Neurodiversity and Autism Intervention: Reconciling Perspectives Through a Naturalistic Developmental Behavioral Intervention Framework

Video Modeling to Support Social Communication Goals of Autistic Adults: A Tutorial

PURPOSE

Decades of research have shown video modeling to be an effective tool for teaching and supporting a variety of skills in autistic children. More recently, video modeling has emerged as an effective support for autistic adults, with much of the literature focused on vocational success through support of language skills. The purpose of this tutorial is to provide speech-language pathologists, autistic adults, and other team members with evidence-based guidelines for use of video modeling to support success with social communication across settings.

METHOD

This evidence-based tutorial draws from the literature on video modeling for autistic adults in the area of social communication, presenting empirically supported guidelines for speech-language pathologists considering video modeling as a tool to support social communication within this population and their interaction partners. This tutorial presents an evidence-based, step-by-step guide to the planning, creation, and use of video models with and by autistic adults, along with important additional considerations based on relevant literature.

CONCLUSIONS

Video modeling is a social communication support that is backed by the scientific literature as an efficacious tool for use by autistic adults. This tutorial will guide speech-language pathologists' use of this evidence-based tool as they work alongside autistic adults and others to help meet social communication goals across settings.

Neurocognitive features in childhood & adulthood in autism spectrum disorder: A neurodiversity approach

OBJECTIVES

Autism spectrum disorder (ASD) is a neurodevelopmental disorder with a diverse profile of cognitive functions. Heterogeneity is observed among both baseline and comorbid features concerning the diversity of neuropathology in autism. Symptoms vary depending on the developmental stage, level of severity, or comorbidity with other medical or psychiatric diagnoses such as intellectual disability, epilepsy, and anxiety disorders.

METHOD

The neurodiversity movement does not face variations in neurological and cognitive development in ASD as deficits but as normal non-pathological human variations. Thus, ASD is not identified as a neurocognitive pathological disorder that deviates from the typical, but as a neuro-individuality, a normal manifestation of a neurobiological variation within the population.

RESULTS

In this light, neurodiversity is described as equivalent to any other human variation, such as ethnicity, gender, or sexual orientation. This review will provide insights about the neurodiversity approach in children and adults with ASD. Using a neurodiversity approach can be helpful when working with children who have autism spectrum disorder (ASD).

DISCUSSION

This method acknowledges and values the various ways that people with ASD interact with one another and experience the world in order to embrace the neurodiversity approach when working with children with ASD.

Characterizing mechanisms of caregiver-mediated naturalistic developmental behavioral interventions for autistic toddlers: A randomized clinical trial

LAY ABSTRACT

Caregiver-mediated early interventions support caregivers' use of strategies to improve their young autistic child's communication. In the current clinical trial, we sought to isolate the most effective strategies to improve short-term and long-term child communication outcomes. Results demonstrated how children may benefit from caregiver prompts to facilitate long-term language outcomes. In conclusion, the current study improves our understanding of how early intervention facilitates child communication outcomes.

Developmental language disorder and neurodiversity: Surfacing contradictions, tensions and unanswered questions

BACKGROUND

Neurodiversity is increasingly discussed in relation to autism research and practice. However, there is a lack of scholarship concerning the neurodevelopmental condition of Developmental Language Disorder (DLD) and the neurodiversity movement. While this movement may hold opportunities for the DLD community, the application of the concept of neurodiversity to DLD research and practice needs consideration, as DLD and autism have very different levels of public and professional awareness and understanding.

AIMS

In this article, we discuss what the concept of neurodiversity and the associated neurodiversity movement could mean for DLD research and practice. We aim to critique some assumptions that may arise from the application of neurodiversity principles (or assumed principles) to the field of DLD.

METHODS

This is a discussion paper, drawing on the personal experiences and reflections of the author team.

MAIN CONTRIBUTIONS

We make the case for why DLD should be included in discussions about neurodivergence and outline considerations for doing so, and why some issues and applications may be particular to DLD. We outline points of similarity and contrast with autism in relation to our understanding of neurodiversity. We consider the issues around diagnosis and terminology and urge practitioners to continue to diagnose DLD using currently agreed terminology, so as not to undermine recent awareness efforts. We note that a neurodiversity-informed perspective challenges us to offer interventions that operate at the level of our environments, not just at the level of an individual. Indeed, neurodiversity offers a platform to argue for better rights and more inclusive spaces in mental health settings, education and work for children and adults with DLD.

CONCLUSIONS

DLD should be considered from a neurodiversity-informed perspective, and it is our hope that this will lead to neurodiversity-affirming practice that will afford young people with DLD better understanding from members of the public and the professionals who work with them. Further work is needed to better support children, young people and adults with DLD to have a voice in the neurodiversity movement.

WHAT THIS PAPER ADDS

What is already known on the subject Neurodiversity approaches are increasingly being taken up in research and practice in relation to autism, meaning that our understanding of autism and how autistic people are supported is increasingly drawing on the principles of neurodiversity. However, autism is not the only neurodivergent population. Developmental Language Disorder (DLD) is another neurodevelopmental condition; however, relative to autism, DLD has lower awareness amongst professionals and the public. There has been no scholarship that has examined DLD through the lens of neurodiversity, or considered the application of neurodiversity-affirming approaches to DLD. What this paper adds to existing knowledge In this paper, we examine what the neurodiversity movement means for DLD research and practice. In particular, we consider what neurodiversity in the field of autism might teach us about the application of neurodiversity in the field of DLD, and highlight where we believe there are important differences between the two populations. We reflect on what neurodiversity means for intervention, diagnosis, terminology and championing the need for accessibility, especially with regard to mental health support, education and employment. What are the potential or actual clinical implications of this work? Neurodiversity highlights the need to consider interventions at the level of an individual's environment (e.g., how can we make this space more inclusive?) as well as interventions operating at the level of the individual themselves (e.g., interventions focusing on an individual's language skills). We challenge the notion that neurodiversity-affirming approaches mean not diagnosing DLD or changing DLD's terminology: we argue that this is not in the spirit of the original neurodiversity movement, but also that for a condition with such low public awareness, these actions could do more harm than good for families affected by DLD. We call for more in-depth scholarship and discussion around the application of neurodiversity approaches to DLD and argue that the neurodiversity movement offers an important opportunity to raise better awareness and understanding of DLD in multiple sectors, including (but not limited to) mental health, education and employment.

