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Preliminary evidence from the Childhood Joint Attention Rating Scale (C-JARS; Mundy et al., 2017) suggests symptoms related to diminished joint attention and the spontaneous sharing of experience with others can be assessed with a parent-report measure in children and adolescents with autism. This study was designed to expand on the previous study by examining the validity of both a Social Symptom (SS) and a Prosocial (PS) scale of the C-JARS in a study of school-aged autistic children (n  = 89) with and without co-occurring intellectual disability (ID), as well as an age matched neurotypical sample (n  = 62). Results indicated that both C-JARS scales were sensitive and specific with respect to identifying the diagnostic status of the children. In addition, the PS scale was sensitive to differences in cognitive abilities (IQ) and sex differences in the autism group. These results are consistent with the hypothesis that joint attention and spontaneous sharing of experience symptoms are not only characteristic of preschool children with autism but may also constitute a developmentally continuous dimension of the social phenotype of autism that can be measured in school-aged children.

Background and aims: Due to the COVID-19 pandemic, tele-health has gained popularity for both providing services and delivering assessments to children with disabilities. In this manuscript, we discuss the process of collecting standardized oral language, reading, and writing tele-assessment data with early elementary children with autism spectrum disorder (ASD) and offer preliminary findings related to child and parent engagement and technology issues. Methods: The data presented are from pretest assessments during an efficacy study examining the electronic delivery of a listening comprehension intervention for children with ASD. Pretest sessions included a battery of standardized language, reading, and writing assessments, conducted over Zoom. The authors operationalized and developed a behavioral codebook of three overarching behavioral categories (parent involvement, child disengagement, and technology issues). Researchers coded videos offline to record frequencies of indicated behaviors across participants and assessment subtests. Results: Involvement from parents accounted for the highest number of codes. Children showed some disengagement during assessment sessions. Technology issues were minimal. Behavioral categories appeared overall limited but varied across participants and assessments. Conclusions: Parent involvement behaviors made up approximately two-thirds of the coded behaviors. Child disengagement behaviors made up approximately one-fourth of the coded behaviors, and these behaviors occurred more frequently across many different participants (with lower frequencies but greater coverage across children). Technology problems specific to responding to assessment items were relatively uncommon. Implications: Clear guidelines including assessment preparation, modification of directions, and guidelines for parents who remain present are among the implications discussed. We also provide practical implications for continued successful adapted tele-assessments for children with ASD.

This study evaluates the feasibility and initial efficacy of an 11-week listening comprehension intervention, Building Vocabulary and Early Reading Strategies (BVERS) that was delivered remotely to 14 elementary-aged children with autism spectrum disorder. Children were randomly assigned to one of two groups: BVERS only, or BVERS with a parent instructional component (BVERS + PC). Results indicate that the intervention was feasible to implement. All parents were satisfied with intervention implementation, and 8 of 10 stated that they were satisfied with their child's outcomes following the intervention. Results of a Wilcoxon signed-rank test showed growth in listening comprehension following the intervention, but no growth in narrative retell or vocabulary. There were no group differences in change scores from pre- to post-test.

This study examined whether school-aged autistic children without co-occurring intellectual disabilities (autisticWoID) show similar difficulty on Theory of Mind (ToM) tasks as young autisticWoID children and if these difficulties are related to problems in domain-general aspects of cognition. Eighty-one autisticWoID and 44 neurotypical (NT) children between the ages of 8-16 years participated in this study and were matched on verbal IQ. ToM performance significantly and independently differentiated many, but not all, autisticWoID and NT participants above and beyond the effects of working memory and inferential thinking. However, these cognitive variables did not fully explain difficulties with social cognition in autisticWoID children. These findings have implications for understanding autism, the factors that may impact intervention for social cognition in autism, and the factors that impact the education of autistic children who may struggle in general education classrooms.

This study examined differences in internalizing and externalizing behaviors between school-aged boys and girls diagnosed with autism spectrum disorder (ASD). Eighty-nine children between the ages of 8 and 16 years participated in this study: 17 girls (M = 11.5 years, SD = 2.3) and 72 boys (M = 11.3 years, SD = 2.2). Participants were matched on the Autism Diagnostic Observation Schedule, Second Edition and Full-Scale IQ (FSIQ > 64). The results indicated that, girls had higher reported instances of Bullying, less Anger Control, and poorer Emotional Self-Control than boys on the Behavior Assessment System for Children, Second Edition. Groups did not differ on subscales of the Social Communication Scale. While evidence of increased externalizing behaviors is less common in girls, there is evidence supporting these differing behaviors that warrant further research.

