Autistic traits and adaptive coding of face identity

Although not a core symptom of the disorder, individuals with autism often exhibit selective impairments in their face processing abilities. Importantly, the reciprocal connection between autistic traits and face perception has rarely been examined within the typically developing population. In this study, university participants from the social sciences, physical sciences, and humanities completed a battery of measures that assessed face, object and emotion recognition abilities, general perceptual-cognitive style, and sub-clinical autistic traits (the Autism Quotient (AQ)). We employed separate hierarchical multiple regression analyses to evaluate which factors could predict face recognition scores and AQ scores. Gender, object recognition performance, and AQ scores predicted face recognition behaviour. Specifically, males, individuals with more autistic traits, and those with lower object recognition scores performed more poorly on the face recognition test. Conversely, university major, gender and face recognition performance reliably predicted AQ scores. Science majors, males, and individuals with poor face recognition skills showed more autistic-like traits. These results suggest that the broader autism phenotype is associated with lower face recognition abilities, even among typically developing individuals.

Somatosensory abnormalities are commonly recognized as diagnostic criteria in autism spectrum disorder (ASD), and may also exist in individuals with autistic traits. The present research included two studies to explore the painful and non-painful sensation and their cognitive-neurological mechanisms of individuals with autistic traits. Study 1 included 358 participants to assess the relationship between autistic traits and pain/non-pain sensitivities using questionnaires: the Autism Spectrum Quotient (AQ), the Pain Sensitivity Questionnaire, and the Highly Sensitive Person Scale, respectively. Study 1 found that autistic traits were positively correlated with non-pain sensitivity, but not associated with pain sensitivity. Study 2 recruited 1,167 participants whose autistic traits were assessed using the AQ. Subsequently, thirty-three participants who scored within the top 10% and bottom 10% on the AQ were selected into High-AQ and Low-AQ groups, respectively, to explore the cognitive-neural responses of individuals with autistic traits to both painful and non-painful stimuli with event-related potential (ERP) technology. Results of Study 2 showed that the High-AQ group showed higher intensity ratings, more negative emotional reactions, and larger N1 amplitudes than the Low-AQ group to the non-painful stimuli, but no difference of response to the painful stimuli was found between High-AQ and Low-AQ groups. These findings suggest that individuals with autistic traits may experience enhanced non-painful sensation but intact painful sensation.

Personality traits are linked to a variety of cognitive and socio-emotional factors, including lateralization patterns. Autism, prosopagnosia, and atypical cradling have been associated with altered lateralization and socio-emotional processing. This study explores how autism traits, cradling-side preferences, and face recognition abilities relate to individual personality differences. Three-hundred neurotypical adults (150 males) completed an online survey including the imaged cradling preference and three validated questionnaires: the Autism spectrum Quotient (AQ), Prosopagnosia Index-20 (PI-20), and the Big Five Personality Questionnaire (BFQ). Results showed a strong left-cradling bias (LCB) unaffected by sex, handedness, parental status, autism traits, or face recognition abilities. AQ negatively predicted Extraversion, Agreeableness, Emotional Stability, and Openness. LCB correlated with higher Agreeableness and moderated the negative association between AQ and Extraversion. These findings suggest a potential link between cradling preferences, autism traits, and personality, possibly reflecting reduced right-hemisphere specialization in emotional processing and social behaviour.

Background: subthreshold autistic traits can be found in students with normal cognitive abilities and may be associated with reduced empathy and impaired communication skills. The aim of this study was to assess the prevalence of subthreshold autistic traits in a sample of undergraduate medical students recruited from the Pavia University School of Medicine. We also determined the potential association between autistic traits and the students’ preferences on their future specialty choice. Methods: 135 undergraduate Italian medical students were asked to fill the Autism Spectrum Quotient (AQ), a short self-administered scale which measures autistic traits in individuals with normal cognitive abilities. Participants were divided into 7 groups according to their specialty. Intergroup differences were analyzed using one-way ANOVA and analysis of covariance (ANCOVA). Results: the sample showed low-to-mild autistic traits (mean AQ score 17.09±5.05, cut-off for high levels of autistic traits 32). There was a statistically significant difference (p=0.013) between surgery and psychiatry on the “Imagination” subscale of the AQ. Conclusions: to our knowledge, our study is the first to assess Italian students using the AQ. Our findings of a significant relation between AQ scores and the future choice of a particular medical specialty confirm that the professional attitudes may be interrelated with specific interpersonal skills as well as autistic traits.