The Effects of Discrete Trial and Natural Environment Teaching on Adaptive Behavior in Toddlers With Autism Spectrum Disorder

The literature has yet to review the differential effects of Natural Environment Teaching (NET) and Discrete Trial Teaching (DTT) on adaptive skills. A sample of 142 children diagnosed with ASD between the ages of 16 and 35 months received either DTT, NET, or both interventions (NET+ DTT). The Bayley Scales of Infant and Toddler Development (BSID) Adaptive Subscale and the Verbal Behavior Milestones Assessment and Placement Program (VB-MAPP) Barriers Assessment were used as baseline and posttest measures. Children who received NET and NET+DTT conditions showed significant improvements compared to the DTT condition indicating that the addition of NET leads to increased adaptive skills and decreased barrier behaviors in participants. DTT may also play a necessary foundational role for children with more significant delays. These results provide support for the use of a combination of teaching strategies in community-based early intervention and refine protocols for teaching adaptive skills to toddlers with ASD.

Affirming Neurodiversity within Applied Behavior Analysis

Criticisms of applied behavior analysis (ABA) from the autistic community continue to intensify and have an appreciable impact on research, practice, and conversation in stakeholder groups. ABA providers aspire to increase quality of life for autistic people; thus, it is imperative for providers to listen with humility and openness to the population we serve. Autistic individuals have unparalleled expertise in their own lives and their own communities. The concerns raised by the autistic community cannot, morally or ethically, be swept aside. There may be a misguided and harmful tendency to devalue concerns due to the speaker's identification as autistic or due to their difference in professional credentials. The concept of neurodiversity can help the ABA field respond to these concerns and collaborate with the largest stakeholders of our services, the autistic clients we serve. This article summarizes some of the key criticisms that autistic advocates raise concerning ABA, discusses the social model of disability and the neurodiversity paradigm, and proposes practical guidance to help the field of ABA integrate neurodiversity and thereby evolve our research and practice. By openly acknowledging the criticisms against ABA and recognizing how we can do better as a field, we believe we can take practical steps towards a profession and a society that more fully embraces inclusion.

Using the ADDIE Model of Instructional Design to Create Programming for Comprehensive ABA Treatment

ABA research abounds with articles on increasing or decreasing a small set of behaviors. These articles fit nicely within the framework of Focused ABA Treatment in which the goal of treatment centers on only a few behaviors. However, many behavioral practitioners spend most of their time developing Comprehensive ABA Treatment in which a large number of behaviors are systematically changed across multiple developmental domains. Few resources are available to help in designing and implementing such programming. This article presents a model from the field of instructional design for the development of comprehensive programming. Applying the ADDIE model-Analyze, Design, Develop, Implement, Evaluate-the article identifies a consistent process to follow, critical actions to take, and helpful resources to use when developing comprehensive programming for individuals with autism.

Adaptation of COMPASS for use in Autism-Specific Schools in Australia: A Cluster Randomized Trial

Autistic students are educated in Australia across a variety of contexts and almost all educators use individualized goal-setting as a way of ensuring appropriate accommodations and curriculum modifications. Educators experience similar challenges when developing individualized goals for students, including lack of a standardized process for goal setting, inconsistent support networks, and challenges with data-driven goal-setting. The purpose of our research was to adapt and trial the Collaborative Model for Competence and Success (COMPASS), a research-based intervention aimed at improving the individualized goal-setting process for autistic students. Our primary hypothesis was that autistic students who participate in COMPASS would demonstrate more growth on their individualized outcomes relative to autistic students who receive services as usual (SAU). To answer our primary research question, we applied a single-blind cluster randomized trial. Participants were randomized into one of two groups: (a) a COMPASS intervention group and (b) a SAU group. Results indicate that students whose teachers received the intervention made more progress on their final individualized goals than those who received SAU, replicating previous findings regarding COMPASS in the US. Also, the adaptation of COMPASS for an Australian context showed high rates of satisfaction and fidelity. The success of this intervention in improving the progress that students make on their individualized goals demonstrates the benefits of a standardized intervention that supports teachers and families in this critical practice.

Impact of Adverse Childhood Experiences and Mental Health on School Success in Autistic Children: Findings from the 2016-2021 National Survey of Children's Health

PURPOSE

School is an important developmental setting for children. Adverse childhood experiences (ACEs) are linked to overall lower educational attainment and are more prevalent in children with Autism Spectrum Disorder (ASD) than in their neurotypical peers. The aim of this study is to test the association between ACEs and school outcomes among autistic children and whether mental health conditions explain this association.

METHODS

We combined 2016-2021 data from the National Surveys of Children's Health for children, ages 6-17, identified by parents as having ASD (N = 4,997), to examine the relationship between ACEs and school outcomes (grade progression, school attendance, and engagement). We analyzed depression and anxiety variables to investigate the extent to which mental health can explain the relationships between ACEs and school outcomes.

RESULTS

ACEs were significantly associated with school outcomes. With increased ACEs, autistic children experienced a significant decrease in the odds of school attendance, grade progression and school engagement (p < .05). Furthermore, although depression and anxiety symptoms were significantly associated with school outcomes, they cannot explain away the enduring, strong relationship between ACEs and level of grade progression, engagement, and school success index.

CONCLUSION

Our findings suggest ACEs predict school success among autistic children, with mental health conditions appearing to mediate the relationship between ACEs and key factors in school success. Efforts should be made to proactively identify and address the impact of ACEs and associated mental health conditions among autistic students.

Do focused interests support word learning? A study with autistic and nonautistic children

Although focused interests are often associated with a diagnosis of autism, they are common in nonautistic individuals as well. Previous studies have explored how these interests impact cognitive, social, and language development. While some research has suggested that strong interests can detract from learning (particularly for autistic children), newer research has indicated that they can be advantageous. In this pre-registered study, we asked whether focused interests support word learning in 44 autistic children and a vocabulary-matched sample of 44 nonautistic children (mean ages 58 and 34 months respectively). In a word-learning task administered over Zoom, children were exposed to an action labeled by a novel word. The action was either depicted by their focused interest or by a neutral image; stimuli were personalized for each child. At test, they were asked to identify the referent of the novel word, and their eye gaze was evaluated as a measure of learning. The preregistered analyses revealed an effect of focused interests, and post-hoc analyses clarified that autistic children learned the novel word in both the focused interest and neutral conditions, while nonautistic children only showed evidence of learning in the neutral condition. These results suggest that focused interests are not disruptive for vocabulary learning in autism, and thus they could be utilized in programming that supports early language learning in this population.

Enhancing stakeholder roles in autism early interventions in the United States: A stakeholder-driven research agenda

LAY ABSTRACT

In this article, we outline a stakeholder-driven research agenda to guide future early intervention research for children with autism. Our research team collaborated with autism service providers, parents of individuals with autism, and autistic people to create this research agenda by (1) conducting workshops with community members and (2) distributing a survey to a larger number of community members around the country. The finalized research agenda includes (1) Guiding Principles for current and future research, (2) Research Priorities focused on early intervention for individuals with autism, and (3) Systems Implications to consider in future clinical, research, and policy efforts for early intervention. The full version of the research agenda is available in Supplemental Material. This article lists the main points of the research agenda and discusses unique themes highlighted by the community members. One main conclusion is that researchers need to include community members in decision-making and consultant positions throughout the research process to best meet the needs of the broader autism community. We have created a researcher workbook which we hope may facilitate these community consultation efforts. This workbook is available in Supplemental Material.

