Psychosocial interventions for internalizing disorders in youth and adults with ASD

"He Just Wants Someone to Hear Him and Listen to Him": Barriers and Facilitators to Autistic Youth with Anxiety Receiving Quality Mental Healthcare

About half of autistic youth present with clinically interfering anxiety. Psychotherapies with exposure-focused elements are effective in academic clinical settings and controlled trials. However, there is relatively less research examining the implementation of modified interventions for autistic youth with anxiety in community mental health settings. The current study explores community members' perceptions of barriers and facilitators that impact autistic youth with anxiety's receipt of quality mental health services in their community. Semi-structured interviews were conducted with 15 autistic youth, 15 caregivers of autistic youth, 11 community mental health clinicians, and 8 community mental health clinic leaders. Interviews were analyzed thematically. Participants shared their experiences with facilitators and barriers to autistic youth with anxiety receiving quality mental healthcare. Themes that emerged include (1) characteristics of the autistic youth, (2) engagement of autistic youth and caregivers, (3) building rapport between providers, autistic youth, and caregivers, (4) access to mental health services, (5) intervention fit, and (6) provider characteristics. Based on participants' perspectives and suggestions, future directions for anxiety treatment programs tailored for autistic youth include building more time into the intervention sessions to build rapport, incorporating autistic youth's preferences into provider matches, and providing families with more psychoeducation.

"Education would be step number one": Community mental health clinicians' training and support needs to treat anxiety in autistic youth

Background

Autistic youth experience high rates of anxiety, which has been treated with modified cognitive-behavioral therapy (CBT), often integrating exposure therapy. Such anxiety treatments are effective for this population; however, there remains a gap between these evidence-based mental health interventions and their implementation in community mental health (CMH) services where autistic youth receive care.

Method

This qualitative study conducted semi-structured interviews with four types of community members in the United States: 15 autistic youth with anxiety, 15 caregivers of autistic youth with anxiety, 11 CMH clinicians, and 8 CMH clinic leaders. Participants identified the training needs of CMH clinicians to support the delivery of CBT for autistic youth with anxiety.

Results

Through inductive thematic analysis, three themes were found: presentation of autism and anxiety, intervention delivery, and training format. Participants highlighted the need for clinician education to understand the varying presentations of autism and co-occurring anxiety and how to effectively deliver a personalized mental health intervention for autistic youth. Clinicians also desired a clinician training program that includes engaging components and offers individualized, ongoing support while the intervention is delivered.

Conclusions

Findings from this study will inform the development of a clinician training program to deliver CBT modified for autistic youth with anxiety in CMH contexts.

What supports do autistic adolescents and adults need? Perspectives of self-reporting adults and caregivers

INTRODUCTION

Increasingly, autistic adolescents and adults are accessing occupational therapy. However, limited evidence exists on the type of supports that are important to them. Examining the patterns of supports valued by autistic adolescents and adults will inform the design of occupational therapy services. Therefore, this study aimed to identify what supports autistic adolescents and adults believed to be the most important.

METHODS

This study involved two anonymous online surveys. Survey one involved 54 items and was distributed to caregivers of autistic adolescents and/or adults. Survey two included 41 items and was distributed to self-reporting autistic adults. Surveys sought closed and open-ended responses about the support needs of autistic individuals living in Australia. Quantitative data were analysed as counts and frequencies of responses, whereas short-answer responses were analysed through content analysis.

COMMUNITY AND CONSUMER INVOLVEMENT

There was no consumer or community involvement in the completion of this project.

RESULTS

A total of 68 caregivers of autistic adolescents or adults and 59 self-reporting adults completed the survey resulting in 127 responses. Quantitative data from both autistic adolescents' and adults' closed-answer responses showed that the highest support needs were for supporting participation in employment and supporting health and wellbeing. Content analysis of open-ended responses, performed separately for each participant group, revealed six categories: employment, promoting independence, supporting positive social and communication experiences, supporting health and wellbeing, caregiver support, and promoting autism acceptance.

CONCLUSION

Results highlight that autistic individuals and their caregivers have a diverse range of priorities, all of which align with the scope of occupational therapy practice. Differences between the priorities of autistic individuals and their caregivers highlight the importance of therapists providing person and family-centred approaches tailored towards both the autistic person's and their caregiver's needs.