The writing skills of autistic university students have received very little empirical attention. Previous research has suggested that autistic people may struggle with writing, in part, due to challenges with Theory of Mind. However, other research indicates that Theory of Mind difficulties are far from universal in autism, varying across developmental and social contexts. Through a participatory research approach, autistic university students contributed to the current study examining the writing strengths and challenges of autistic (n = 25) and nonautistic (n = 25) university students. Autistic participants demonstrated more advanced writing skills, more perfectionistic attitudes about writing, and heightened nonverbal intelligence relative to nonautistic students. Autistic students did not exhibit reduced Theory of Mind skills. Although heightened nonverbal intelligence and being autistic were both initially predictive of writing quality, autism was no longer associated with writing quality after accounting for nonverbal intelligence. Findings suggest that autistic university students may often have enhanced cognitive and writing skills but may face challenges overcoming perfectionism. This research highlights the value of participatory collaborations with autistic students for identifying strengths that can help autistic students succeed in college. [For the corresponding grantee submission, see ED607171.]

Students with autism spectrum disorder (ASD) often exhibit challenges with reading development. Evidence-based interventions and specialized approaches to reading instruction are currently being implemented across educational contexts for learners with ASD (Machalicek et al., 2008), yet there is limited understanding of how core ASD features may impact effective delivery of instruction and student participation. We begin to address this need by evaluating the reciprocity between instructional talk and student participation within a reading intervention utilizing a scripted language approach that was being piloted on students with ASD. Method: This study used archival video-recorded observations from the beginning of a reading intervention to examine the interactions between 20 students (18 boys, two girls) with ASD (7-11 years old, M = 9.10, SD = 1.74) and their interventionists (n = 7). Lag sequential analysis was used to examine the frequency of student initiations and responses following the interventionists' use of responsive, open-ended, closed-ended, and directive language. Results: Findings describe the types of and illustrate the variability in interactions between students and their interventionists, as well as highlight language categories that are linked to student participation. Conclusions: These data provide a snapshot of the nature and quality of interactions between students with ASD and their interventionists. Findings suggest that delivery of instruction, including the language that interventionists use, may be an important area of focus when evaluating the effectiveness of reading-based practices across educational settings for learners with ASD, even within the confines of highly structured interventions.

Background: Children with autism spectrum disorder (ASD) demonstrate highly variable writing skills. Few studies have examined if engagement during writing assessments may differ for children with ASD and if task engagement is related to their writing assessment performance. This study examined narrative writing and broad task engagement in children with ASD compared to peers with attention-deficit/hyperactivity disorder (ADHD) and typically developing (TD) peers. Method: Sixty children with ASD, 32 children with ADHD, and 29 TD children completed assessments of cognitive skills, symptom severity, and spontaneous narrative writing. Time spent engaged during writing was assessed during the spontaneous narrative writing task. Results: The ASD group performed lowest on text organization and quality scores as well as word production scores while also spending the least time engaged with the writing task. Time spent engaged was most strongly associated with narrative writing scores in the ASD group and explained unique variance in text organization and quality scores and word production scores after controlling for related age, cognitive skills, and symptom severity variables. The ADHD group showed similar associations between time spent engaged and word production scores, and time spent engaged explained unique variance in word production scores. Conclusions: Time spent engaged completing the writing task appeared lowest for the ASD group and may suggest writing task engagement to be a more prominent difficulty area for children with ASD compared to peers with ADHD and TD peers. Implications for better understanding and supporting the writing skills of children with ASD are discussed.

The reading difficulties of individuals with autism spectrum disorders have been established in the literature, with particular attention drawn toward reading comprehension difficulties. Recent papers have highlighted the heterogeneous nature of reading abilities in this population by utilizing statistical methods that allow for investigations of unique reading profiles. This article extends this literature by investigating reading profiles longitudinally, to investigate the stability of reader profiles across time. Latent profile and transition analyses were conducted to establish categorically distinct reading profiles at two time points, 30 months apart. This study also examined whether age and autism symptom severity were related to the profiles at each time point. Finally, transitions between profiles at each time point were identified. Age did not predict profile membership, but there were significant differences in symptom severity that were largely stable over time. Results indicate that heterogeneous reading profiles exist within the autism population, ranging from average reading ability to severe difficulties across different reading subskills. The data from this study demonstrate that reading profiles of children and adolescents with autism spectrum disorders shift when examined across time.