This study aimed to assess the frequency of autistic traits in patients with migraine and to examine the effect of autistic traits on migraine-related disability, as well as anxiety and depressive symptoms, through the mediating factors of anxiety sensitivity and sensory sensitivity. Autism spectrum disorder (ASD) and migraine are two distinct clinical conditions marked by impaired sensory processing. Both conditions induce widespread alterations in the brain and exhibit symptoms associated with sensory sensitivity. Research examining the relationship between migraine and autistic traits is sparse. Moreover, the occurrence of autistic traits in patients with migraine and their effect on headache-related disability and psychiatric comorbidities has not been thoroughly investigated. This cross-sectional study included 169 patients with migraine and 112 healthy controls. Data collection for the study was conducted from November 2022 to May 2023. The Autism Spectrum Quotient (AQ), Hospital Anxiety and Depression Scale, Anxiety Sensitivity Index, and Dunn Adolescent/Adult Sensory Profile were given to participants. The Headache Impact Test-6 and the Visual Analogue Scale were used to evaluate quality of life and headache intensity for patients with migraine. Analyses examined how autism affects migraine-related disability, anxiety, and depressive symptoms through anxiety and sensory sensitivity. While 35% of patients with migraine were found to have autistic traits (AQ ≥ 23), this rate was found to be 17% in healthy controls. In the migraine group, autistic traits were positively correlated with sensory sensitivity, anxiety sensitivity, and depressive symptoms. Although autistic traits did not have a direct effect on headache-related disability and anxiety symptoms, indirect effects through anxiety sensitivity and sensory sensitivity were found to be significant (total indirect effect = 0.16, 95% confidence interval [CI] = [0.08, 0.25], total indirect effect = 0.24, 95% CI = [0.14, 0.33]). In addition, autistic traits had a direct effect on depressive symptoms. Indirect effects through anxiety sensitivity and sensory sensitivity were also significant (total indirect effect = 0.14, 95% CI = [0.08, 0.21]). This study shows that autistic traits are more frequent among patients with migraine and that these traits exhibit indirect effects on headache-related disability and psychiatric comorbidities. Recognizing autistic traits in patients with migraine may be crucial for formulating methods to mitigate comorbidities and enhance the quality of life in this population. Autism and migraine are two different conditions that affect the brain and sensory traits. We do not know much about how these two conditions affect each other, so we compared autism traits in people with migraine and healthy controls. We found that people with migraine are more likely to have autism traits, which can make migraine disability, anxiety, and depression worse; understanding and treating these traits could improve life quality for migraine patients.

Since temperament affects the development of social behaviours and interpersonal relations, the possible links between autistic traits and temperament are of particular interest. The purpose of the study was to explore the relationships between autistic traits and temperamental characteristics in the framework of the Regulative Temperament Theory by Strelau, and the Emotionality, Activity and Sociability theory by Buss and Plomin, with particular emphasis on gender differences. The Autism Spectrum Quotient (AQ), Formal Characteristics of Behaviour – Temperament Inventory and Temperament Survey for Adults were administered. The participants were 593 university students, including 364 females and 229 males. Results showed positive correlations between autistic traits and Emotional Reactivity, Perseveration, Distress, Fear and Anger, and negative correlations with Activity, Briskness, Endurance and Sociability. The results of multiple regression analyses involving the Autism Spectrum Quotient score as a dependent measure were different for females and males. Results of exploratory PCA analysis showed that AQ score, Sociability and Activity loaded one factor (with AQ loading being opposite to two others). High AQ scorers demonstrated higher Emotional Reactivity, Perseveration, Distress and Anger, and lower Briskness, Endurance, Activity and Sociability as compared to norms for the general population. In this study we showed that temperament measures were able to identify items that correlated in parts with autistic traits, while other items were obverse. The relationships between temperament and autistic traits differ slightly between genders. We assume that with regard to the broader autism phenotype, temperaments might be helpful in characterizing healthy control samples.

