personalidad (TLP). Es factible que constatemos la expresión de alucinaciones en pacientes con este trastorno y su presencia puede tener connotaciones etiológicas, clínicas y terapéuticas que deben ser revisadas para tener en cuenta en nuestra práctica clínica.

Validation of a Questionnaire for Equine Personality Assessement.

We propose a practical method of assessing the personality of horses using five personality axes. Four evaluators empirically judged 19 horse individuals on specific adjectives for each axis. To validate the questionnaire, four behavioral tests were conducted with these same animals (social interactions, novel object test, bridge test,and arena test). In this tests, the frequency of specific behaviors were evaluated to create a scale related to the same personality adjectives and judge the animals based on their reactions.The questionnaire was reliable in determining the personality of horses, since the results were consistent with those obtained through behavioral tests. Additionally, in this group of horses attention reactions were more frequent than fear reactions, but significant differences occurred among tests. This study proposes a practical questionnaire for owners and trainers to assess the personality of their horses. The application of this tool can improve the relationship between humans and horses, directing a more empathic approach in the everyday routine with these animals.

Automatic detection of facial expressions during the Cyberball paradigm in Borderline Personality Disorder: a pilot study.

Borderline Personality Disorder (BPD) symptoms include inappropriate control of anger and severe emotional dysregulation after rejection in daily life. Nevertheless, when using the Cyberball paradigm, a tossing game to simulate social exclusion, the seven basic emotions (happiness, sadness, anger, surprise, fear, disgust, and contempt) have not been exhaustively tracked out. It was hypothesized that these patients would show anger, contempt, and disgust during the condition of exclusion versus the condition of inclusion. When facial emotions are automatically detected by Artificial Intelligence, "blending", -or a mixture of at least two emotions- and "masking", -or showing happiness while expressing negative emotions- may be most easily traced expecting higher percentages during exclusion rather than inclusion. Therefore, face videos of fourteen patients diagnosed with BPD (26 ± 6 years old), recorded while playing the tossing game, were analyzed by the FaceReader software. The comparison of conditions highlighted an interaction for anger: it increased during inclusion and decreased during exclusion. During exclusion, the masking of surprise; i.e., displaying happiness while feeling surprised, was significantly more expressed. Furthermore, disgust and contempt were inversely correlated with greater difficulties in emotion regulation and symptomatology, respectively. Therefore, the automatic detection of emotional expressions during both conditions could be useful in rendering diagnostic guidelines in clinical scenarios.

Trastornos del espectro autista, trastornos por déficit de atención hiperactividad y desregulación emocional: enmascaramiento y abordaje / Autistic spectrum disorders, attention deficit disorders, hyperactivity and emotional dysregulation: masking and approach

Resumen Los Trastornos del Espectro Autista (TEA) y los Tras tornos por Déficit de Atención Hiperactividad (TDAH) son Trastornos del Neurodesarrollo (TN) que coexisten frecuentemente y que tienen factores etiológicos, bio lógicos, clínicos en común. La comorbilidad de ambos TN se asocia a un retraso en el diagnóstico del TEA o un diagnóstico que nunca llegan a recibir y es frecuente el desarrollo de alteraciones perceptivas, emocionales, cognitivas y conductuales relacionadas con la Desregu lación Emocional (DE). Cuando ambos TN no son diag nosticados en infancia, frecuentemente reciben diag nósticos equivocados en edades más tardías, siendo el más frecuente el Trastorno Límite de Personalidad (TLP). Se analiza la presentación clínica de la asociación del TEA y el TDAH, la asociación con DE, diferenciación del TLP y evaluación e intervención. La comorbilidad TEA, TDAH, DE, es un trastorno más severo, asociado a poli farmacología y a ingresos hospi talarios.

Abstract Autism Spectrum Disorders (ASD) and Attention Defi cit Hyperactivity Disorders (ADHD) are Neurodevelop mental Disorders (ND) that frequently coexist together and have etiological, biological, and clinical factors in common. The comorbidity of both neurodevelopmental disorders is associated with a delay or lack of ASD di agnosis and the development of perceptual, emotional, cognitive and behavioral alterations related to Emotional Dysregulation (ED) is common. When both TN are not diagnosed in childhood, they frequently receive wrong diagnoses at later ages, the most frequent being Border line Personality Disorder (BPD). The clinical presentation of the association of ASD and ADHD, the association with ED, differentiation of BPD, and evaluation and intervention are here analyzed. The comorbidity ASD, ADHD, ED is a more severe disorder associated to polypharmacology and hospital admissions.