PLAIN LANGUAGE SUMMARY

Increasingly, autistic adolescents and adults are accessing occupational therapy services. However, limited information exists regarding the type of supports that are important to them. Understanding what supports are valued by autistic adolescents and adults will support occupational therapists deliver effective and individualised services. Therefore, this study aimed to identify what supports autistic adolescents and adults believed to be the most important to them. This study involved two anonymous online surveys. Survey one was completed by caregivers of autistic adolescents and/or adults. Survey two was completed by self-reporting autistic adults. Surveys included both open-ended and closed-answer responses to better understand the support needs of autistic individuals living in Australia. A total of 68 caregivers of autistic adolescents or adults and 59 self-reporting adults completed the survey resulting in 127 responses. Closed-answer response questions from both the caregivers and self-reporting autistic adolescents and adults showed that the highest support needs were for supporting participation in employment and supporting health and wellbeing. Open-ended response questions revealed six main priorities including, employment, promoting independence, supporting positive social and communication experiences, supporting health and wellbeing, caregiver support, and promoting autism acceptance. This study found that autistic individuals and their caregivers have a diverse range of priorities, all of which align with the scope of occupational therapy. Further, participant responses highlight the importance of therapists providing person and family-centred approaches tailored towards both the autistic person's and their caregiver's needs.

Randomized Feasibility Pilot of an Executive Functioning Intervention Adapted for Children's Mental Health Settings

The critical role of executive functioning in autism as well as the co-occurring mental health challenges common among autistic youth support to the immense value of interventions targeting executive functioning for enhancing mental health services for autistic children. The goal of the present study was to conduct a randomized feasibility trial of Unstuck and On Target, an executive functioning intervention, adapted for delivery in children's community mental health setting. Mental health therapists (n = 26) enrolled with participating autistic clients (n = 32) were randomized to receive training in and deliver the adapted Unstuck intervention or to deliver care as usual. We completed masked observational measures of Unstuck strategy use (fidelity) during recorded sessions of participating therapist-client dyads and collected measures of acceptability from participating clients and their caregivers. We also collected measures of pre-post changes in executive functioning and mental health symptoms. Therapists trained in Unstuck demonstrated significantly higher use of Unstuck strategies compared to usual care therapists. Caregivers and autistic clients perceive adapted Unstuck as highly acceptability and helpful. Autistic clients whose therapists were trained in adapted Unstuck demonstrated larger pre-post changes in executive functioning compared to usual care. Across all participating clients, changes in executive functioning were significantly related to changes in mental health symptoms. Finally, clients of therapists trained in adapted Unstuck demonstrated moderate improvements in overall mental health symptoms. The current study provides preliminary evidence of the feasibility and impact of Unstuck and On Target for children's community mental health settings.

Mentalizing and narrative coherence in autistic adults: Cerebellar sequencing and prediction

BYLEMANS, T., et al. Mentalizing and narrative coherence in autistic adults: Cerebellar sequencing and prediction. NEUROSCI BIOBEHAV REV, 2022. - This review focuses on autistic adults and serves 4 purposes: (1) providing an overview of their difficulties regarding mentalizing (understanding others' mental states) and narrative coherence (structured storytelling), (2) highlighting the relations between both skills by examining behavioral observations and shared neural substrates, (3) providing an integrated perspective regarding novel diagnostic tools and support services, and (4) raising awareness of adult autism. We suggest that mentalizing and narrative coherence are related at the behavioral level and neural level. In addition to the traditional mentalizing network, the cerebellum probably serves as an important hub in shared cerebral networks implicated in mentalizing and narrative coherence. Future autism research and support services should tackle new questions within a framework of social cerebellar (dys)functioning.

Effect of Co-occurring Psychiatric Disorders on Treatment of Children with Autism Spectrum Disorder and Anxiety

Co-occurring psychiatric diagnoses are very common in individuals with ASD. Little is known about the effect that co-occurring psychiatric conditions may have on treatment response to CBT for children with ASD and anxiety. The present study examined the relationship between co-occurring psychiatric diagnoses and response to CBT for anxiety in ninety youth with ASD. Psychiatric complexity did not appear to differentially impact treatment response. A notable portion of youth with anxiety and externalizing disorders such as ADHD, no longer met criteria for those externalizing diagnoses following intervention. Results indicate that youth with ASD and anxiety present with complex psychiatric profiles and CBT for anxiety may positively affect co-occurring diagnoses. In addition, thorough and nuanced assessment of psychiatric symptoms in youth with ASD is needed to ensure the differentiation between diagnoses of anxiety and other co-occurring psychiatric symptoms.

