Predictive coding in autism spectrum disorder and attention deficit hyperactivity disorder.

Predictive coding has been proposed as a framework to understand neural processes in neuropsychiatric disorders. We used this approach to describe mechanisms responsible for attentional abnormalities in autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD). We monitored brain dynamics of 59 children (8-15 yr old) who had ASD or ADHD or who were control participants via high-density electroencephalography. We performed analysis at the scalp and source-space levels while participants listened to standard and deviant tone sequences. Through task instructions, we manipulated top-down expectation by presenting expected and unexpected deviant sequences. Children with ASD showed reduced superior frontal cortex (FC) responses to unexpected events but increased dorsolateral prefrontal cortex (PFC) activation to expected events. In contrast, children with ADHD exhibited reduced cortical responses in superior FC to expected events but strong PFC activation to unexpected events. Moreover, neural abnormalities were associated with specific control mechanisms, namely, inhibitory control in ASD and set-shifting in ADHD. Based on the predictive coding account, top-down expectation abnormalities could be attributed to a disproportionate reliance (precision) allocated to prior beliefs in ASD and to sensory input in ADHD.

[The importance of early detection and early intervention for children with autism spectrum conditions]. / La importancia de la detección precoz y de la intervención temprana en niños con condiciones del espectro autista.

Autism spectrum disorders are a group of neurodevelopmental disorders characterized by social communication difficulties and restrictive and repetitive patterns of behavior, interests and activities. In Argentina in 2013, legislation introduced both at national and provincial levels generated vigorous debate in relation to early detection of autism spectrum disorders, diagnosis or "pathologization" of children, and early intervention for these children. This paper provides evidence supporting the importance of systematic screening for autism spectrum disorders in toddlers, the usefulness of the new autism spectrum disorder classification provided by DSM-5, the desirability of timely and comprehensive diagnostic assessments by interdisciplinary teams specialized in development, and the critical importance of early intervention. Early intervention takes advantage of the neuroplasticity present in early life and positively impacts prognosis of children and family quality of life. Finally, the role of parent-mediated interventions in the treatment of children with autism spectrum disorders is mentioned.

Age of autism diagnosis in Latin American and Caribbean countries.

LAY ABSTRACT: An earlier diagnosis of autism spectrum disorder might lead to earlier intervention. However, people living in Latin American and Caribbean countries do not have much knowledge about autism spectrum disorder symptoms. It has been suggested that the older a child is when diagnosed, the fewer opportunities he or she will have to receive services. We asked 2520 caregivers of autistic children in six different Latin America and Caribbean Countries, the child's age when they noticed some developmental delays and their child's age when they received their first autism spectrum disorder diagnosis. Results indicate that, on average, caregivers were concerned about their child's development by 22 months of age; however, the diagnosis was received when the child was 46 months of age. In addition, older children with better language abilities and public health coverage (opposed to private health coverage) were diagnosed later. On the contrary, children with other medical problems and more severe behaviors received an earlier diagnosis. In our study, children were diagnosed around the time they entered formal schooling, delaying the access to early intervention programs. In summary, the characteristics of the autistic person and the type of health coverage influence the age of diagnosis in children living in Latin America and Caribbean Countries.

Understanding Emotional Outbursts: A Cross-Cultural Study in Latin American Children with Autism Spectrum Disorder.