Initial evaluation of an environment-based intervention for participation of autistic children: a randomized controlled trial

PURPOSE

To evaluate the efficacy of environment-based intervention on participation outcomes and parent efficacy in autistic children.

MATERIALS AND METHODS

Twenty-one autistic children 6-10 years old and their parents were randomized to environment-based intervention (n = 11) or usual care (n = 10). The environment-based intervention targets individualized participation goals in leisure and community activities through changing environment and activity demands. The study outcomes were Canadian Occupational Performance Measure (COPM), Goal attainment scaling (GAS), and Parent Empowerment and Efficacy Measure (PEEM). Assessments included baseline, 12 weeks (post-test), and 24 weeks (follow-up). Mixed ANOVAs were used to examine within-group and between-group effects in outcome variables.

RESULTS

The COPM performance and satisfaction scores and GAS T-scores increased after environment-based intervention from baseline to 12 weeks and 24 weeks (p < 0.001) but did not significantly differ from usual care. The medium to large effect sizes of COPM performance and GAS T-scores favored the environment-based intervention. For the PEEM scores, no significant differences were found.

CONCLUSIONS

Environment-based intervention may support school-age autistic children to participate in self-chosen activities over time. The intervention effects on participation goals and parent efficacy, however, were inconclusive and need further research.

The Neurodiversity Attitudes Questionnaire: Development and Initial Validation

LAY ABSTRACT

Neurodiversity refers to the idea that brain differences (including disabilities) are valuable and should be accepted. Attitudes toward neurodiversity can have real-life impacts on the lives of neurodivergent people (those whose brains do not fit society's "standard"). These impacts can include effects on daily interactions, as well as how professionals such as teachers and doctors deliver services to neurodivergent people. In order to identify negative attitudes toward neurodiversity and potentially improve them, we first need to measure these attitudes. This article describes the development of the Neurodiversity Attitudes Questionnaire (NDAQ). NDAQ development included revision of questionnaire items based on feedback from experts and neurodivergent people, systematically evaluating the way participants responded to questionnaire items, and analysis of how the NDAQ items are grouped into different factors. A preliminary analysis with 351 individuals mostly living in the United States who were currently working or planning to work in a helping profession (e.g. doctors, teachers, therapists, and so on) indicates that the NDAQ measures attitudes toward neurodiversity, is well understood by participants, and fits a five-factor structure. While the NDAQ represents the first instrument designed to specifically assess attitudes toward the broad idea of neurodiversity, further work is still needed.

Effects of a Teacher-Facilitated Peer-Mediated Intervention on Social Play of Preschoolers with Autism

Children with autism often display differences in functional and symbolic play and may experience barriers to social inclusion with peers in preschool settings. Therefore, interventions supporting social play between children with autism and their peers that can be feasibly implemented by teachers in inclusive settings are needed. A teacher-implemented peer-mediated Stay Play Talk (SPT; Goldstein et al. in Top Lang Disord 27(2):182-199, 2007) intervention package targeting the type of play children with autism engage in with peers was implemented using a concurrent multiple baseline design across four participant/peer dyads. Using a cascading coaching model with behavioral skills training, a teacher was trained in intervention strategies and then taught and supported four peers to implement the intervention. In addition to visual analysis, to statistically analyze effects, we calculated effect sizes using the parametric measure standardized mean difference. A functional relation between the intervention and increases in interactive play and initiations and decreases in solitary play was demonstrated across all dyads. Results generalized to novel settings and maintained following withdrawal of teacher support. Results suggest that SPT can be effectively implemented by a teacher to support interactive play between children with and without autism in an inclusive classroom. Implications for future research and clinical practice are discussed.

The Social Validity of Behavioral Interventions: Seeking Input from Autistic Adults

Many in the autistic community have expressed concerns regarding the use of behavioral interventions with autistic children, suggesting that these interventions may not be socially valid. Though behavioral interventions have evolved to be more naturalistic and child-centered, little structured research has been done to explicitly seek autistic perspectives on the acceptability of specific components of behavioral interventions. Autistic adults (N = 235) were recruited online to take the Autism Intervention Attitudes Scale (AIAS), a questionnaire designed to gather feedback on common intervention goals and practices. Results indicate that participants find goals and practices that highlight quality of life, safety, and autistic interactions acceptable, while those that focus on normalization based on neurotypical standards are not. An exploratory graph analysis revealed three communities of goals ("uncontroversial goals", "controversial goals", and "social goals"). Comparison between naturalistic and structured intervention components additionally showed that autistic participants favored naturalistic strategies. These findings are in line with known criticisms of behavioral intervention from autistic adults, but also provide more information on the specific ways in which behavioral interventions can be reformed. This information can guide professionals in the development of appropriate goals and decisions around intervention planning.

Access and barriers to supports for children and caregivers attending public child developmental assessment services: Findings from the Sydney child neurodevelopment research registry

Families can spend years waiting for a developmental assessment. We sought to understand supports caregivers had accessed by the time of their child's first multi-disciplinary developmental assessment, the supports caregivers wanted, and the barriers caregivers reported to accessing these supports. We also sought to understand how government funding schemes (the National Disability Insurance Scheme) and sociodemographic factors influenced access to supports. Caregivers were emailed questionnaires on sociodemographic background and intervention history prior to their child's developmental assessment at a tertiary diagnostic and assessment service. Results from 202 caregivers showed most children were receiving less than 2 hours of support each week at assessment. The most common accessed supports were from general practitioners and pediatricians. Caregivers reported behavioral therapists (41%) and psychologists (29%) as the most desired but inaccessible child supports. Half of caregivers nominated a need for parenting interventions. The most frequent barriers to accessing child supports were wait lists, finance, and knowledge. Government funding improved access to the total number of services received (from 2.7 to 5.2 different services), but for disability specific services only (e.g., speech and occupational therapy). Results highlighted disparities for families without government funding, impacting certain groups (e.g., children over 7 years) and services (e.g., mental health). Socioeconomic disadvantage, parental separation, and, surprisingly, being from a non-culturally/linguistically diverse background were associated with fewer services and more barriers. Results highlight the need to facilitate access to supports for families to align with existing recommendations.