This study distinguished between different subclusters of autistic traits in the general population and examined the relationships between these subclusters, looking at the eyes of faces, and the ability to recognize facial identity. Using the Autism Spectrum Quotient (AQ) measure in a university-recruited sample, we separate the social aspects of autistic traits (i.e., those related to communication and social interaction;AQ-Social) from the non-social aspects, particularly attention-to-detail (AQ-Attention). We provide the first evidence that these social and non-social aspects are associated differentially with looking at eyes: While AQ-Social showed the commonly assumed tendency towards reduced looking at eyes, AQ-Attention was associated with increased looking at eyes. We also report that higher attention-to-detail (AQ-Attention) was then indirectly related to improved face recognition, mediated by increased number of fixations to the eyes during face learning. Higher levels of socially relevant autistic traits (AQ-Social) trended in the opposite direction towards being related to poorer face recognition (significantly so in females on the Cambridge Face Memory Test). There was no evidence of any mediated relationship between AQ-Social and face recognition via reduced looking at the eyes. These different effects of AQ-Attention and AQ-Social suggest face-processing studies in Autism Spectrum Disorder might similarly benefit from considering symptom subclusters. Additionally, concerning mechanisms of face recognition, our results support the view that more looking at eyes predicts better face memory.

IntroductionChildhood trauma (CT) and bullying have been shown to be associated with autistic traits (AT) and to mediate the relationship between AT and psychotic experiences (PEs). Understanding how different childhood adversity subtypes influence distinct domains of PEs can provide important insights for preventing PEs in individuals with high AT.ObjectivesThis study aimed to investigate the impacts of childhood adversity subtypes on the relationship between AT and PEs in a general population twin sample.MethodsWe analyzed data on 792 twins and siblings from the first wave of the TwinssCan Project, a longitudinal general population twin cohort. AT were measured using the Autism-Spectrum Quotient (AQ), and PEs using the Community Assessment of Psychic Experiences (CAPE) which consists of three subscales (positive, negative and depressive). CT subtypes were assessed using the Childhood Trauma Questionnaire (CTQ), evaluating emotional, physical, and sexual abuse, as well as emotional and physical neglect. Bullying was assessed using the Retrospective Bullying Questionnaire (RBQ). Multilevel linear regression analyses were conducted. Positive, negative, and depressive PEs were regarded as the dependent variables, interactions of CT subtypes and bullying with total AQ were regarded as independent variables in separate models. All models were adjusted for age and sex. Bonferroni correction (p<0.008) was applied for multiple comparisons.ResultsThe mean of the age of the participants was 17.5 ± 3.6 years and 60.2% of the sample was female. Emotional abuse (B = 0.12, 95% CI: 0.08 to 0.15), physical abuse (B = 0.15, 95% CI: 0.07 to 0.22), sexual abuse (B = 0.10, 95% CI: 0.03 to 0.16), emotional neglect (B = 0.05, 95% CI: 0.02 to 0.09) and physical neglect (B = 0.07, 95% CI: 0.03 to 0.11) significantly moderated the positive relationship between AT and positive PEs. However, only emotional abuse uniquely moderated the relationship between AT and both negative and depressive PEs (B = 0.09, 95% CI: 0.04 to 0.13; B = 0.09, 95% CI: 0.04 to 0.14) with physical neglect showing a trend toward significance for depressive PEs (B = 0.08, 95% CI: 0.02 to 0.13). Bullying did not moderate any domain of PEs.ConclusionsEmotional abuse may play a unique role in moderating the relationship between AT and PEs, affecting all domains of psychosis expression. Conversely, other forms of CT predominantly influence positive PEs. Further research is needed to clarify the distinct pathways through which distinct types of childhood adversity impact the association between AT and PEs.Disclosure of InterestM. Karaçam Doğan: None Declared, T. Prachason: None Declared, B. Lin: None Declared, L.-K. Pries: None Declared, A. Arias-Magnasco: None Declared, R. Bortoletto: None Declared, C. Menne-Lothmann: None Declared, J. Decoster: None Declared, R. van Winkel: None Declared, D. Collip: None Declared, P. Delespaul: None Declared, M. De Hert: None Declared, C. Derom: None Declared, E. Thiery: None Declared, N. Jacobs: None Declared, J. van Os: None Declared, B. Rutten: None Declared, N. Brondino : None Declared, M. Colizzi Consultant of: GW Pharma Limited, GW Pharma Italy SRL and F. Hoffmann-La Roche Limited, outside of this work. , L. Fusar-Poli: None Declared, S. Guloksuz: None Declared