OBJECTIVES: One of the behavioral problems strongly associated with emotional dysregulation (ED) in ASD is emotional outbursts (EOs) characterized by a pattern of challenging behavior that varies across individuals and across time. Cultural factors can modulate the expression of EOs. This study aimed to characterize the profile of emotional outbursts (EOs) in children with autism spectrum disorder (ASD) across various countries in Latin America and to identify clinical, emotional, and contextual factors that contribute to the onset and frequency of EOs within this diverse sample. METHODS: A cross-sectional and cross-cultural study was conducted between 2023 and 2024 comprising samples from five countries in the Latin American Network for Autism-REAL: Argentina, Brazil, Chile, Uruguay, and the Dominican Republic. We studied 689 children with ASD (age x = 8.7 ± 2.6 years) using the Emotional Outburst Questionnaire (EOQ). RESULTS: We identified different types of EO among children with ASD in our sample. The most frequent was the 'behavioral indicators of emotion' (52.0%) followed by 'increased motor activity' (28.3%), 'non-speech vocalizations', (27.6%), 'mild verbal aggression' (23.8%), and 'avoidance' (21.5%). Children in a bad mood or having a bad day or experiencing irritability were the most significant factors that increased the likelihood of EOs. CONCLUSIONS: Our results revealed that irritability is an important trigger for EOs and should not be disregarded or underestimated when monitoring the mental health of children with ASD.

Where I am from matters: factors influencing behavioral and emotional changes in autistic individuals during COVID-19 in Latin America.

Background: The COVID-19 pandemic brought an increased incidence of disease and mortality in the world at large, making it a particularly salient and stressful life event. For those individuals residing in Latin America, the pandemic was met with fragmented healthcare systems, economic downturn, and sociopolitical crisis which puts autistic individuals at risk for more detrimental outcomes. Behavioral and emotional challenges experienced by autistic individuals at the beginning of the pandemic could later develop into more severe symptomatology as the pandemic progresses. The present study aimed to explore changes in dysregulated (overt and internalizing) behaviors and preoccupation with getting sick during the COVID-19 pandemic among autistic children in 7 Latin American countries. Method: Sample consisted of 1,743 caregivers, residing in: Argentina (n = 677, 38.8%) Brazil (n = 156, 9%), Chile (n = 251, 14.4%), Dominican Republic (n = 171, 9.8%), Mexico (n = 126, 7.2%), Uruguay (n = 259, 14.9%) and Venezuela (n = 103, 5.9%). The majority of caregivers who completed the questionnaire were mothers (85.1%), and most had a male autistic child (81.6%). A series of independent sample t-tests were conducted to assess country differences in dysregulated behaviors and preoccupation with getting sick. Linear regressions were conducted to identify which demographic characteristics and micro-level contextual factors predicted dysregulated overt behaviors and psychological changes. Results: Contextual factors, such as country of residence, were related to preoccupation with getting sick and dysregulated behavior. Particularly, residing in Mexico and Brazil were related to changes in preoccupation with getting sick and mental health concerns. Coexistence predicted dysregulated internalizing behaviors, while being older significantly predicted preoccupation with getting sick. Increased screen time only predicted anxiety. Conclusion: Our findings highlight differences and predictions of behavioral challenges and psychological changes based on certain contextual factors and individual characteristics while experiencing severe life stressors such as a worldwide pandemic. This knowledge could help inform policies and decrees aimed at protecting those most vulnerable due to their increased difficulty adapting to change.

Age of diagnosis, service access, and rights of autistic individuals in Argentina: Caregivers reports of changes and similarities across time.