Autism spectrum disorder in ICD-11-a critical reflection of its possible impact on clinical practice and research

This perspective article compares and contrasts the conceptualization of Autism Spectrum Disorder (ASD) in ICD-11 and DSM-5. By guiding the user through the ICD-11 text, it is argued that, in contrast to DSM-5, ICD-11 allows a high variety in symptom combinations, which results in an operationalization of ASD that is in favor of an extreme diverse picture, yet possibly at the expense of precision, including unforeseeable effects on clinical practice, care, and research. The clinical utility is questionable as this conceptualization can hardly be differentiated from other mental disorders and autism-like traits. It moves away from an observable, behavioral, and neurodevelopmental disorder to a disorder of inner experience that can hardly be measured objectively. It contains many vague and subjective concepts that lead to non-falsifiable diagnoses. This bears a large danger of false positive diagnoses, of further increased prevalence rates, limitations of access to ASD-specific services and of increasing the non-specificity of treatments. For research, the hypothesis is that the specificity of ASD will be reduced and this will additional increase the already high heterogeneity with the effect that replication of studies will be hampered. This could limit our understanding of etiology and biological pathways of ASD and bears the risk that precision medicine, i.e., a targeted approach for individual treatment strategies based on precise diagnostic markers, is more far from becoming reality. Thus, a more precise, quantitative description and more objective measurement of symptoms are suggested that define the clinical ASD phenotype. Identification of core ASD subtypes/endophenotypes and a precise description of symptoms is the necessary next step to advance diagnostic classification systems. Therefore, employing a more finely grained, objective, clinical symptom characterization which is more relatable to neurobehavioral concepts is of central significance.

Predictors of Health-Related Quality of Life in Neurodivergent Children: A Systematic Review

Health-related Quality of Life (HRQoL) is a multi-faceted construct influenced by a myriad of environmental, demographic, and individual characteristics. Our understanding of these influencers remains highly limited in neurodevelopmental conditions. Existing research in this area is sparse, highly siloed by diagnosis labels, and focused on symptoms. This review synthesized the evidence in this area using a multi-dimensional model of HRQoL and trans-diagnostically across neurodevelopmental conditions. The systematic review, conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Checklist, was completed in June 2023 using Medline, PsycInfo, Embase, PubMed, and Cochrane Library. Our search revealed 78 studies that examined predictors of HRQoL in neurodevelopmental conditions. The majority of these studies focused on autism and ADHD with a paucity of literature in other conditions. Cross-diagnosis investigations were limited despite the fact that many of the examined predictors transcend diagnostic boundaries. Significant gaps were revealed in domains of biology/physiology, functioning, health perceptions, and environmental factors. Very preliminary evidence suggested potentially shared predictors of HRQoL across conditions including positive associations between HRQoL and adaptive functioning, male sex/gender, positive self-perception, physical activity, resources, and positive family context, and negative associations with diagnostic features and mental health symptoms. Studies of transdiagnostic predictors across neurodevelopmental conditions are critically needed to enable care models that address shared needs of neurodivergent individuals beyond diagnostic boundaries. Further understanding of HRQoL from the perspective of neurodivergent communities is a critical area of future work.

Centering Autistic Perspectives: Social Acceptability of Goals, Learning Contexts, and Procedures for Young Autistic Children

Despite the importance of centering autistic perspectives in educational decision-making for autistic children, few studies have directly assessed autistic perspectives on the social acceptability of early childhood practices. We conducted an online survey to recruit perspectives of autistic adults on a current, comprehensive range of educational practices typically employed with autistic children. We also extended the survey to caregivers and early childhood practitioners, to identify commonalities and discrepancies between shareholder groups. We conducted a descriptive survey study to assess social acceptability of goals, learning contexts, and procedures typically implemented with young autistic children. We received responses from 660 individuals, 226 of whom identified as autistic. For Likert scale and ranked items, we reported median rating and ranking for each item, by shareholder group. For open-ended questions, we conducted open and axial coding, to determine consistent themes within and across shareholder groups. Respondents reported (a) high acceptability for goals promoting self-determination and low social validity for goals promoting masking; (b) high acceptability for antecedent interventions and low social validity for some forms of extinction; (c) that appropriate learning environments are highly context dependent, varying with individual needs; and (d) that the child is the most important shareholder in educational decision-making. We make recommendations to practitioners in response to survey results, including (a) respecting autistic culture and characteristics in selecting goals; (b) considering social, emotional, and psychological needs in selecting procedures; and (c) individualizing goals, learning contexts, and procedures based on the child's perspectives and unique needs.

Community perspectives on the appropriateness and importance of support goals for young autistic children

LAY ABSTRACT

Researchers do not know much about what autistic adults, parents and professionals think about support goals for young autistic children. People's views of support goals might also be influenced by their beliefs about early support more generally. This survey involved 87 autistic adults, 159 parents of autistic children and 80 clinical professionals living in New Zealand and Australia. We asked participants questions about themselves and what they thought about early support for young autistic children in general. We then asked participants to rate whether different support goals were appropriate for young autistic children and, if they were appropriate, to rate their level of priority. We found that autistic adults, parents and professionals all rated goals about the adult changing to better support the child, reducing and replacing harmful behaviours and improving the child's quality of life as the highest priorities. They all rated goals about autism characteristics, play skills and academic skills as the lowest priorities. Compared to parents and/or professionals, autistic adults gave lower priority ratings for play skills, autism characteristics and participation goals. Autistic adults were also more likely to rate goals related to play skills and autism characteristics as inappropriate. While these three participant groups generally agreed on the order of priority of early support goals for young autistic children, autistic adults found goals related to autism characteristics, play and/or participation to be an even lower priority and less appropriate than parents and professionals.

Social Validity of Pivotal Response Treatment for Young Autistic Children: Perspectives of Autistic Adults

The social validity of autism behavioral intervention has been questioned. Naturalistic Developmental Behavioral Interventions (NDBIs) attempt to address some concerns, but it is unclear whether autistic people consider NDBIs socially valid. Social validity of an NDBI, Pivotal Response Treatment (PRT), was investigated through autistic adults commenting on videos of autistic children receiving PRT. Qualitative coding of responses generated three themes: respect for individuals; assessment of intervention implementation; and socioemotional considerations. Although video brevity limits the scope of the present study's conclusions, participants highlighted PRT components that appeared socially valid (e.g., reinforcing attempts, following the child's lead) and aspects appearing invalid (e.g., overemphasis on spoken language). Therefore, adjustments appear necessary for PRT to be fully acceptable to the autistic community.

Autism Caregiver Coaching in Africa (ACACIA): Protocol for a type 1-hybrid effectiveness-implementation trial

BACKGROUND

While early autism intervention can significantly improve outcomes, gaps in implementation exist globally. These gaps are clearest in Africa, where forty percent of the world's children will live by 2050. Task-sharing early intervention to non-specialists is a key implementation strategy, given the lack of specialists in Africa. Naturalistic Developmental Behavioral Interventions (NDBI) are a class of early autism intervention that can be delivered by caregivers. As a foundational step to address the early autism intervention gap, we adapted a non-specialist delivered caregiver coaching NDBI for the South African context, and pre-piloted this cascaded task-sharing approach in an existing system of care.

OBJECTIVES

First, we will test the effectiveness of the caregiver coaching NDBI compared to usual care. Second, we will describe coaching implementation factors within the Western Cape Department of Education in South Africa.