Big five personality traits, gaming motives, and regular and disordered gaming: A cross-national examination among college student gamers in seven countries.

INTRODUCTION: Previous research has shown that personality traits and gaming motives are important predictors for explaining regular and disordered gaming. However, the mediating role of gaming motives in the relation between personality traits and video game outcomes (e.g., time spent gaming or disordered gaming) has been scarcely studied and limited cross-national studies have addressed this issue. The present study aimed to examine the direct and indirect effects of the Big Five personality traits on weekly gaming and disordered gaming via gaming motives across seven countries. METHOD: 3540 college student gamers (59.5% women) from the U.S., Canada, Spain, Argentina, Uruguay, South Africa and England completed the online survey. Structural equation modeling was conducted to test models. Multigroup models were employed to test model invariance across countries. RESULTS: Significant, albeit weak, relations were found between personality traits and gaming outcomes, and were mediated mostly by coping motives in predicting disordered gaming, and by social interaction and recreation (to a lesser extent) motives in predicting weekly gaming. Some minor, yet significant, differences across countries appeared and are discussed in detail. DISCUSSION: The present findings indicate that the differential interrelations between personality traits, gaming motives, and video gaming outcomes may be generalized in college students across countries.

Psychometric Properties of the Personality Inventory for DSM-5 faceted Brief Form in a Brazilian Community Sample.

OBJECTIVE: The aim of the present study was to verify the psychometric qualities of the PID-5-FBF in a community sample of Brazilian adults. The internal consistency of the facets and the internal structure of the dimensions were checked. In addition, we verified the correlations between the PID-5-FBF facets and domains with a five-factor model measure. METHODS: The sample of this study consists of the 774 Brazilian adults aged 18 to 73 years (mean 28.9±11.58) who answered the PID-5-FBF and BFI-2S. RESULTS: The alpha values were adequate. The internal structure was similar to the PID-5 original form. All the factors and dimensions of the PID-5-FBF have a negative association with agreeableness, while, on the other hand, all correlations with neuroticism were positive. Neuroticism was the factor with the highest correlation with the PID-5-FBF, and openness was the one with the lowest number of correlations. CONCLUSIONS: This research contributes to adding evidence of validity to the PID-5-FBF in the Brazilian community sample. Our results are important because it is the first study with the PID-FBF in a Brazilian sample.

The underlying structure of the Personality Inventory for DSM-5 (PID-5): a general factor of personality psychopathology.

BACKGROUND: The psychopathology of personality is currently undergoing a paradigm shift from a categorical to a dimensional approach. This work aimed to study the underlying structure of pathological personality traits of the DSM-5 Alternative Model for Personality Disorders (AMPD). For this purpose, the internal structure of a version of the Personality Inventory for the DSM-5 (PID-5) was examined by a confirmatory factor analysis. This version assesses the five higher-order pathological personality domains (negative affectivity, detachment, antagonism, disinhibition, and psychoticism) and the 25 lower-order pathological personality facets through a reduced number of items. Four alternative models were compared: five-factor oblique; second-order (five first-order factors and one second-order factor); bifactor (five specific factors and a general factor), and one-factor. PARTICIPANTS AND PROCEDURE: We worked with an Argentinean sample of N = 525 subjects from the general population who answered the Argentine version of the PID-5. RESULTS: The five-factor model was slightly superior to the second order model, and the bifactor model presented the best fit. CONCLUSIONS: These findings, while preliminary, suggest that the PID-5 facets could reflect five specific pathological personality traits (which correspond to AMPD domains) but also a general factor (which would reflect a general propensity for psychopathology).

Human olfactory neural progenitor cells reveal differences in IL-6, IL-8, thrombospondin-1, and MCP-1 in major depression disorder and borderline personality disorder.