Background: Many countries have developed health initiatives to protect those with disabilities and developmental concerns in the past few years. However, the needs of autistic individuals are still short of being fulfilled. Partially due to limited research expenditure, which would allow bridging the gap between evidence and practice, the long time it takes to implement passed laws, and the limited operationalization of inclusive policies. Objective: To quantitatively examine changes in the child's age at the time of caregiver's first developmental concerns and age of diagnosis of their autistic child across 5 years. Also, to address challenges experienced by caregivers (e.g., reported service barriers) and the work still needing to be done in Argentina based on caregivers' reports of their priorities (e.g., ensuring their child receives better services). Methods: Two independent samples of caregivers of autistic individuals were surveyed by the Red Espectro Autista Latinoamerica (REAL) in 2015 (n = 763) and the World Health Organization (WHO) in 2020 (n = 422). Similar items in both surveys were compared through descriptive inferential analysis and chi-square tests for categorical variables. Results: Compared to the 2015 sample, for the 2020 sample, more caregivers reported an earlier age of first concerns and an earlier age of a professional diagnosis. In the 2020 sample, more children diagnosed before the age of three had a doctor or a teacher noticing the first developmental concern. Also, in this sample, fewer caregivers reported service barriers (e.g., limited availability, waitlist, costs, etc.) and a need for better social support and better health services. However, rates of caregivers indicating a need for more rights for autistic individuals and greater protection of existing rights increased. There was no change in the reported rate of family members who stopped working to care for the autistic individual. For both samples, there was statistically significant differences in individual (physician, teacher, caregiver) noticing first developmental concern and the age of diagnosis, with the majority having a caregiver noticing the first concern. Conclusion: The 5 years that separate both samples show an improvement in developmental concerns being noticed, a decrease in age of diagnosis, and an improvement in several service areas such as community awareness. Also, caregivers reported fewer barriers to service accessibility, thus suggesting a positive impact stemming from changes in public policies, non-profit organizations' work through awareness campaigns, and advocates' strives toward greater awareness. Nonetheless, a similar proportion of family members reported ceasing working to care for autistic individuals and perceived that the fundamental rights of their autistic children needed to be protected. These results imply that despite better care pathways in Argentina, there are still gaps when attempting to meet the needs of autistic individuals and their families. The present study provides a meaningful understanding of existing gaps and help exemplify the perceived improvements when non-profit agencies and advocates promote increased rights and community awareness in addition to the established laws focusing on ASD.

Profile of Service Use and Barriers to Access to Care among Brazilian Children and Adolescents with Autism Spectrum Disorders.

Delayed diagnosis and a lack of adequate care for people with autism spectrum disorder (ASD) are related to worse outcomes and quality of life. This study aimed to identify the profile of service use, barriers to access care, and factors related to those barriers in Brazilian families with children with ASD. A total of 927 families with children with ASD (3-17 years) from five Brazilian regions completed an online version of the Caregivers Needs Survey. Results showed that the most used services were behavioral interventions and pharmacotherapy, while the most used professionals were neurologists, nutritionists, speech therapists, psychiatrists, psychologists, and pediatricians. The main barriers included waiting lists, costs, and the absence of services or treatment. Service use varied according to age, the region of residence, type of health care system used, and the parents/caregivers' education. Access to behavioral interventions was more frequent among users of the private system/health insurance and families whose caregivers had higher education. The absence of specialized services/treatments was less frequent among residents of state capitals and families whose caregivers had higher levels of education. This study highlights how families with children/adolescents with ASD in Brazil face significant barriers to access care related to sociodemographic factors.

[Survey for Caregivers of People with Autism Spectrum in Chile: Access to Health and Education Services, Satisfaction, Quality of Life And Stigma]. / Encuesta para Cuidadores de Personas del Espectro Autista en Chile. Acceso a Servicios de Salud y Educación, Satisfacción, Calidad de Vida y Estigma.

INTRODUCTION: People on the Autism Spectrum (AS) face multiple health, education, social, and economic pro blems. There is limited available information in Chile. OBJECTIVE: To describe the access and satisfac tion with health and education services, family and economic impact, stigma, and quality of life of people with AS and their families in Chile. SUBJECTS AND METHOD: Parents/caregivers of AS persons completed the Caregiver Needs Survey, developed by Autism Speaks, which includes demographic information, characteristics of AS persons (previously published), use of health and education servi ces, parents/caregivers' perceptions of satisfaction, impact, stigma, and quality of life. RESULTS: 291 caregivers (86% mothers) of 291 AS persons participated, 89% were male, aged 1-40 years (X:10.4 SD:6.1). Limited and unspecific access to health services is reported. 77% are regularly attending a standard or special school system. Families pay for over 60% of therapies/medical care and over 40% of specific educational support, and 25% report difficulties in accessing services. The family income is affected by resignation (35%) or reduced working hours (46%). Stigma is associated with possi ble discrimination and feelings of helplessness. The main priorities mentioned for a better quality of life are support for inclusive schooling, better adjustment at home, and improved socialization. CONCLUSIONS: This survey provides relevant information about the needs, barriers, and challenges of AS people in Chile and highlights the difficulties in accessing health services and the severe impact on family income. Feelings of stigma, discrimination, and helplessness are reported. Collaborative strategies are needed to improve the quality and access to services and to reduce the economic and mental health burden on the family.