METHODS

This is a type 1 effectiveness-implementation hybrid design; assessor-blinded, group randomized controlled trial. Participants include 150 autistic children (18-72 months) and their caregivers who live in Cape Town, South Africa, and those involved in intervention implementation. Early Childhood Development practitioners, employed by the Department of Education, will deliver 12, one hour, coaching sessions to the intervention group. The control group will receive usual care. Distal co-primary outcomes include the Communication Domain Standard Score (Vineland Adaptive Behavior Scales, Third Edition) and the Language and Communication Developmental Quotient (Griffiths Scales of Child Development, Third Edition). Proximal secondary outcome include caregiver strategies measured by the sum of five items from the Joint Engagement Rating Inventory. We will describe key implementation determinants.

RESULTS

Participant enrolment started in April 2023. Estimated primary completion date is March 2027.

CONCLUSION

The ACACIA trial will determine whether a cascaded task-sharing intervention delivered in an educational setting leads to meaningful improvements in communication abilities of autistic children, and identify implementation barriers and facilitators.

TRIAL REGISTRATION

NCT05551728 in Clinical Trial Registry (https://clinicaltrials.gov).

A dual design thinking - universal design approach to catalyze neurodiversity advocacy through collaboration among high-schoolers

Introduction

Neurodiversity describes the fact that humans all have different brains with unique qualities that contribute to society. Though understanding of neurodiversity is gaining traction among the general public, there remains considerable stigma and prejudice toward neurodiverse people. One way to combat these issues is to teach individuals about neurodiversity and encourage them to develop advocacy skills. Development of such knowledge is especially important for adolescents, as they have the capacity to make small (e.g., interpersonal interactions) and large (e.g., school-wide) impacts.

Methods

Eighty-nine high schoolers participated in a two-week virtual summer camp in 2022; research consent/assent was obtained from 19 (11 neurodiverse/neurodivergent). Campers learned about neurodiversity, Universal Design for Learning (UDL), and Design Thinking (DT) through lectures from researchers and neurodivergent people, as well as group activities and discussions. Campers worked in small groups to design a neurodiversity advocacy project based on the principles of UDL and DT. Each group was facilitated by camp counselors-some of whom were neurodiverse-who were all committed to neurodiversity advocacy. Participants completed questionnaires about autism, ADHD, and dyslexia pre- and post-camp. Some also completed optional post-camp interviews.

Results

Pre-camp stigma toward neurodiverse conditions was generally low. However, autism stigma was significantly higher than dyslexia stigma (Z = -2.24, p = 0.025). After camp, autism stigma decreased (Z = -2.98, p = 0.003;) and autism [t(13) = 3.17, p = 0.007] and ADHD [t(13) = 2.87, p = 0.013] knowledge improved. There were no significant changes in ADHD or dyslexia stigma or dyslexia knowledge. Participants reported enjoying collaborating with other campers and learning about UDL and DT. Thematic analysis of interviews generated four themes: Increased Understanding of Neurodiversity; Increasing Empathy and Becoming Less Judgmental; Creating a Neurodiverse Community; and More Awareness is Needed.

Discussion

This pilot investigation suggests that a virtual summer camp can be effective in improving attitudes toward and knowledge of neurodiversity. Qualitative analysis indicated participants became more accepting after the camp, both in terms of being less judgmental toward neurodiverse people and more self-accepting among neurodivergent campers. Future research should investigate the long-term effects of such a program, particularly with diverse samples of students.

Music for autism: a protocol for an international randomized crossover trial on music therapy for children with autism

The notion of a connection between autism and music is as old as the first reported cases of autism, and music has been used as a therapeutic tool for many decades. Music therapy holds promise as an intervention for individuals with autism, harnessing their strengths in music processing to enhance communication and expression. While previous randomized controlled trials have demonstrated positive outcomes in terms of global improvement and quality of life, their reliance on psychological outcomes restricts our understanding of underlying mechanisms. This paper introduces the protocol for the Music for Autism study, a randomized crossover trial designed to investigate the effects of a 12-week music therapy intervention on a range of psychometric, neuroimaging, and biological outcomes in school-aged children with autism. The protocol builds upon previous research and aims to both replicate and expand upon findings that demonstrated improvements in social communication and functional brain connectivity following a music intervention. The primary objective of this trial is to determine whether music therapy leads to improvements in social communication and functional brain connectivity as compared to play-based therapy. In addition, secondary aims include exploring various relevant psychometric, neuroimaging, and biological outcomes. To achieve these objectives, we will enroll 80 participants aged 6-12 years in this international, assessor-blinded, crossover randomized controlled trial. Each participant will be randomly assigned to receive either music therapy or play-based therapy for a period of 12 weeks, followed by a 12-week washout period, after which they will receive the alternate intervention. Assessments will be conducted four times, before and after each intervention period. The protocol of the Music for Autism trial provides a comprehensive framework for studying the effects of music therapy on a range of multidimensional outcomes in children with autism. The findings from this trial have the potential to contribute to the development of evidence-based interventions that leverage strengths in music processing to address the complex challenges faced by individuals with autism. Clinical Trial Registration: Clinicaltrials.gov identifier NCT04936048.

The Earlier, the Better? An In-Depth Interview Study on the Ethics of Early Detection with Parents of Children at an Elevated Likelihood for Autism

Autism is increasingly viewed as an expression of neurodiversity deserving accommodation, rather than merely as a disorder in need of remediation or even prevention. This reconceptualization has inspired calls to broaden the ethical debate on early autism care beyond matters of efficient screenings and effective interventions. We conducted 14 in-depth interviews with 26 parents of infants at an increased likelihood for autism (siblings, preterms and children with persistent feeding difficulties) to understand which benefits and risks these parents see for the implementation of a systematic, early autism detection program in our region. With this study, we aim to contribute empirically to the ethical debate on good and just early autism care in the age of neurodiversity. Data were analyzed according to the QUAGOL-methodology. Three main themes emerged from our analysis. In their evaluation of early autism detection, parents discussed how a diagnosis helps gain a different perspective fostering understanding and recognition for both child and parent. Second, a diagnosis supports parents in adjusting their parenting practices, to justify this deviation from "normal" parenting and to strive for such adjusted environments beyond the nuclear family. Third, an autism diagnosis induces ambiguities parents need to navigate, involving questions on whether and when to mobilize the diagnostic label and which language to use to talk about autism. We discuss the complex position of parents of a (potentially) autistic child in terms of moving back and forth across the ab/normal binary and describe implications for the ethical debate on early autism detection.