Background: Discovering biological markers is essential for understanding and treating mental disorders. Despite the limitations of current non-invasive methods, neural progenitor cells from the olfactory epithelium (hNPCs-OE) have been emphasized as potential biomarker sources. This study measured soluble factors in these cells in Major Depressive Disorder (MDD), Borderline Personality Disorder (BPD), and healthy controls (HC). Methods: We assessed thirty-five participants divided into MDD (n=14), BPD (n=14), and HC (n=7). MDD was assessed using the Hamilton Depression Rating Scale. BPD was evaluated using the DSM-5 criteria and the Structured Clinical Interview for Personality Disorders. We isolated hNPCs-OE, collected intracellular proteins and conditioned medium, and quantified markers and soluble factors, including Interleukin-6, interleukin-8, and others. Analysis was conducted using one-way ANOVA or Kruskal-Wallis test and linear regression. Results: We found that hNPCs-OE of MDD and BPD decreased Sox2 and laminin receptor-67 kDa levels. MASH-1 decreased in BPD, while tubulin beta-III decreased in MDD compared to controls and BPD. Also, we found significant differences in IL-6, IL-8, MCP-1, and thrombospondin-1 levels between controls and MDD, or BPD, but not between MDD and BPD. Conclusions: Altered protein markers are evident in the nhNPCs-OE in MDD and BPD patients. These cells also secrete higher concentrations of inflammatory cytokines than HC cells. The results suggest the potential utility of hNPCs-OE as an in vitro model for researching biological protein markers in psychiatric disorders. However, more extensive validation studies are needed to confirm their effectiveness and specificity in neuropsychiatric disorders.

Corrigendum: Convergence between the dimensional PD models of ICD-11 and DSM-5: a meta-analytic approach.

[This corrects the article DOI: 10.3389/fpsyt.2023.1325583.].

Perfectionism as a Paradoxical Factor in Sport and Exercise Performance: An Umbrella Review.

Objective: Traditionally, perfectionism has been regarded as a commendable trait in the realm of sports and exercise. However, recent research has uncovered a paradoxical aspect of perfectionism in these domains. This umbrella review seeks to offer a comprehensive overview of the intricate role that perfectionism plays in sport and exercise performance. Method : As an umbrella review, we systematically explored three widely used scientific databases-PubMed, Scopus, and ISI-to identify relevant systematic reviewes and meta-analyses investigating the relationship between perfectionism and sports performance. Results: After careful evaluation, eight studies met our inclusion criteria and were included in the study. These eight eligible studies comprised five systematic reviews and three systematic review and meta-analysis publications. These publications have explored the correlation between perfectionism and sports performance in teenager and adult populations, as well as professional and amateur athletes. Most of the original articles included in these studies had a cross-sectional design and some of them were longitudinal research. All reviewed articles reported a significant correlation between perfectionism and sports performance, regardless of gender and age. In general, the main consensus of these studies is a moderate to high positive correlation between perfectionistic strivings and sports performance, as well as a moderate to high negative correlation between perfectionistic concerns and sports performance. Conclusion: In summary, perfectionism exhibits both positive and negative effects on athlete outcomes. Maladaptive perfectionism is linked to adverse consequences, while adaptive perfectionism can yield positive effects. Promisingly, psychological interventions such as mindfulness-based approaches and ACT-based interventions show potential in reducing perfectionism and enhancing athlete outcomes. Future research should delve deeper into the intricate relationship between perfectionism and athlete performance and continue to devise interventions that counteract the detrimental effects of perfectionistic tendencies.

Trajectories of positive attributes from childhood to young adulthood and its associations with threat and deprivation.

OBJECTIVE: The aims of this study are to investigate the trajectory of positive attributes from childhood to early adulthood and to explore how those trajectories can be modified by two domains of childhood adversity - threat and deprivation. METHODS: A large prospective school-based community cohort of youths (n=2,511, 6-14 years of age, 45% female) was assessed and followed up for 3 years (80% retention) and 6 years (71% retention). Positive attributes were assessed by the Youth Strength Inventory (YSI). Childhood exposure to threat and deprivation were assessed by a composite measure using multiple indicators. RESULTS: Trajectories of YSI scores were non-linear and distinct for boys and girls. While boys presented a more stable trajectory; girls showed higher levels of positive attributes early in life that decrease over time around adolescence. Both exposure to threat and deprivation presented negative linear association with YSI over time. Furthermore, we found interactions between developmental stage and both adversity domains meaning that the effects of exposure to adversity were stronger at earlier developmental stages and almost non-significant closer to early adulthood. CONCLUSION: Our findings provide new evidence on trajectories of positive attributes in youth and reveal and how experiences of adversity in early life impact not only mental disorder but also positive aspects of mental health.

Personality dimensions, resilience, and depression during COVID-19 pandemic: A one-year longitudinal study.