Perceived Stigma and Barriers to Accessing Services: Experience of Caregivers of Autistic Children Residing in Latin America.

BACKGROUND: Relationship of perceived stigma and barrier to service access among Latino populations with autism in cross-cultural settings has not been fully explored. AIM: The present study explored the relationship between difficulty accessing services and perceived stigma among caregivers of autistic children in Latin America. Additionally, explore contextual factors that better explain the perception of stigma when accessing services. METHODS AND PROCEDURE: Approximately 2500 caregivers from six Latin American countries completed an online survey. Descriptive inferential analysis and a pointbiserial correlation were conducted to understand direct relationship between difficulty accessing services and perceived stigma and to test their relationship. Added contextual factors contributing to this relationship were examined through a binary logistic regression. OUTCOMES AND RESULTS: Barriers to accessing services predicted stigma. Contextual factors such as country of residence, frustration experienced by caregivers, gender of autistic child and challenging behaviours had higher odds of experiencing some form of perceived stigma. CONCLUSIONS AND IMPLICATIONS: These results suggest experiences with stigma to be heavily influenced by environmental factors such cultural differences which in combination with contextual factors could further increase the likelihood of perceiving stigma. When observing stigma within a social-cognitive approach, it is possible that a strong-held adherence to cultural norms, in addition to negative experiences (e.g., frustration) when accessing services, could be influencing caregivers perceived stigma.

Use of allied-health services and medication among adults with ASD in Latin America.

ASD is a neurodevelopmental disorder that affects people across the entire lifespan, yet most of the research identifying the health and medical needs for autistic individuals have been among minors. As individuals with ASD transition to emerging adulthood, the services, already limited, become less available. This study aimed to identify the use of services for Latin American adults on the spectrum. We surveyed 295 caregivers of adults with ASD from six Latin American countries. Comparing the results for all the possible services observed in this study, the adults in our sample were primarily underserved: 84.4%-95.9% were receiving zero hours per week, 3.7%-12.9% 1%-10 h, 0%-1.7% 11-20, and only 0%-1% above 20 h of services. Almost half of the sample used medication, and neurologists were the most consulted health providers. Next to inexistent health care usage in Latin American adults with ASD highlights socioeconomic and health disparities in service provision for ASD in the region. The lack of services places adults with ASD in Latin America at a higher risk of worse symptom severity than autistic adults from regions with broader access to services. LAY SUMMARY: This study aimed to identify the quantity of services received by adults with autism in Latin America. Most of our sample was not receiving health services yet almost half had access to medication. This could mean that adults with autism in Latin America are at higher risk for poorer health.

What Is Important in Measuring Quality of Life? Reflections by Autistic Adults in Four Countries.