Autism Caregiver Coaching in Africa (ACACIA): Protocol for a type 1-hybrid effectiveness-implementation trial

Background

While early autism intervention can significantly improve outcomes, gaps in implementation exist globally. These gaps are clearest in Africa, where forty percent of the world's children will live by 2050. Task-sharing early intervention to non-specialists is a key implementation strategy, given the lack of specialists in Africa. Naturalistic Developmental Behavioral Interventions (NDBI) are a class of early autism intervention that can be delivered by caregivers. As a foundational step to address the early autism intervention gap, we adapted a non-specialist delivered caregiver coaching NDBI for the South African context, and pre-piloted this cascaded task-sharing approach in an existing system of care.

Objectives

First, we will test the effectiveness of the caregiver coaching NDBI compared to usual care. Second, we will describe coaching implementation factors within the Western Cape Department of Education in South Africa.

Methods

This is a type 1 effectiveness-implementation hybrid design; assessor-blinded, group randomized controlled trial. Participants include 150 autistic children (18-72 months) and their caregivers who live in Cape Town, South Africa, and those involved in intervention implementation. Early Childhood Development practitioners, employed by the Department of Education, will deliver 12, one hour, coaching sessions to the intervention group. The control group will receive usual care. Distal co-primary outcomes include the Communication Domain Standard Score (Vineland Adaptive Behavior Scales, Third Edition) and the Language and Communication Developmental Quotient (Griffiths Scales of Child Development, Third Edition). Proximal secondary outcome include caregiver strategies measured by the sum of five items from the Joint Engagement Rating Inventory. We will describe key implementation determinants.

Results

Participant enrolment started in April 2023. Estimated primary completion date is March 2027.

Conclusion

The ACACIA trial will determine whether a cascaded task-sharing intervention delivered in an educational setting leads to meaningful improvements in communication abilities of autistic children, and identify implementation barriers and facilitators.

Addressing the autism mental health crisis: the potential of phenomenology in neurodiversity-affirming clinical practices

The neurodiversity movement has introduced a new era for autism research. Yet, the neurodiversity paradigm and the autism clinic remain largely unconnected. With the present work, we aim to contribute to filling this lacuna by putting forward phenomenology as a foundation for developing neurodiversity-affirming clinical interventions for autism. In the first part of this paper, we highlight that autistic people face a severe mental health crisis. We argue that approaches focused on reducing autistic 'symptoms' are unlikely to solve the problem, as autistic mental health is positively correlated with autism acceptance and perceived quality of support provided, not necessarily with lack of 'symptomatologic severity'. Therefore, the development and dissemination of neurodiversity-affirming clinical interventions is key for addressing the autism mental health crisis. However, therapists and researchers exploring such neurodiversity-affirming practices are faced with two significant challenges. First, they lack concrete methodological principles regarding the incorporation of neurodiversity into clinical work. Second, they need to find ways to acknowledge rightful calls to respect the 'autistic self' within the clinic, while also challenging certain beliefs and behaviors of autistic clients in a manner that is sine qua non for therapy, irrespective of neurotype. In the second part of the paper, we introduce phenomenological psychology as a potential resource for engaging with these challenges in neurodiversity-affirming approaches to psychotherapy. In this vein, we put forward specific directions for adapting cognitive behavioral and interpersonal psychotherapy for autism.

Characterizing Accommodations by Parents of Young Children with Autism: A Mixed Methods Analysis

Symptoms of autism influence families' participation in daily activities, but few studies have broadly explored the types of accommodations caregivers make to their family's routines after their child is diagnosed with autism. The current study used a mixed-methods approach to characterize the rate and types of accommodations made by 171 families and the child and family characteristics that predicted accommodations. Most families (91%) endorsed making accommodations in the past year. Lower income, older child age, marginalized racial/ethnic identity, and higher levels of child problem behavior predicted accommodations in a greater number of domains. Thematic analysis illuminated the types of accommodations caregivers made and their motivation for making these lifestyle adjustments. Findings have important implications for parent-mediated interventions and policy.

Service dogs for autistic children and family system functioning: a constant comparative analysis

Introduction

Service dog placements for autistic children are growing in popularity, yet findings to date are mixed. Moreover, no study to date has examined these placements through the lens of a recognized theoretical model. The purpose of this study is twofold: to explore experiences reported by caretakers of autistic children involved in a service dog program, and to contextualize findings within an established theoretical framework.

Methods

A total of n = 50 caretakers of autistic children (n = 38 with and n = 12 without a service dog) were recruited through the national non-profit service dog provider Canine Companions. Participants completed an online survey through Qualtrics which asked open-ended questions about their experiences, both negative and positive.

Results

Constant comparative analysis identified two high level themes, nested within a family systems approach framework: (1) Enhancing social functioning of the family system unit and (2) Fostering stability and strength within family system subunits. These themes interacted holistically to foster and reinforce family system resilience. Placements led to greater social inclusion for children and their families, acted as a highly individualized intervention, and decreased experiences of judgement and stigma. Perceived as members of the family, service dogs may coregulate with the autistic child and family members and can be a source of joyful connection within the family.

Discussion

Results highlighted the service dog's influence on the entire family (beyond the autistic child). Implications for service dog organizations suggest it may be helpful to account for family-wide impacts throughout the placement process. High standards on the part of provider organizations may minimize negatives, optimizing outcomes for both humans and canines. Ultimately, findings enrich our understanding of service dog interventions for autistic children.

A Comparison of Maternal and Clinician Perception of Communication in Autistic Toddlers

PURPOSE

Parent instruction in communication facilitation strategies for autistic toddlers relies on assumptions that parents interpret child behaviors in alignment with clinician definitions of communication. The purpose of this study was to identify features of child behaviors that are predictive of alignment in identification of child communication between clinical researchers and mothers of young autistic children.

METHOD

Participants were 33 mothers and their autistic children between 18 and 48 months of age. Mothers' and clinical researchers' perceptions of child communication were assessed using a procedure in which mothers and clinical researchers each independently identified child communication in the same ten 1-min video clips of each mother's child. Endorsed communicative acts were coded for the presence of conventional forms (e.g., vocalization) and potentially communicative forms (e.g., body movement). Multilevel binomial regressions, fit with Bayesian inference, were conducted to predict classification of maternal endorsements of child communication based on the presence of conventional and potentially communicative forms as either an aligned act (i.e., act endorsed by mother and clinical researcher as communicative) or a unique maternal endorsement (i.e., act endorsed by mother but not clinical researcher).

RESULTS

The presence of vocalization, verbalization, and gesture each significantly predicted increased likelihood of alignment; the presence of eye contact did not. Although repetitive and sensory behaviors significantly increased the likelihood of unique maternal endorsement, affect shifts and body movements each significantly reduced the likelihood of unique maternal endorsement, and hand activity was not significantly predictive of unique maternal endorsement.

CONCLUSIONS

Misalignment in mothers' and clinical researchers' identification of communication may be in part due to mothers' endorsement of behavioral forms that are not traditionally classified as part of a child's communication repertoire. Findings emphasize the need to work toward designing communication interventions that consider the ways in which clinicians and parents of autistic children each bring their own interpretive frameworks to the early intervention experience.