Predictors of expert providers' familiarity with intervention practices for school- and transition-age youth with autism spectrum disorder

LAY ABSTRACT

School-age children, adolescents, and young adults with autism spectrum disorder encounter many different types of providers in their pursuit of treatment for anxiety, behavior problems, and social difficulties. These providers may all be familiar with different types of intervention practices. However, research has not yet investigated patterns in expert providers' familiarity with different practices nor how these patterns are related to the characteristics of providers (years in practice, academic discipline, setting) and the youth (age and intellectual disability) they typically support. A panel of 53 expert transdisciplinary providers rated their familiarity with 55 intervention practices (derived from research and expert nominations) via an online Delphi poll. Advanced statistical methods were used to identify types of intervention practices with which providers were familiar, which included two approaches (cognitive and behavioral) and two strategies (engagement and accessibility). Providers who practiced outside a school setting or treated clients without intellectual disability were more familiar with cognitive approaches. Clinical psychologists, behavior analysts, and school-based providers were more familiar with behavioral approaches. Providers practicing outside school settings were also more familiar with engagement strategies, and providers with more years in practice were more familiar with accessibility strategies. These results may help families and researchers to better anticipate how services may vary depending on the types of autism spectrum disorder providers seen and work to reduce disparities in care that may result.

Five Ways Providers Can Improve Mental Healthcare for Autistic Adults: A Review of Mental Healthcare Use, Barriers to Care, and Evidence-Based Recommendations

PURPOSE OF REVIEW

We reviewed the literature from 2017 to 2022 on autistic adults' use of mental healthcare and barriers to care. To encourage immediate improvement in mental healthcare, we provide five strategies mental health providers can use to better care for autistic adults.

RECENT FINDINGS

Most autistic adults use mental healthcare and use it more often than non-autistic adults. Autistic adults' experiences with mental healthcare are characterized by (1) lack of providers knowledgeable about autism, (2) use of treatments that may not be accommodating to individual needs, and (3) difficulty navigating the complex healthcare system. These barriers contribute to prevalent unmet needs for mental healthcare. Autistic adults use mental healthcare frequently but have unmet mental health needs. As necessary systemic changes develop, providers can begin immediately to better care for autistic adults by learning about their needs and taking personalized care approaches to meet those needs.

Short report: A quantitative methodological review of participant characteristics in the literature testing mental health interventions for youth with autism spectrum disorder

LAY ABSTRACT

Previous research has highlighted the importance of mental health treatment for autistic youth. In that research base, most studies focus on demonstrating the efficacy of a particular intervention with a sample of autistic youth. However, understanding the characteristics of samples used within these studies (i.e. demographics) is an important avenue for expanding this research to a more diverse, representative sample of autistic youth in community settings. As such, the current review examined and characterized participants included within mental health treatment research. We coded studies for various demographics among the youth sample, caregivers, and providers participants. Results indicated that while efforts have been made to increase diversity in research, very few studies including transition-aged youth, those identifying as female, and/or those identifying as non-Caucasian. Clinically, a few studies included youth with lower cognitive abilities and/or those with specific mental health problems (e.g. trauma and depression) or more than one co-occurring mental health conditions. Overall, our results highlight several critical gaps in our current evidence base regarding mental health treatment for autistic youth, including the limited clinical representativeness of both provider and child participants.

Emotional Rational Education Training Associated with Mindfulness for Managing Anxiety within Adolescents Affected by High-Functioning Autism: A Descriptive Study

Background: Autism spectrum disorder (ASD) is a chronic and persistent pervasive developmental disorder (PDD) whose characteristic deficit is represented by social difficulties, semantic–pragmatic alterations and a limited, unusual and repetitive pattern of interests and behaviors. Specifically, individuals with high-functioning autism (HFA) frequently exhibit associated internalizing symptoms that are not part of the diagnostic criteria but which, nonetheless, tend to impair daily functioning. In this study, we investigated how some forms of treatment could be useful in subjects with HFA who display internalizing symptoms. Theoretical background relates to standard cognitive therapy (SCT) and rational education training with mindfulness (M-ERE). Methods: In this study, we investigated how some forms of treatment could be useful in subjects with HFA and internalizing symptoms, focusing on standard cognitive therapy (SCT) and mindfulness associated with emotional rational education training (M-ERE). We selected two groups of HFA patients with significant internalizing symptoms and performed two different forms of treatment for six months: SCT and M-ERE. The aim of the study was to verify the effectiveness of an M-ERE protocol with respect to anxious and depressive symptoms in subjects with HFA. Furthermore, we wanted to compare the results obtained with this combined treatment with those obtained in HFA subjects treated with SCT. Results: Our analyses showed an improvement in the internalizing symptoms (especially those related to the anxiety dimension) of the group that followed a treatment based on mindfulness and rational emotional education for 6 months compared to the group that had instead performed a 6-month treatment based on the SCT. Conclusions: Our hypotheses were supported by the results, which highlighted the efficacy of mindfulness-based interventions in the treatment of internalizing symptoms in adolescents with HFA, and specifically showed that an M-ERE intervention appears more effective in managing anxiety compared to treatment with SCT and appears to be equally effective in the management of depressive symptoms. Not only was the M-ERE treatment effective for the management of anxious and depressive symptoms in subjects with HFA, but the efficacy for the management of anxious symptoms was greater than the SCT treatment.