BACKGROUND: The onset of the COVID-19 pandemic has brought to light a significant surge in depression across diverse populations. While a considerable body of research has linked this upswing to lockdowns and restrictive measures, it is crucial to recognize that lockdowns alone cannot fully elucidate the observed increase in mental health disorders, given the vast array of individual psychological responses. OBJECTIVE: This study aims to test e whether personality dimensions (Extroversion, Neuroticism, and Psychoticism) and resilience play a role in shielding individuals from developing depression during the COVID-19 pandemic, as observed in a sample of Brazilian adults. METHODS: This research employed a one-year longitudinal naturalistic study involving the general population. It utilized a web-based questionnaire administered in three waves during the COVID-19 pandemic: April 2020, September 2020, and May 2021. The research protocol contains the Patient Health Questionnaire-9 - PHQ-9, the Connor-Davidson Resilience Scale - CD-RISC, and the Eysenck Personality Questionnaire Revised-Abbreviated - EPQR-A. RESULTS: Our study encompassed 455 participants, of which 35.6 % met the criteria for depression in the first wave, and this figure decreased to 18.5 % in the second and third waves (p = 0.001). Resilience levels in the non-depressed group (consistently exhibited higher means across all three waves when compared to the depressed group (first wave: x¯= 27.98; second wave: x¯= 37.26; third wave: x¯= 36.67; p = 0.001). Furthermore, resilience exhibited an overall protective effect against depression in all waves (PR = 0.93, p = 0.000). Neuroticism and Psychoticism emerged as predictors of depression across all waves (PR = 1.346; p = 0.0001 and PR = 1.157; p = 0.030), while the Extroversion dimension showed no significant effect. CONCLUSION: The decline in depression rates during the first year of the COVID-19 pandemic was influenced by levels of resilience, which acted as a protective factor against the development of depressive symptoms. Notably, Neuroticism and Psychoticism predicted the risk of developing depressive symptoms. Implications for practical intervention in future crisis scenarios suggest the need for public health policy programs featuring personalized interventions that prioritize enhancing resilience.

A Network Analysis Approach to Understanding Centrality and Overlap of 21 Dark Triad Items in Adults of 10 Countries.

Background: Previous research has suggested that manipulation and callousness are central to Dark Triad traits, but it has not identified which specific manifestations are expressed across various countries. Objective: This study aimed to identify the core and overlapping manifestations of Dark Triad traits across 10 countries. Methods: We used the Short Dark Triad (SD3) scale and assessed a sample of 8093 participants (59.7% women, M(age) = 32.68 years). For graphical representation, the spinglass algorithm was applied to understand the cluster distribution among Machiavellianism, psychopathy, and subclinical narcissism traits. Centrality indices were used to identify the most influential items, and the clique-percolation algorithm was employed to detect shared attributes among multiple Dark Triad items. Results: Straightforward SD3-21 items demonstrated better interpretability as aversive traits within the broader system. Items with higher centrality values were those related to short-term verbal manipulation from the psychopathy domain, clever manipulation, strategic revenge-seeking from Machiavellianism, and narcissistic motivations for connecting with significant individuals. The most predicted items were linked to planned revenge, using information against others from Machiavellianism, short-term psychopathic verbal manipulation, and narcissistic belief of specialness based on external validation. Items like short-term verbal manipulation had overlaps with both psychopathy and narcissism clusters, while clever manipulation overlapped with Machiavellianism and psychopathy. Conclusion: This cross-cultural study highlights the central role of verbal manipulation within the Dark Triad traits, along with identifying overlapping items among traits measured using straightforward SD3 scale items. In line with our findings, future research that incorporates a wide range of cultural contexts is encouraged to establish the consistency of these findings with the SD3 Scale or alternative measures.

Efficacy of Dialectical Behavior Therapy in the Treatment of Borderline Personality Disorder: A Systematic Review of Randomized Controlled Trials.

Objective: Borderline personality disorder (BPD) is a serious public health problem. Dialectical Behavior Therapy (DBT) is a program that has provided encouraging results for its treatment. However, scientific evidence about its efficacy is scarce. Therefore, we aimed to describe the scientific production on the components of the DBT program and its therapeutic efficacy in the treatment of people with BPD. Method : A systematic review with relevant keywords was conducted based on studies available in Scopus, Web of Science, and PubMed until June 2023, including studies in English, research on therapeutic intervention, studies with a randomized controlled trial (RCT) design that included people with the diagnosis of BPD. Results: We found 18 RCTs, most of which supported the effectiveness of DBT for BPD. There were a total of 1,755 participants in these studies, most of whom were women. These studies looked for treating self-injurious behaviors, suicidal thoughts or ideations, number of visits to emergency services, and frequency of hospital admissions. Most studies revealed that both short-term DBT and standard DBT improved suicidality in BPD patients with small or moderate effect sizes, lasting up to 24 months after the treatment period. Furthermore, these studies showed that DBT can significantly improve general psychopathology and depressive symptoms in patients with BPD. Improvement of compliance, impulsivity, mood instability, as well as reduction in hospitalization rate are other findings observed in the trials following DBT. Conclusion: Although DBT shows efficacy in the treatment of BPD, heterogeneity in the methodologies employed is highlighted. Therefore, it is necessary to design studies from a homogeneous theoretical and methodological framework.