Relevant and valid measurement is crucial in determining whether interventions and supports have improved the quality of life (QoL) of autistic people. However, it is possible that researchers' and services' use of general population QoL tools may overlook issues of specific importance. To advance methodology, we conducted a preliminary exploration of the need and basis for cross-cultural development of additional autism-specific QoL questions. Nine consultation groups with autistic adults (n = 38) were held in Argentina, Australia, Singapore, and the United Kingdom to examine the items of the World Health Organization QoL questionnaire (WHOQOL-BREF) and the WHOQOL Disabilities add-on module. Each group discussion was transcribed and analyzed thematically to identify missing issues and nuances of particular significance to autistic people. Themes seen as important and particularly relevant to QoL of autistic people included a positive autistic identity, other people's lack of understanding of autism, sensory issues, and autistic people's contributions to society. There were notable similarities across sites indicating that creation of cross-cultural autism-specific items is likely to be possible; the themes identified could inform the focus of items for measurement of QoL. This project represents an initial step toward fuller international consultation, and subsequent development of an autism-specific module for addition to the core WHOQOL model. Lay summary: Why was this project done?: Quality of life (QoL) refers to how satisfied a person is with their life now, taking into account their experiences and the conditions in which they live. There are questionnaires for the general public to rate their QoL, but these may ask questions in ways that are not important or relevant for autistic people; for example, some autistic people have few or no friends, but are fine with this. Also questionnaires miss out topics such as sensory overload that impact on QoL for autistic people.What was the purpose?: We wanted to try to understand whether the questions in the World Health Organization Questionnaire (WHOQOL-BREF for short), and in the optional add-on Disabilities questionnaire, were important and relevant to autistic people from different countries and cultures. We also wanted to find out whether autistic people thought there were other important topics missing from these questionnaires.What did the researchers do?: We held 9 consultation groups about the WHO questionnaire items, with 38 autistic people in 4 countries: the United Kingdom, Singapore, Australia, and Argentina. Researchers, including members of the autism community, read the typed out discussions a number of times to find common themes, especially what was particularly relevant, or topics and experiences that were missing. First we analyzed the four United Kingdom groups, and then the other five groups.What did the researchers find?: Autistic people we consulted thought that most of the existing items of the WHOQOL questionnaires were important. From the discussions, we found 13 themes that were identified as particularly relevant to QoL, including being positive about one's autistic identity, other people's (lack of) knowledge of autism, sensory issues, mental health difficulties, the nature of friendships, and supporting other people as carers or volunteers.What do these findings add to what was already known?: The discussions from the four countries were quite similar. The items from the WHO QoL questionnaires were mostly viewed as important and relevant by autistic people, but a number of issues are missing, which seem different in autism and should be included in any improved measurement of QoL.What are potential weaknesses?: The project was a first step in consultation about measuring autistic adults' QoL, involving only four countries, and all except one group conducted in English. Only one group included people with intellectual disability.How will these findings help autistic adults now or in the future?: Having good QoL is central for everyone. Our consultation found that some topics highly relevant for autistic people are not included in QoL questionnaires developed for the general population. Our findings suggest that it will be both important and possible to develop a set of internationally appropriate items for autistic people to add to the existing WHO QoL questionnaires. This would allow researchers and health workers to measure accurately the QoL of autistic adults and to be able to judge how helpful supports and services are in improving QoL.

Challenges, priorities, barriers to care, and stigma in families of people with autism: Similarities and differences among six Latin American countries.

LAY ABSTRACT: Approximately 6 million individuals with autism spectrum disorder live in Latin America. In order to strengthen autism spectrum disorder research collaborations and awareness in the region, the Latin American Autism Spectrum Network (Red Espectro Autista Latinoamerica) was constituted in 2015, comprising researchers and clinicians from the following six countries: Brazil Argentina, Chile, Uruguay, Venezuela, and the Dominican Republic. This first multisite study from the Red Espectro Autista Latinoamerica network aims to describe the challenges and priorities to identify barriers to care and to map stigma among families of individuals with autism spectrum disorder living in Latin America. A total of 2942 caregivers from these six countries completed an online survey showing that the main priorities were greater community awareness and improvements in the educational system for individuals with autism spectrum disorder. In addition to that, the main barriers to care were related to lack of structure, mainly waiting lists (50.2%), high treatment costs (35.2%), and lack of specialized services (26.1%). Stigma experienced by families was frequent: one third reported feeling discriminated against and helpless for having a child with autism spectrum disorder. Also, 48.8% of the caregivers declared financial problems, 47.4% of them had to cut down work hours, and 35.5% had to leave their jobs because of their child's autism spectrum disorder. This is a pioneer study providing a description of the needs and challenges faced by families affected by autism spectrum disorder in Latin America, helping to build data-driven strategies at the national and regional levels.

Neural markers of social and monetary rewards in children with Attention-Deficit/Hyperactivity Disorder and Autism Spectrum Disorder.