Little is known about the relationship between autistic traits and addictive behaviors such as problem gambling. Thus, the present study examined clinical characteristics and multiple facets of cognition in young adults who gamble and have autistic traits. A total of 102 young adults who gamble were recruited from two Mid-Western university communities in the United States using media advertisements. Autistic traits were examined using the brief Autism-Spectrum Quotient (AQ-10). Clinician rating scales, questionnaires, and cognitive tests were completed. Relationships between AQ10 scores and demographic, gambling symptom, and neurocognitive measures were evaluated. Autistic traits were correlated with disordered gambling symptoms, attention-deficit/hyperactivity disorder (ADHD) symptoms, trait impulsivity, and some types of obsessive-compulsive symptoms. In regression, ADHD no longer significantly related to autistic traits once disordered gambling symptoms were accounted for; whereas the link between autistic traits and disordered gambling symptoms was robust even controlling for ADHD. These data suggest a particularly strong relationship between autistic traits and problem gambling symptoms, as well as certain aspects of impulsivity and compulsivity. The link between ADHD and autistic traits in some prior studies may have been attributable to disordered gambling symptoms, which was likely not screened for, and since individuals may endorse ADHD instruments due to other impulsive/compulsive symptom types (eg, gambling). The contribution of autistic traits to the emergence and chronicity of disordered gambling now requires further scrutiny, not only in community samples (such as this) but also in clinical settings.

Autism spectrum disorder (ASD) is a neurodevelopmental disorder that influences an individual's cognitive functions and social interaction. While most studies have focused on children and adolescents diagnosed with ASD, elevated levels of autistic traits in subclinical populations may also influence individuals' daily functioning. Autistic traits are also linked to the Big Five personality. In particular, neuroticism (emotion instability) has been shown to be positively associated with autistic traits, which may contribute to behavioral symptoms of autistic traits. The present study aimed to investigate the association between autistic symptoms and sensorimotor processing among a subclinical population. One hundred young adults (Mage = 20.32 years; SD = 3.69 years; 69 female) completed a choice reaction time (RT) task, and their behavioral performance was analyzed using the ex-Gaussian modeling. The Autism Quotient (AQ) and the Ten-Item Personality Inventory (TIPI) were used to assess autistic traits and neuroticism, respectively. The mediation analysis was conducted to examine the behavioral mechanism through which autistic traits influence sensorimotor processing. The results showed that the AQ score was negatively correlated with RT and positively correlated with neuroticism score. Importantly, the mediation analysis indicated an indirect effect, suggesting that neuroticism mediates the association between the AQ score and RT. The findings indicated a possible mechanism of the association between autistic traits and sensorimotor responses and suggested that neuroticism should be included as an intervention target for ASD. The present study contributes to the research on autistic traits and has practical implications for future intervention programs to improve daily functioning among individuals with ASD.

