The identification of early warning signs is of great importance for identifying individuals at risk for mental disorders. Especially in the case of bipolar disorder, these research endeavours are imperative considering that the frequently delayed diagnoses and longer illness duration are associated with symptom exacerbation and lower recovery rates.

To multimodally investigate associations between hypomanic personality traits and altered social affect and social cognition to probe their role as early warning signs of bipolar disorder.

In a community sample (n = 140; 50.71% female), we investigated associations between hypomanic personality traits and both behavioural and neural activity measures of empathy and theory of mind (ToM) based on data from a functional magnetic resonance imaging paradigm.

Although analyses revealed no significant associations between behavioural or neural correlates of empathy and hypomanic personality traits, these traits were significantly associated with elevated ToM-related neural activity in the anterior rostral medial prefrontal cortex and anterior cingulate cortex. These neural activation differences were not accompanied by differences in behavioural ToM performance, suggesting more intense recruitment of task-relevant brain regions but unaffected behavioural outcomes.

Our findings indicate hypomanic personality traits to be positively associated with ToM-related neural activity but not with behavioural ToM performance. Prospectively, our study contributes to driving towards a more comprehensive and potentially neurobiologically grounded phenotype of bipolar disorder risk that contributes to a more differential understanding of risk and resilience mechanisms.

Adult patients with the genetic disease neurofibromatosis type 1 (NF1) frequently report social difficulties. To date, however, only two studies have explored whether these difficulties are caused by social cognition deficits, and these yielded contradictory data. The aim of the present study was to exhaustively assess social cognition abilities (emotion, theory of mind, moral reasoning, and social information processing) in adults with NF1, compared with a control group, and to explore links between social cognition and disease characteristics (mode of inheritance, severity, and visibility).

We administered a social cognition battery to 20 adults with NF1 (mean age = 26.5 years, SD = 7.4) and 20 healthy adults matched for sociodemographic variables.

Patients scored significantly lower than controls on emotion, theory of mind, moral reasoning, and social information processing tasks. No effects of disease characteristics were found.

These results appear to confirm that adults with NF1 have a social cognition weaknesses that could explain, at least in part, their social difficulties, although social abilities are not all impaired to the same extent. Regarding the impact of the disease characteristics, the patient sample seemed slightly insufficient for the power analyses performed. Thus, this exploratory study should form the basis of further research, with the objective of replicating these results with larger and more appropriately matched samples.

Previous studies have found deficits in imaginative elaboration and social inference to be associated with agenesis of the corpus callosum (ACC; Renteria-Vasquez et al., 2022; Turk et al., 2009). In the current study, Thematic Apperception Test (TAT) responses from a neurotypical control group and a group of individuals with ACC were used to further study the capacity for imaginative elaboration and story coherence.

Topic modeling was employed utilizing Latent Diritchlet Allocation to characterize the narrative responses to the pictures used in the TAT. A measure of the difference between models (perplexity) was used to compare the topics of the responses of individual participants to the common core model derived from the responses of the control group. Story coherence was tested using sentence-to-sentence Latent Semantic Analysis.

Group differences in perplexity were statistically significant overall, and for each card individually (p < .001). There were no differences between the groups in story coherence.

TAT narratives from persons with ACC were normally coherent, but more conventional (i.e., more similar to the core text) compared to those of neurotypical controls. Individuals with ACC can make conventional social inferences about socially ambiguous stimuli, but are restricted in their imaginative elaborations, resulting in less topical variability (lower perplexity values) compared to neurotypical controls.

Children with Down syndrome (DS) show marked differences in their early development when compared to typically developing (TD) peers. Major domains of challenge include intellectual abilities, executive functioning, and structural language. Children with DS have a unique profile of strengths and weaknesses that must be considered when comparing them to TD children, especially in terms of Theory of Mind (ToM). ToM encompasses the developmental milestones reached early in childhood when children develop the ability to conceptualize and understand others' thoughts, emotions, perspectives, and intentions. In TD children, these abilities typically begin to mature around 4-6 years of age, while in children with DS, delays are observed relative to chronological age expectations. Evidence shows that children with DS have impaired ToM abilities; however, these deficits might be more related to underlying delays in structural language, rather than a fundamental misunderstanding of social cues. The present study seeks to fill gaps in the literature by using a nonverbal assessment (The Penny Hiding Game; PHG) to evaluate a) ToM abilities in children with DS relative to younger TD peers of a similar mental ability level and b) relationships between ToM performance and structural language skills.