Recent theories of decision making propose a shared value-related brain mechanism for encoding monetary and social rewards. We tested this model in children with Attention-Deficit/Hyperactivity Disorder (ADHD), children with Autism Spectrum Disorder (ASD) and control children. We monitored participants' brain dynamics using high density-electroencephalography while they played a monetary and social reward tasks. Control children exhibited a feedback Error-Related Negativity (fERN) modulation and Anterior Cingulate Cortex (ACC) source activation during both tasks. Remarkably, although cooperation resulted in greater losses for the participants, the betrayal options generated greater fERN responses. ADHD subjects exhibited an absence of fERN modulation and reduced ACC activation during both tasks. ASD subjects exhibited normal fERN modulation during monetary choices and inverted fERN/ACC responses in social options than did controls. These results suggest that in neurotypicals, monetary losses and observed disloyal social decisions induced similar activity in the brain value system. In ADHD children, difficulties in reward processing affected early brain signatures of monetary and social decisions. Conversely, ASD children showed intact neural markers of value-related monetary mechanisms, but no brain modulation by prosociality in the social task. These results offer insight into the typical and atypical developments of neural correlates of monetary and social reward processing.

Covid-19 y autismo: impacto en las personas con autismo y sus familias en Uruguay / Covid-19 and autism: impact on people with autism and their families in Uruguay

La pandemia de covid-19 y las medidas asociadas determinaron cambios profundos en los individuos con trastorno del espectro autista (TEA) y sus familias. Se busca explorar estos efectos a nivel de las emociones y comportamientos en esta población en Uruguay. Dentro de un estudio multicéntrico de ocho países de Latinoamérica, se utilizó la submuestra de Uruguay para analizar los cambios de los comportamientos exhibidos por los individuos con TEA sobre la base de género y edad. Entre los 269 cuidadores que completaron una encuesta anónima, el 43,9 % reportó mayores problemas de convivencia y el 75,4 % reportó retrocesos. El empeoramiento de los comportamientos externalizados fue mayor en el sexo masculino y de los internalizados, en los adolescentes de 13 a 18 años. Estos resultados deberían considerarse a la hora de tomar medidas que comprometen la continuidad educativa, apoyos terapéuticos y de asistencia a las familias con personas con TEA en Uruguay.

COVID-19 pandemic and its associated measures, determined pro-found changes in individuals with autism spectrum disorder (ASD) and their families. Authors explore consequences regarding emotions and behaviors in this population in Uruguay. Within a multicentric study of eight Latin American countries, changes in behaviors in individuals with ASD based on gender and age were analyzed in the Uruguayan sub-sample. Among the 269 caregivers who completed an anonymous survey, 43.9% reported greater problems in daily life and 75.4% reported setbacks. The worsening of externalizing behaviors was greater in males. The internalizing ones were higher in adolescents aged 13 to 18 years. These results should be considered when taking measures that compromise educational continuity, therapeutic supports and assistance to families with people with ASD in Uruguay.

Autism screening and diagnosis in low resource settings: Challenges and opportunities to enhance research and services worldwide.

Most research into the epidemiology, etiology, clinical manifestations, diagnosis and treatment of autism is based on studies in high income countries. Moreover, within high income countries, individuals of high socioeconomic status are disproportionately represented among participants in autism research. Corresponding disparities in access to autism screening, diagnosis, and treatment exist globally. One of the barriers perpetuating this imbalance is the high cost of proprietary tools for diagnosing autism and for delivering evidence-based therapies. Another barrier is the high cost of training of professionals and para-professionals to use the tools. Open-source and open access models provide a way to facilitate global collaboration and training. Using these models and technologies, the autism scientific community and clinicians worldwide should be able to work more effectively and efficiently than they have to date to address the global imbalance in autism knowledge and at the same time advance our understanding of autism and our ability to deliver cost-effective services to everyone in need.

Inter-individual cognitive variability in children with Asperger's syndrome.