BackgroundRight-hemisphere brain regions are strongly implicated in facial emotion processing (FEP), a phenomenon termed right-hemispheric bias. Variability in FEP hemispheric bias is thought to underpin differences in facial emotion recognition ability and has been associated with age, handedness, biological sex, and autistic traits. However, findings from research to date investigating factors associated with FEP hemispheric bias have been inconsistent.ObjectiveTo examine if FEP hemispheric bias can be predicted by individual factors such as age, biological sex, handedness, and autistic traits.Methods427 adults recruited from the general population aged 18–67 years completed the Autism-spectrum Quotient. We also assessed covariates previously linked with FEP hemispheric bias including age, handedness, and biological sex. FEP hemispheric bias was indexed using laterality quotients calculated from a Chimeric Faces Task, where participants indicated which of two identical (but mirrored) half-emotional half-neutral (no emotion) chimeric faces were more emotive.ResultsLinear regression models revealed that (1) handedness predicted FEP hemispheric choice bias, (2) the attention switching Autism-spectrum Quotient subscale predicted FEP hemispheric reaction time bias, and (3) the imagination Autism-spectrum Quotient subscale predicted FEP hemispheric reaction time bias for males, but not females.ConclusionsThese findings indicate that the relationship between autistic traits and FEP hemispheric bias is nuanced. Additionally, handedness influences hemispheric bias effects during FEP. Future research should endeavour to investigate if FEP hemispheric bias is dependent on the emotion being observed and consider using more direct measures of hemispheric bias.

In recent years, referrals of youth to specialised gender services have risen sharply, with ~11% of these youth diagnosed as autistic compared with a general population rate of ~1%. In two preregistered studies, we addressed this insufficiently understood intersection. In Study 1, we examined the number and developmental trajectory of autism traits in autistic and nonautistic gender clinic-referred and cisgender youth (aged 7–16 years) using both screening measures (Autism-Spectrum Quotient Children’s Version and Autism-Spectrum Quotient Adolescent Version, Social Communication Questionnaire–Lifetime) and diagnostic tools (Autism Diagnostic Interview–Revised, Brief Observation of Symptoms of Autism). In Study 2, we examined autism traits among the caregivers of participants from each group using the Autism-Spectrum Quotient Adolescent Version. Study 1 results showed the autism phenotype in autistic gender clinic-referred youth closely resembled that of their cisgender autistic peers. In addition, after addressing methodological limitations in previous research, we found no evidence of elevated autism traits in nonautistic gender clinic-referred youth, challenging findings of some earlier studies. Study 2 provided evidence of familial aggregation of both autism traits and diagnoses among caregivers of both autistic gender clinic-referred and cisgender participants. Taken together, these findings challenge the hypothesis that autism in gender-diverse youth is merely a ‘phenomimic’ of autism and provide valuable clinical insights into the presentation of autism in this population.Lay abstractIn recent years, more young people have been referred to specialised gender clinics for support with their gender identity. Interestingly, about 11% of these young people are also diagnosed with autism–much higher than the general population rate of only around 1%. This overlap has raised important questions about how autism and gender diversity are related, and even whether autism traits in gender-diverse people with an autism diagnosis really reflect autism. In this research, we carried out two studies to understand this link better. In the first study, we looked at autism traits in gender-diverse children and adolescents aged 7–16 years who were referred to a gender clinic for issues with their gender identity. We compared them with both autistic and nonautistic children who were not referred to gender services. We used several standard tools to assess autism-related traits, including both questionnaires and clinical interviews. We found that gender-diverse youth who were also autistic showed similar patterns of autism traits as cisgender autistic children who were not exploring their gender. Importantly, nonautistic gender-diverse youth did not show unusually high levels of autism traits, which challenges some earlier studies that suggested they might. In the second study, we explored autism traits in the caregivers (mostly mothers) of the young people in our first study. We found that caregivers of autistic children–whether the children were gender-diverse or not–were more likely to be autistic than the caregivers of nonautistic children. Moreover, even nonautistic caregivers of autistic children displayed more autism traits than caregivers of nonautistic children, irrespective of whether their child was gender-diverse or not. Overall, our findings challenge the idea that autism in gender-diverse youth is just a mimic of ‘true’ autism caused by gender-related stress or experiences. Instead, the results point to genuine autism that presents in a typical way. This research provides important insights for clinicians and families, and highlights the need to take the gender-related concerns of autistic children as seriously as of nonautistic children.