[Autistic spectrum disorders, attention deficit disorders, hyperactivity and emotional dysregulation: masking and approach]. / Trastornos del espectro autista, trastornos por déficit de atención hiperactividad y desregulación emocional: enmascaramiento y abordaje.

Autism Spectrum Disorders (ASD) and Attention Deficit Hyperactivity Disorders (ADHD) are Neurodevelopmental Disorders (ND) that frequently coexist together and have etiological, biological, and clinical factors in common. The comorbidity of both neurodevelopmental disorders is associated with a delay or lack of ASD diagnosis and the development of perceptual, emotional, cognitive and behavioral alterations related to Emotional Dysregulation (ED) is common. When both TN are not diagnosed in childhood, they frequently receive wrong diagnoses at later ages, the most frequent being Borderline Personality Disorder (BPD). The clinical presentation of the association of ASD and ADHD, the association with ED, differentiation of BPD, and evaluation and intervention are here analyzed. The comorbidity ASD, ADHD, ED is a more severe disorder associated to polypharmacology and hospital admissions.

Los Trastornos del Espectro Autista (TEA) y los Trastornos por Déficit de Atención Hiperactividad (TDAH) son Trastornos del Neurodesarrollo (TN) que coexisten frecuentemente y que tienen factores etiológicos, biológicos, clínicos en común. La comorbilidad de ambos TN se asocia a un retraso en el diagnóstico del TEA o un diagnóstico que nunca llegan a recibir y es frecuente el desarrollo de alteraciones perceptivas, emocionales, cognitivas y conductuales relacionadas con la Desregulación Emocional (DE). Cuando ambos TN no son diagnosticados en infancia, frecuentemente reciben diagnósticos equivocados en edades más tardías, siendo el más frecuente el Trastorno Límite de Personalidad (TLP). Se analiza la presentación clínica de la asociación del TEA y el TDAH, la asociación con DE, diferenciación del TLP y evaluación e intervención. La comorbilidad TEA, TDAH, DE, es un trastorno más severo, asociado a poli farmacología y a ingresos hospitalarios.

Trait sensitivity to stress and cognitive bias processes in fish: A brief overview.

Like other animals, fish have unique personalities that can affect their cognition and responses to environmental stressors. These individual personality differences are often referred to as "behavioural syndromes" or "stress coping styles" and can include personality traits such as boldness, shyness, aggression, exploration, locomotor activity, and sociability. For example, bolder or proactive fish may be more likely to take risks and present lower hypothalamo-pituitary-adrenal/interrenal axis reactivity as compared to shy or reactive individuals. Likewise, learning and memory differ between fish personalities. Reactive or shy individuals tend to have faster learning and better association recall with aversive stimuli, while proactive or bold individuals tend to learn more quickly when presented with appetitive incentives. However, the influence of personality on cognitive processes other than cognitive achievement in fish has been scarcely explored. Cognitive bias tests have been employed to investigate the interplay between emotion and cognition in both humans and animals. Fish present cognitive bias processes (CBP) in which fish's interpretation of stimuli could be influenced by its current emotional state and open to environmental modulation. However, no study in fish has explored whether CBP, like in other species, can be interpreted as long-lasting traits and whether other individual characteristics may explain its variation. We hold the perspective that CBP could serve as a vulnerability factor for the onset, persistence, and recurrence of stress-related disorders. Therefore, studying fish's CBP as a state or trait and its interactions with individual variations may be valuable in future efforts to enhance our understanding of anxiety and stress neurobiology in animal models and humans.