Self-regulation predicts companionship in children with autism

 Self-regulation is associated with many positive outcomes in children with and without autism, including increased mental health and academic achievement, and decreased problem behavior. Less is known regarding whether and how self-regulation and symptoms of mental health challenges (internalizing and externalizing problems) relate to social outcomes, such as friendship quality and loneliness. Parents and teachers of 106 children with autism aged 5-12 reported on children's self-regulation difficulties and externalizing and internalizing symptoms. Four-to-five months later, children reported on the quality of their friendship with their best friend (companionship, conflict, helpfulness, sense of relationship security, closeness), and their feelings of loneliness. Linear regression was used to examine the effects of self-regulation and symptoms of mental health challenges on friendship quality and loneliness. Less self-regulation difficulties predicted stronger companionship and girls had better quality friendships with their best friend than did boys, in terms of companionship, helpfulness, security and closeness, confirming that they have a protective advantage in friendship development. Autism symptoms, IQ, and age were not associated with friendship quality or loneliness. Results highlight the importance of self-regulation and mental health interventions for school-aged children with autism.

A Systematic Review of Mental Health Interventions for ASD: Characterizing Interventions, Intervention Adaptations, and Implementation Outcomes

Youth with autism spectrum disorder (ASD) have high rates of co-occurring mental health needs that necessitate mental health interventions. Given the unique clinical characteristics of youth with ASD, there have been significant efforts to adapt and test mental health interventions for this population. Yet, characterization of the nature and types of interventions adaptations is limited, especially across the wide range of interventions tested for youth with ASD with a focus on implementation factors. Additionally, understanding how these interventions may be implemented in community services is limited. The aims of this systematic review are to characterize the (1) types of interventions tested for co-occurring mental health conditions for youth with ASD; (2) adaptations to mental health interventions for use with youth with ASD; and (3) implementation strategies, outcomes, and determinants of mental health interventions to inform their translation to community service settings. Eighty-three articles testing interventions targeting mental health symptoms in youth with ASD that included implementation factors in analyses were reviewed. The Stirman et al. (2013; 2019) FRAME adaptation, Powell et al. (2012;2015) implementation strategies, and Proctor et al. (2011) implementation outcomes taxonomies were applied to characterize the nature and types of adaptations for use with youth with ASD and types of implementation strategies, outcomes, and determinants used, when available, respectively. Of the interventions examined, the majority (64.1%) were originally designed to target youth mental health concerns and were then adapted to be used with ASD. The most common adaptations included those to the intervention content, particularly adding elements with tailoring or refining aspects of the intervention while maintaining core functions. Half of the articles described at least one implementation strategy used during intervention testing. Fidelity and acceptability were the most frequently examined implementation outcomes, with some examination of appropriateness and feasibility. Nineteen percent of articles described implementation determinants (i.e. barriers/facilitators) of these implementation outcomes. The common adaptations for ASD provide direction for future intervention development and for training community therapists. Further examination, specification, and reporting of implementation strategies and outcomes within ongoing efforts to adapt and interventions to meet the co-occurring mental health needs of youth ASD are needed to facilitate their translation to community settings. Areas for future research as well as clinical implications are discussed.