The literature examining the co-occurrence of gender dysphoria (GD) and autistic traits has so far been limited to a series of small case studies and two systematic studies, one looking at autistic traits in gender dysphoric children and the other set within the context of the extreme male brain hypothesis and looking at adults. The current study examined this co-occurrence of GD and autistic traits in an adult population, to see whether this heightened prevalence persisted from childhood as well as to provide further comparison of MtF versus FtM transsexuals and homosexual versus nonhomosexual individuals. Using the Autistic Spectrum Quotient (AQ), 91 GD adults (63 male-to-female [MtF] and 28 female-to-male [FtM]) undertaking treatment at a gender clinic completed the AQ. The prevalence of autistic traits consistent with a clinical diagnosis for an autism spectrum disorder (ASD) was 5.5 % (n = 3 MtF and n = 2 FtM) compared to reports of clinical diagnoses of 0.5-2.0 % in the general population. In contrast to the single previous report in adults, there was no significant difference between MtF and FtM on AQ scores; however, all of those who scored above the clinical cut-off were classified as nonhomosexual with respect to natal sex. Results were considered in the context of emerging theories for the observed co-occurrence of GD and autistic traits.

IntroductionBrain maturation is associated with adolescent socio-cognitive development. The lateral posterior region of the cerebellum plays a critical role in higher cognitive processes, and deviations of this region are associated with autism-related behaviors. Hence, it is plausible that developmental changes in this region of the cerebellum during adolescence are different along a variation in autistic traits. Additionally, its difference may be moderated by parental age at birth and weight growth during infancy, which have effects on brain development.ObjectivesThe aim of this study was two folds: (1) to test whether cerebellar development during adolescence is different along a variation in autistic traits (2) to test whether parental age at birth and weight growth during infancy moderate the results of (1).MethodsLongitudinal study was conducted over a 6-year period with 256, 230 and 187 participants ranging from 10.5 to 17.6 years, observing adolescent development respectively at 2-year time periods. We undertook a detailed investigation into differences in the lateral posterior region of the cerebellum volume. The 50-item Autism-Spectrum Quotient (AQ) was rated by primary parents. Weight growth and parental age were evaluated using maternal and child health handbook records. A multiple regression analysis was performed to examine whether AQ subscales, sex, and their interactions affected cerebellar development. Moderation analysis assessed whether parental age and weight growth moderated associations between cerebellar development and autistic traits. All participants provided written informed consent, and the study was approved by the Ethics Committee (No.10069).ResultsInteractions between sex and attention switching and sex and attention to detail were significantly associated with cerebellar development in the bilateral gray matter (GM) and white matter (WM) of Crus I and Crus II (Fig1, 2). Simple slope analyses showed that the slopes of cerebellar development were significant for girls (pFDR < 0.001). Although no significant interaction was found between them, the main effect of attention to detail was significantly associated with cerebellar development in WM of VIIB (pFDR = 0.006). Further, moderation analysis found that the association between the cerebellar development and autistic traits were significantly moderated by maternal age; the magnitude of its effect was significant for high maternal age in boys (pFDR = 0.036, Fig3). Paternal age, early (0-9 months) and late weight growth (4-18 months) also moderated associations between them, however, no significance remained after FDR controlling.Image:Image 2:Image 3:ConclusionsThere are significant associations between cerebellar development during adolescence and autistic traits, and its pattern of association can be moderated by parental ages at birth and weight growth during infancy in a cerebellar region- and sex-specific manner.Disclosure of InterestNone Declared

The use of face masks is one of the measures adopted by the general community to stop the transmission of disease during this ongoing COVID-19 pandemic. This wide use of face masks has indeed been shown to disrupt day-to-day face recognition. People with autism spectrum disorder (ASD) often have predisposed impairment in face recognition and are expected to be more vulnerable to this disruption in face recognition. When faces were initially learned unobstructed, we showed that people with higher autistic traits had a lower face recognition performance for masked faces. In contrast, there was a stronger facilitation in subsequent face recognition of masked faces in typically developing adults, but not in adults with ASD, when masked faces were learned first—this face recognition facilitation is predicted by a higher level of empathy. This paper also discusses how autistic traits and empathy influence processing of faces with and without face masks.