Multiple studies have tried to establish the distinctive profile of individuals with Asperger's syndrome (AS). However, recent reports suggest that adults with AS feature heterogeneous cognitive profiles. The present study explores inter-individual variability in children with AS through group comparison and multiple case series analysis. All participants completed an extended battery including measures of fluid and crystallized intelligence, executive functions, theory of mind, and classical neuropsychological tests. Significant group differences were found in theory of mind and other domains related to global information processing. However, the AS group showed high inter-individual variability (both sub- and supra-normal performance) on most cognitive tasks. Furthermore, high fluid intelligence correlated with less general cognitive impairment, high cognitive flexibility, and speed of motor processing. In light of these findings, we propose that children with AS are characterized by a distinct, uneven pattern of cognitive strengths and weaknesses.

Impaired theory of mind but intact decision-making in Asperger syndrome: implications for the relationship between these cognitive domains.

The relationship between decision making and theory of mind (TOM) has been hardly investigated in patients with asperger syndrome (AS). Here, we show that the AS group (n=25) exhibited deficits on a complex TOM task, yet were unimpaired in a decision-making test. No association was found between these two domains.

Selective impairment of cognitive empathy for moral judgment in adults with high functioning autism.

Faced with a moral dilemma, conflict arises between a cognitive controlled response aimed at maximizing welfare, i.e. the utilitarian judgment, and an emotional aversion to harm, i.e. the deontological judgment. In the present study, we investigated moral judgment in adult individuals with high functioning autism/Asperger syndrome (HFA/AS), a clinical population characterized by impairments in prosocial emotions and social cognition. In Experiment 1, we compared the response patterns of HFA/AS participants and neurotypical controls to moral dilemmas with low and high emotional saliency. We found that HFA/AS participants more frequently delivered the utilitarian judgment. Their perception of appropriateness of moral transgression was similar to that of controls, but HFA/AS participants reported decreased levels of emotional reaction to the dilemma. In Experiment 2, we explored the way in which demographic, clinical and social cognition variables including emotional and cognitive aspects of empathy and theory of mind influenced moral judgment. We found that utilitarian HFA/AS participants showed a decreased ability to infer other people's thoughts and to understand their intentions, as measured both by performance on neuropsychological tests and through dispositional measures. We conclude that greater prevalence of utilitarianism in HFA/AS is associated with difficulties in specific aspects of social cognition.

Cognitive variability in adults with ADHD and AS: disentangling the roles of executive functions and social cognition.

Attention-deficit/hyperactivity disorder (ADHD) and Asperger's Syndrome (AS) share a heterogeneous cognitive profile. Studies assessing executive functions (EF) and social cognition in both groups have found preserved and impaired performances. These inconsistent findings would be partially explained by the cognitive variability reported in these disorders. First, the present study explored the inter-individual variability in EF and social cognition in both patient groups. Second, we compared differential characteristics and commonalities in the cognitive profiles of EF and social cognition between ADHD, AS and control adults. We assessed 22 patients with ADHD, 23 adults with AS and 21 matched typically developing subjects using different measures of EF (working memory, cognitive flexibility and multitasking) and social cognition (theory of mind and decision-making). Group comparisons and multiple case series analyses (MCSA) were conducted. The between-group comparisons showed an EF deficit in working memory in ADHD and a theory of mind (ToM) impairment in AS. The MCSA evidenced that, compared to controls, ADHD patients had a higher inter-individual variability in EF, while individuals with AS had a more heterogeneous profile in social cognition tasks compared to both groups. Finally, the AS and ADHD groups presented higher task-related variability compared to controls and shared a common heterogeneous profile in EF. This is the first study to compare variability in EF and social cognition profiles of ADHD and AS. We propose that heterogeneity in EF performance is a link between ADHD and AS which may explain the overlap of symptomatology between both diagnoses. In addition, patients with AS seem to show a unique heterogeneous profile in ToM which may explain the low probability of finding AS symptoms in patients with ADHD.