Ventrolateral prefrontal hemodynamic responses in autism spectrum disorder with and without depression

In clinical settings, autism spectrum disorder (ASD) with comorbid depression is often difficult to diagnose, and should be considered in treatment. However, to our knowledge, no functional imaging study has examined the difference between ASD adolescents with and without comorbid depression. We aimed to compare the characteristics and prefrontal brain function of ASD with and without depression in order to identify a biological marker that can be used to detect the difference. Twenty-eight drug-naïve adolescents with ASD (14 ASD with and 14 ASD without depression) and 14 age- and gender-matched adolescents with typical development were evaluated using several variables. These included intelligence quotient, autism quotient, depression severity using the Beck Depression Inventory 2nd edition (BDI-II), and level of social functioning using the Social Adaptation Self-evaluation Scale (SASS). In addition, frontotemporal hemodynamic responses during a verbal fluency task (VFT) were measured using functional near-infrared spectroscopy (fNIRS). The ASD group, including both of the ASD with and ASD without depression groups, showed smaller hemodynamic responses than the typical development group in portions of the left dorsolateral prefrontal cortex (DLPFC), bilateral ventrolateral prefrontal cortex (VLPFC) and anterior part of the temporal cortex (aTC) during the VFT. Moreover, the smaller hemodynamic responses in the right VLPFC during the VFT in the ASD group were associated with the worse BDI-II and SASS scores. Furthermore, the ASD with depression group showed smaller hemodynamic responses in the right VLPFC during the VFT than the ASD without depression group in a direct comparison. Adolescents with ASD showed reduced activation in broad frontotemporal regions during a cognitive task compared with those with typical development. More specifically, the right VLPFC activation reflected the level of self-estimated depression and social functioning in the ASD subjects, and could be used to discriminate between ASD adolescents with and without depression.

Mental Health Services for Autistic Individuals Across the Lifespan: Recent Advances and Current Gaps

PURPOSE OF REVIEW

This synthesis of recent mental health services research with autistic individuals presents significant advances, current gaps, and recommendations for improving mental healthcare for this population.

RECENT FINDINGS

Recent advances include improved understanding of co-occurring mental health conditions among autistic individuals, a growing evidence base for interventions to address them, the development and implementation of new service models to support mental health for this population, and a substantial increase in mental health services and implementation research focused on autism. Ongoing challenges include a lack of mental health interventions designed for community implementation with autistic individuals, limited workforce capacity, complex and disconnected service systems, and racial, ethnic, and socioeconomic disparities in accessibility and quality of mental health services. Despite the advances in our understanding of mental health needs and mental health services for autistic individuals, several critical gaps remain. We encourage future efforts to develop and test interventions that can be used in community settings, train and incentivize the workforce to provide them, realign policies and funding with best practice, and embrace an equity-focused approach to autism research and care.

Correction to: A Systematic Review of Mental Health Interventions for ASD: Characterizing Interventions, Intervention Adaptations, and Implementation Outcomes

Due to the errors occurred in the originally published version, this article is being reprinted in its entirety as Correction. All errors have been corrected. It is the correct version.

Perceived helpfulness of depression treatments among young adults with autism

Currently available treatments for depression show limited effectiveness in adults with autism spectrum disorders (ASD) based on measures of symptom changes and clinician impressions. Perceived helpfulness is another metric that has been found to be useful for understanding treatment outcomes in the general population, but it has not yet been explored in adults with ASD. Thus, the current study collected online survey data to examine patient-perceived treatment helpfulness in a sample of 144 adults with ASD who reported that they were currently receiving community-based treatment for depression. Findings indicate that while there was variability in the levels of perceived helpfulness for both medication and individual therapy, most adults with ASD perceived treatment to be at least moderately helpful. Notably, adults with ASD reported having been in treatment for a prolonged duration (5 to 6 years). Ordinal logistic regression models showed that adults with more depressive symptoms perceived treatments to be less helpful (i.e., medications: odds ratio [OR] = 0.92, 95% confidence interval[CI] = 0.89-0.95; individual therapy: OR = 0.95, 95% CI = 0.92-0.99). Moreover, women perceived medication as more helpful than men (OR = 2.33, 95% CI = 1.13-4.82). Other individual (i.e., age, race, education level) and treatment (i.e., treatment length, concurrent treatment) characteristics were not significantly associated with perceived helpfulness. These findings suggest that future studies may want to use perceived helpfulness, in addition to traditionally used objective outcomes, to understand patients' treatment experience and evaluate depression treatments for adults with ASD. LAY SUMMARY: Adults with autism are much more likely to be depressed than those without autism; therefore, effective depression treatments are necessary to improve mental health outcomes in this group. This online survey study found that most adults with autism felt that the depression treatments they were receiving in the community (i.e., medication and individual therapy) were helpful. Females and those with fewer symptoms of depression felt treatments were more helpful compared with males and those with more symptoms of depression. Our findings suggest that when examining whether treatments for depression are effective, it may be important to measure adults' feelings about the helpfulness of the treatments in addition to measuring changes in symptoms of depression.