Trastornos somatomorfos y rasgos de personalidad en pacientes hospitalizados por lumbalgia crónica en El Salvador / Somatoform Disorders and Personality Traits in Hospitalized Patients with Chronic Back Pain in El Salvador

Introducción. El trastorno somatomorfo se caracteriza por la presentación de múltiples síntomas físicos que no pueden ser atribuidos a otra enfermedad física, mental o al uso de sustancias, teniendo como comorbilidad más prevalente a los trastornos de personalidad. Objetivo. Determinar la frecuencia de trastorno somatomorfo, sus características principales y diferentes rasgos de personalidad entre pacientes con lumbalgia crónica. Metodología. Estudio descriptivo transversal realizado con pacientes ingresados en el servicio de neurocirugía del Hospital General del Instituto Salvadoreño del Seguro Social. La recolección de datos se realizó a través de la escala Screening for Somatoform Symptoms 2 y la escala InternationalPersonality Disorder Examination. Las variables cualitativas fueron analizadas a través de frecuencias absolutas. Las variables cuantitativas fueron analizadas a través de medidas de tendencia central y de dispersión. Los análisis estadísticos fueron realizados en el programa Statistical Package for the Social Sicience, versión 26. Resultados. Se incluyeron 60 pacientes, 40 de ellos mujeres, 31 entre los 41 y 60 años. Veintiocho pacientes presentaron ocho o más síntomas, excluyéndose dolor lumbar. Cuarenta y cinco pacientes reportaron sintomatología por más de un año. Cincuenta y tres pacientes presentaron trastorno somatomorfo. Los trastornos de personalidad más frecuentes fueron obsesivo-compulsivos (31), límites (21) y paranoides (21). Conclusión. Los pacientes con dolor lumbar crónico que requieren ingreso hospitalario presentan una alta frecuencia de trastornos somatomorfos, con dolor en piernas o brazos como síntoma principal; además, estos pacientes se caracterizan por presentar en su mayoría rasgos de personalidad obsesivo-compulsivos.

Introduction. The somatoform symptoms disorder is characterized by multiple psychical symptoms that can't be attributed to another physical or mental health diagnosis or drug abuse, having personality disorders as the most common comorbidity. Objective. To determine the frequency of somatoform disorders, it's most important characteristics and different personality traits among patients with chronic back pain. Methodology. Cross-sectional descriptive study carried out with patients admitted to the neurosurgery department of the General Hospital of the Salvadoran Social Security Institute. Data collection was carried out using the Screening for Somatoform Symptoms 2 scale and the International Personality Disorder Examination scale. The qualitative variables were analyzed through absolute frequencies. The quantitative variables were analyzed through measures of central tendency and dispersion. The statistical analyzes were carried out using the Statistical Package for the Social Sciences version 26. Results. The study included 60 patients, 40 of them women, 31 between 41 and 60 years old. Twenty-eight patients presented eight or more symptoms, excluding low back pain. Forty-five patients reported symptoms for more than one year. Fifty-three patients presented somatoform disorder. The most frequent personality disorders were obsessive-compulsive (31), borderline (21) and paranoid (21). Conclusion. Patients with chronic lower back pain who require hospital admission have a high frequency of somatoform disorders, with the main symptom being pain in the legs or arms; furthermore, these patients are characterized by mostly presenting obsessive-compulsive personality traits

Bariatric surgery: behavioral patterns and personality disorders in the preoperative period

Introduction: Bariatric surgery has become an increasingly common procedure, especially for patients with morbid obesity who have obtained unsatisfactory results from conventional treatments. Objective: To evaluate the occurrence of behavioral patterns and personality disorders in patients in the preoperative period of bariatric surgery. Materials and methods: Cross-sectional study carried out with 146 patients from a medium-sized clinic, a reference in the execution of bariatric surgeries in the Midwest region of Minas Gerais, Brazil. Data collection was performed using the psychological instrument entitled Factorial Personality Battery. Descriptive analysis and data association were performed. Results: Half of the participants presented high or very high scores for greater propensity to develop depression and anxiety, showing a close relationship with personality disorders, especially with behavioral patterns of effort and dedication. Discussion: The patterns of effort and dedication behavior are protective factors in the postoperative period, taking into account the adaptations and new habits necessary for a good recovery and maintenance of weight loss. Conclusions: The dysfunctional patterns of behavior that stood out most are related to greater difficulty in perceiving the positive side and ease in perceiving the negative side, leading to a more intense experience of suffering, in addition to difficulty in making decisions and facing routine challenges. Screening behavioral patterns and personality disorders preoperatively is necessary for adequate patient monitoring and successful bariatric surgery.