Differential Effects of a Behavioral Treatment Probe on Social Gaze Behavior in Fragile X Syndrome and Non-Syndromic Autism Spectrum Disorder

The purpose of this study was to examine potential differences in social learning between individuals with fragile X syndrome (FXS), the leading known inherited cause of intellectual disability, and individuals with non-syndromic autism spectrum disorder (ASD). Thirty school-aged males with FXS and 26 age and symptom-matched males with non-syndromic ASD, were administered a behavioral treatment probe designed to improve levels of social gaze during interactions with others. The treatment probe was administered by a trained behavior therapist over two days in our laboratory and included reinforcement of social gaze in two alternating training conditions - looking while listening and looking while speaking. Prior to each session, children in each group were taught progressive muscle relaxation and breathing techniques to counteract potential increased hyperarousal. Measures included the rate of learning in each group during treatment, in addition to levels of social gaze and heart rate obtained during administration of a standardized social conversation task administered prior to and following the treatment probe. Results showed that learning rates obtained during administration of the treatment probe were significantly less steep and less variable for males with FXS compared to males with non-syndromic ASD. Significant improvements in social gaze were also observed for males with FXS during the social conversation task. There was no effect of the treatment probe on heart rate in either group. These data reveal important differences in social learning between the two groups and have implications for early interventions in the two conditions.

Applied Behavior Analysis and the Abolitionist Neurodiversity Critique: An Ethical Analysis

The behavior analytic literature on neurodiversity remains limited. This article aims to begin filling the lacuna. We will introduce the neurodiversity perspective and demonstrate an important congruence between the behavior analytic and neurodiversity perspectives on autism. Despite this congruence, applied behavior analysis is often targeted for criticism by proponents of the neurodiversity perspective. A central concern raises questions about the aims of behavior analytic interventions for clients with autism. Is it appropriate to teach clients with autism to behave as if they were neurotypical? Concerns about the aims of behavior analytic interventions mirror concerns that have been raised about the aims of language education in schools. Drawing on the literature regarding linguistically diverse classrooms, we will critically evaluate the abolitionist neurodiversity critique of ABA. We conclude by considering both concrete and theoretical implications for the ethics of behavior analytic work with autistic clients.

Sex and gender in neurodevelopmental conditions

Health-related conditions often differ qualitatively or quantitatively between individuals of different birth-assigned sexes and gender identities, and/or with different gendered experiences, requiring tailored care. Studying the moderating and mediating effects of sex-related and gender-related factors on impairment, disability, wellbeing and health is of paramount importance especially for neurodivergent individuals, who are diagnosed with neurodevelopmental conditions with uneven sex/gender distributions. Researchers have become aware of the myriad influences that sex-related and gender-related variables have on the manifestations of neurodevelopmental conditions, and contemporary work has begun to investigate the mechanisms through which these effects are mediated. Here we describe topical concepts of sex and gender science, summarize current knowledge, and discuss research and clinical challenges related to autism, attention-deficit/hyperactivity disorder and other neurodevelopmental conditions. We consider sex and gender in the context of epidemiology, behavioural phenotypes, neurobiology, genetics, endocrinology and neighbouring disciplines. The available evidence supports the view that sex and gender are important contributors to the biological and behavioural variability in neurodevelopmental conditions. Methodological caveats such as frequent conflation of sex and gender constructs, inappropriate measurement of these constructs and under-representation of specific demographic groups (for example, female and gender minority individuals and people with intellectual disabilities) limit the translational potential of research so far. Future research and clinical implementation should integrate sex and gender into next-generation diagnostics, mechanistic investigations and support practices.

Autism Spectrum Disorder and auditory sensory alterations: a systematic review on the integrity of cognitive and neuronal functions related to auditory processing

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition with a wide spectrum of symptoms, mainly characterized by social, communication, and cognitive impairments. Latest diagnostic criteria according to DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, 2013) now include sensory issues among the four restricted/repetitive behavior features defined as "hyper- or hypo-reactivity to sensory input or unusual interest in sensory aspects of environment". Here, we review auditory sensory alterations in patients with ASD. Considering the updated diagnostic criteria for ASD, we examined research evidence (2015-2022) of the integrity of the cognitive function in auditory-related tasks, the integrity of the peripheral auditory system, and the integrity of the central nervous system in patients diagnosed with ASD. Taking into account the different approaches and experimental study designs, we reappraise the knowledge on auditory sensory alterations and reflect on how these might be linked with behavior symptomatology in ASD.

A Scoping Review of Behavioral Interventions for Promoting Social Gaze in Individuals with Autism Spectrum Disorder and Other Developmental Disabilities

Background

Individuals diagnosed with autism spectrum disorder (ASD) commonly experience difficulties maintaining social gaze with others during interactions. Although behavioral interventions targeted to promote social gaze in ASD are evident in the literature, to our knowledge, no review of the literature has been conducted to summarize and evaluate the evidence for these interventions.

Methods

We reviewed and summarized behavioral intervention studies designed to promote social gaze in individuals diagnosed with ASD and other developmental disabilities published in English between 1977 and January 2022 using PsychINFO and PubMed databases.

Results

41 studies met the inclusion criteria describing interventions conducted on 608 individuals. A variety of intervention strategies were employed to promote social gaze in these individuals including discrete trial instruction, prompting, modeling, and imitation. Most studies employed single-case research designs and reported successful outcomes, but limited data were available concerning the generalization, maintenance and social validity of these interventions. An increasing number of studies utilized technology-based procedures including computer application gameplay, gaze-contingent eye tracking devices and humanoid robots.

Conclusions

The present review indicates that behavioral interventions can be successfully employed to promote social gaze in individuals with ASD and other developmental disabilities. However, future research is needed to establish the generalization, maintenance and social validity of these interventions. There are also important ethical issues to be addressed given the increasing divide between treatment advocates and proponents of the neurodiversity movement.

An interdisciplinary nationwide complex intervention for lifespan neurodevelopmental service development: Underpinning principles and realist programme theory

Background

People seeking support for neurodevelopmental differences often report waiting too long for assessment and diagnosis, as well as receiving inadequate support in educational and health settings. The National Autism Implementation Team (NAIT) developed a new national improvement programme in Scotland, focusing on assessment, diagnosis, educational inclusion, and professional learning. The NAIT programme was conducted within health and education services across the lifespan for a range of neurodevelopmental differences, including autism, developmental coordination disorder, developmental language disorder, and attention deficit hyperactivity disorder. NAIT included a multidisciplinary team, with the involvement of an expert stakeholder group, clinicians, teachers, and people with lived experience. This study explores how the NAIT programme was planned, delivered, and received over three years.