Toward a Gender-Sensitive Approach of Psychiatric Rehabilitation in Autism Spectrum Disorder (ASD): A Systematic Review of Women Needs in the Domains of Romantic Relationships and Reproductive Health

Later age of diagnosis, better expressive behaviors, increased use of camouflage strategies but also increased psychiatric symptoms, more unmet needs, and a general lower quality of life are characteristics often associated with female gender in autism spectrum disorder (ASD). Psychiatric rehabilitation has shown small to moderate effectiveness in improving patients' outcomes in ASD. Few gender differences have been found in the response to psychiatric rehabilitation. This might be related to the predominance of males in research samples, but also to the lack of programs directly addressing women's unmet needs. The objectives of the present paper were: (i) to review the needs for care of autistic women in romantic relationships and reproductive health; (ii) to review the existing psychosocial treatments in these domains; and (iii) to evaluate the strengths and limitations of the current body of evidence to guide future research. A systematic electronic database search (PubMed and PsycINFO), following PRISMA guidelines, was conducted on autistic women's needs for care relating to psychiatric rehabilitation in romantic relationships and reproductive health. Out of 27 articles, 22 reported on romantic relationships and 16 used a quantitative design. Most studies were cross-sectional (n = 21) and conducted in North America or Europe. Eight studies reported on interventions addressing romantic relationships; no published study reported on interventions on reproductive health or parenting. Most interventions did not include gender-sensitive content (i.e., gender variance and gender-related social norms, roles, and expectations). Autistic women and autistic gender-diverse individuals may face unique challenges in the domains of romantic relationships and reproductive health (high levels of stigma, high risk of sexual abuse, increased psychiatric symptoms, and more unmet needs). We discussed the potential implications for improving women's access to psychiatric and psychosocial treatment, for designing gender-sensitive recovery-oriented interventions, and for future research.

Depression in Youth With Autism Spectrum Disorder

Depression is both common and impactful in youth with autism spectrum disorder (ASD) and is swiftly growing in recognition as a major public health concern within the autism community. This article is intended to provide a brief overview of the prevalence, impact, presentation, and risk factors associated with cooccurring depression in children and adolescents with ASD. Clinical guidelines for the assessment and treatment of depression in the ASD population are offered in line with the small existing evidence base.

The Protracted Maturation of Associative Layer IIIC Pyramidal Neurons in the Human Prefrontal Cortex During Childhood: A Major Role in Cognitive Development and Selective Alteration in Autism

The human specific cognitive shift starts around the age of 2 years with the onset of self-awareness, and continues with extraordinary increase in cognitive capacities during early childhood. Diffuse changes in functional connectivity in children aged 2-6 years indicate an increase in the capacity of cortical network. Interestingly, structural network complexity does not increase during this time and, thus, it is likely to be induced by selective maturation of a specific neuronal subclass. Here, we provide an overview of a subclass of cortico-cortical neurons, the associative layer IIIC pyramids of the human prefrontal cortex. Their local axonal collaterals are in control of the prefrontal cortico-cortical output, while their long projections modulate inter-areal processing. In this way, layer IIIC pyramids are the major integrative element of cortical processing, and changes in their connectivity patterns will affect global cortical functioning. Layer IIIC neurons have a unique pattern of dendritic maturation. In contrast to other classes of principal neurons, they undergo an additional phase of extensive dendritic growth during early childhood, and show characteristic molecular changes. Taken together, circuits associated with layer IIIC neurons have the most protracted period of developmental plasticity. This unique feature is advanced but also provides a window of opportunity for pathological events to disrupt normal formation of cognitive circuits involving layer IIIC neurons. In this manuscript, we discuss how disrupted dendritic and axonal maturation of layer IIIC neurons may lead into global cortical disconnectivity, affecting development of complex communication and social abilities. We also propose a model that developmentally dictated incorporation of layer IIIC neurons into maturing cortico-cortical circuits between 2 to 6 years will reveal a previous (perinatal) lesion affecting other classes of principal neurons. This "disclosure" of pre-existing functionally silent lesions of other neuronal classes induced by development of layer IIIC associative neurons, or their direct alteration, could be found in different forms of autism spectrum disorders. Understanding the gene-environment interaction in shaping cognitive microcircuitries may be fundamental for developing rehabilitation and prevention strategies in autism spectrum and other cognitive disorders.