25 children with DS (60% F, M=11.39 years) and 25 TD children (40% F, M = 5.37, range = 3 to 7) participated. Participants' structural language abilities were briefly assessed using the Wechsler Individual Achievement Test- III Listening Comprehension Test (Oral Discourse Comprehension subcomponent). ToM was assessed using the PHG.

Univariate analysis of covariance was used to explore differences in ToM performance between groups while controlling for mental ability level. Children with DS (M= 2.79, SD= 2.23) performed significantly worse than TD peers (M= 4.28, SD= 1.87) on the ToM task (F(1, 60)= 4.5, p= .038). Linear regression was used to assess associations between ToM and structural language abilities. When both groups were lumped together, there was a modest association between ToM and Listening Comprehension scores (R2 = .12, F (1, 55) = 7.29, p= .009). However, when groups were considered separately, significant associations were not observed (p>.1).

The DS group showed markedly diminished ToM performance compared to TD controls, as expected based on the literature. However, data did not suggest a clear association between ToM and structural language skills. While an association was observed when groups were lumped, this relationship was likely driven by group differences in both ToM and structural language skills. Future research should examine the relationship between ToM performance, different aspects of language functioning, and the cooccurrence of autistic traits among children with DS in order to augment our understanding of linguistic and social correlates of ToM performance in young children with DS.

Multiple sclerosis (MS) is a persistent neuroinflammatory disease of the central nervous system that affects young adults, and is pathologically characterized by multiple and distributed focal white matter lesions, although they are characteristically located in periventricular regions. Cognitive impairment occurs in all clinical forms of the disease, with great variability and great impact on the quality of life of patients. Recent research indicates that in addition to cognitive and physical deficits, they also have deficits in social cognition, such as Theory of Mind. Although social cognition in patients with multiple sclerosis has begun to be studied in recent years, there is still little knowledge about its impact in the early stages of the disease, when the load of injuries is low and physical disability is not yet present. A series of 7 cases of patients diagnosed with MS in follow-up by the Multiple Sclerosis polyclinic of the Institute of Neurology of the Hospital de Clínicas is presented.

Clinically stable patients with no recent urges and no cognitive complaint were included. They were evaluated with the ACE-R screening test and Theory of Mind tests: Reading the mind in the eyes and Faux Pas tests.

All patients presented normal ACE results, without indicators of cognitive impairment and poor performance in the emotion reading test. In two cases, poor yields in Faux Pas were also found.

Social cognition has a great impact on quality of life, and there are indicators of involvement in early stages of the disease in which other typical cognitive deficits are not yet evident, and may constitute the first indicator of deterioration. The evaluation and early detection of deficits in social cognition could contribute to the treatment and quality of life of patients.

Theory of mind (ToM) deficits have been reported in patients with multiple sclerosis (pwMS). However, most studies have used pictures or written scenarios as stimuli without distinguishing between cognitive and affective ToM, and no studies have investigated older pwMS. The aims of this study were to determine the impact of MS and age on cognitive and affective ToM using a more ecological video-based task. We also aimed to investigate the relationships between ToM, cognition and emotion reading to understand the nature of ToM deficits in pwMS.

We recruited 13 young healthy controls (HC), 14 young pwMS, 14 elderly HC and 15 elderly pwMS. ToM was measured using an adaptation of the Conversations and Insinuations task (Ouellet et al. 2010). In this task, participants watch four 2-minutes videos of social interactions, which are interrupted by multiple choice questions about either the emotional state (affective ToM; 14 questions) or the intention (cognitive ToM; 14 questions) of the characters. They also underwent a short neuropsychological battery including cognitive tasks (Montreal Cognitive Assessment (MoCA), DKEFS Color-Word Interference Test) and an experimental multimodal emotion recognition task.

We found significant effects of group (pwMS < HC), age (older < younger) and condition (cognitive ToM < affective ToM) on the ToM task. Although no interaction effect was found, the elderly pwMS group showed the largest discrepancy between their cognitive and affective ToM, the cognitive subtask being significantly more affected. ToM significantly correlated with general cognition (MoCA) in all participants, while cognitive inhibition (DKEFS Color-Word Interference Test) correlated with ToM only in elderly pwMS. No significant correlation was observed between ToM and emotion reading.

This study highlights both cognitive and affective ToM deficits in pwMS, and particularly in cognitive ToM in elderly pwMS. These impairments could be underlied by cognitive and executive difficulties, but not by core social cognitive impairments, as observed in the correlation analyses. Future studies should investigate the relationships between ToM impairments and impairments in real-life empathy and social behavior in pwMS.