Design

We performed a retrospective evaluation. We collected data from review of programme documents, consultation with programme leads and consultation with professional stakeholders. A theory-based analysis was completed, drawing on the Medical Research Council Framework for developing and evaluating complex interventions, and realist analysis methods. We developed a programme theory of the contexts (C), mechanisms (M), and outcomes (O) influencing the NAIT programme, based on comparison and synthesis of evidence. A key focus was on identifying the factors that contributed to the successful implementation of NAIT activities across different domains, including practitioner, institutional and macro levels.

Results

On synthesis of the data, we identified the key principles underlying the NAIT programme, the activities and resources utilised by the NAIT team, 16 aspects of context, 13 mechanisms, and 17 outcome areas. Mechanisms and outcomes were grouped at practitioner level, service level and macro level. The programme theory is pertinent to observed practice changes across all stages of referral, diagnosis and support processes within health and education services for neurodivergent children and adults.

Conclusions

This theory-informed evaluation has resulted in a clearer and more replicable programme theory that can be used by others with similar aims. This paper illustrates the value of NAIT, as well as realist and complex interventions methodologies as tools for policymakers, practitioners, and researchers.

Community-guided measurement-based care for autistic youth and adults receiving psychotherapy: A conceptual overview and pilot implementation study of MBC-AUT

LAY ABSTRACT

Autistic youth and adults are more likely to experience psychiatric symptoms (e.g. depression, anxiety) and to use psychiatric services than non-autistic people, yet research on evidence-based approaches to enhance psychiatric care for autistic people is limited. Measurement-based care is an evidence-based approach to psychotherapy that improves outcomes for clients, clinicians, and organizations by routinely administering and evaluating measures to clients. Despite this, research on measurement-based care systems for autistic clients is sparse. To address this gap, we developed an autism-adapted measurement-based care (MBC-AUT) system for and with autistic people and pilot tested the system in an outpatient psychiatry clinic to investigate the preliminary feasibility, acceptability, benefits, and barriers to this system for clients and clinicians. Findings suggested that the MBC-AUT system was a feasible and acceptable system for the first 18 autistic youth, their caregivers, and autistic adults to use the system. In semi-structured interviews, clients and clinicians discussed the benefits of the MBC-AUT system to various therapeutic processes, as well as several important barriers to the use of the system. We offer potential solutions to address these barriers and to reduce client and clinician burden, and propose future directions for this line of research to increase access to more autistic people. As autistic clients continue to seek psychological services amid social landscapes of increasing complexity (e.g. COVID-19 pandemic), efforts to enhance the delivery of psychotherapy for this population are critical.

Toward deeper understanding and wide-scale implementation of naturalistic developmental behavioral interventions

LAY ABSTRACT

Naturalistic Developmental Behavioral Interventions (NDBIs) are a group of early interventions that use a variety of strategies from applied behavioral and developmental sciences. Although Naturalistic Developmental Behavioral Interventions have been demonstrated effective, Naturalistic Developmental Behavioral Interventions are not implemented on a wide scale within early intervention programs for children on the autism spectrum. Potential reasons likely stem from differing theoretical orientations of developmental and behavioral sciences and practitioners' lack training, knowledge, and support for implementing Naturalistic Developmental Behavioral Interventions. In support of efforts to promote wide-scale implementation of Naturalistic Developmental Behavioral Interventions, we (1) clarify their common features, (2) discuss possible misconceptions, and (3) offer reasons why Naturalistic Developmental Behavioral Interventions should be widely implemented. We also provide recommendations to the autism service community, intervention developers, and researchers.

What does it mean for an autism intervention to be evidence-based?

Although there is consensus in the field that individuals on the autism spectrum should receive interventions that are evidence-based, the concept of "evidence-based" is multifaceted and subject to ongoing development and debate. In this commentary, we review historical developments, methodological approaches, as well as areas of controversies and research directions in the establishment of an evidence base for autism intervention. LAY SUMMARY: What does it mean for an autism intervention to be evidence-based? In this commentary, we address this complex issue by examining historical developments, methodological approaches, as well as areas of ongoing debate in the establishment of evidence-based interventions for autism.

Future Prospects for Epigenetics in Autism Spectrum Disorder

Despite decades of investigation into the genetics of autism spectrum disorder (ASD), a current consensus in the field persists that ASD risk is too heterogeneous to be diagnosed by a single set of genetic variants. As such, ASD research has broadened to include assessment of other molecular biomarkers implicated in the condition that may be reflective of environmental exposures or gene by environment interactions. Epigenetic variance, and specifically differential DNA methylation, have emerged as areas of particularly high interest to ASD, as the epigenetic markers from specific chromatin loci collectively can reflect influences of multiple genetic and environmental factors and can also result in differential gene expression patterns. This review examines recent studies of the ASD epigenome, detailing common gene pathways found to be differentially methylated in people with ASD, and considers how these discoveries may inform our understanding of ASD etiology. We also consider future applications of epigenetics in ASD research and clinical practice, focusing on substratification, biomarker development, and experimental preclinical models of ASD that test causality. In combination with other -omics approaches, epigenomics allows an improved conceptualization of the multifactorial nature of ASD, and opens future lines of inquiry for both basic research and clinical practice.

Developmental diversity: Putting the development back into research about developmental conditions

The dominant discourse surrounding neurodevelopmental conditions such as autism and ADHD emphasizes biological explanations. Neurodevelopmental conditions are conceived as different types of brains, the result of different types of genes. This way of thinking is present both in medical research and in clinical practice. Indeed, it is widely acknowledged that the idea of having a biological diagnosis helps people see beyond blame and guilt. It aids acceptance. However, simplistic approaches to biology risks neglecting the experiences and stories of autistic people in favor of finding etiological causes. At the same time, there is growing awareness that risks, functioning, and resilience are not solely defined by genes and brains but have a cultural and experiential component as well. Furthermore, atypical cognitive trajectories are not straightforwardly associated with poor outcomes. In this paper we describe the concept of developmental diversity as an alternative to more categorical approaches to neurodevelopmental conditions. We explore how dynamic models of life offer possibilities to look at neurodevelopmental conditions differently: rather than seeing autistic people as people with fundamental flaws in their genes or software faults in their brains that have to be explained, autism appears as a phenomenon that exists in interaction with the context, as a meaningful reaction to the environment. We explore what it would mean for research to go from a diagnosis-based approach to a developmental diversity approach that will define wellbeing and functioning in a more granular way across developmental trajectories. We argue that this would mean incorporating lived experiences into biological research and going beyond genes-environment dichotomies. Next to yielding a more complete picture on the phenomenon of autism, we describe how an approach that takes developmental diversity as a starting point offers a new way to look at existing challenges of autism research, such as how to deal with the significant overlap between diagnosis. Our hypothesis is that thinking with developmental diversity rather than categorical difference both represents an opportunity for a more inclusive society, and fundamentally can alter the way we perform research. As such, it is in line with requests of neurodiversity and disability movements.