Difficulties with reading development have been well documented in samples of children with autism spectrum disorders. This study utilized a state-level early literacy dataset of kindergarten students educationally diagnosed with autism spectrum disorder (N = 616) to investigate the development of critical early reading skills across the kindergarten year. The study employed latent profile analysis and latent transition analysis to empirically derive profiles of early readers at kindergarten entry and the end of kindergarten. Results demonstrate the heterogenous nature of early reading skills for young school-aged students with autism spectrum disorder. Results have important implications for the early instruction and intervention of early reading for young children with autism spectrum disorder.

High-functioning children with autism spectrum disorders often find writing challenging. These writing difficulties may be specific to autism spectrum disorder or to a more general clinical effect of attention disturbance, as these children are often comorbid for attention-deficit/hyperactivity disorder (ADHD) symptomatology (and children with attention-deficit/hyperactivity disorder often also find writing challenging). To examine this issue, this study investigated the role of attention disturbance on writing in 155 school-age children across four diagnostic groups: high-functioning autism spectrum disorder (HFASD) with lower ADHD symptoms (HFASD-L), HFASD with higher ADHD symptoms (HFASD-H), ADHD symptoms but no autism spectrum disorder symptoms, and typical development. Both HFASD subgroups and the ADHD group displayed lower word production writing scores than the typical development group, but the clinical groups did not differ. The HFASD-H and ADHD groups had significantly lower theme development and text organization writing scores than the typical development group, but the HFASD-L and typical development groups were not significantly different. The findings support prior research reporting writing problems in children with autism spectrum disorder but also suggest that children with HFASD-H may be at greater risk for writing difficulties than children with HFASD-L. Better understanding the role of attention in writing development could advance methods for assessment and intervention for children with high-functioning autism spectrum disorder at risk for writing difficulties.

Background and aimsExtant research indicates that children and adolescents with autism spectrum disorder (ASD) without an intellectual disability (ID) often experience difficulty comprehending written texts that is unexpected in comparison with their cognitive abilities. This study investigated the development of two key skills, narrative and inference abilities, that support higher level text comprehension and their relation to lexical-semantic knowledge, ASD symptomatology, and age. Three questions were addressed: 1.) What was the nature of narrative and inference skill development over time? 2.) What was the relation between narrative or inference development and lexical-semantic knowledge, ASD symptomatology, and age? 3.) Did initial narrative and inferencing skills, and the development of these skills, predict reading comprehension outcomes? Methods: Data from 81 children and adolescents with ASD without ID (FIQ ≥ 75) between the ages of 8-16-years-old at timepoint 1 were collected at 15-month intervals across three timepoints. ASD symptomatology was assessed with the ADOS-2. Standardized narrative retelling, inference, reading comprehension, lexical-semantic knowledge and cognitive assessments were administered. Latent growth curve models were conducted to examine narrative and inference skill development, and conditional growth models were fit to examine the relation between growth trajectories and covariates (lexical-semantic knowledge, ASD symptomatology, age) as well as with the reading comprehension distal outcome.ResultsNarrative retelling skills followed a linear trajectory of growth and were a relative strength in this sample, while inference skills were well below average and declined over time relative to age-normed standard scores. Lexical-semantic knowledge explained significant heterogeneity in initial narrative and inference skills, whereas ASD symptomatology was only related to initial narrative retelling abilities and age was only related to initial inference abilities. Timepoint 3 reading comprehension skill (in the below average range) was significantly explained by initial narrative retelling and inference abilities.ConclusionsThe results of this study indicate that narrative retelling and inference skills are important for successful reading comprehension for individuals with ASD without ID and that lexical-semantic knowledge underpins these skills. Furthermore, the observation that ASD symptom severity was associated with narrative retelling skills is consistent with the hypothesis that problems in narrative reading skills are associated with the autism phenotype. Finally, inference skill was a particular challenge for individuals in this sample, although age was positively associated with better performance on the assessment.Implications: These findings suggest that narrative and inference skills, in addition to lexical-semantic knowledge, are important to target beginning in elementary grades to improve reading comprehension outcomes for children and adolescents with ASD without ID.

The reading difficulties of individuals with autism spectrum disorders have been established in the literature, with particular attention drawn toward reading comprehension difficulties. Recent papers have highlighted the heterogeneous nature of reading abilities in this population by utilizing statistical methods that allow for investigations of unique reading profiles. This article extends this literature by investigating reading profiles longitudinally, to investigate the stability of reader profiles across time. Latent profile and transition analyses were conducted to establish categorically distinct reading profiles at two time points, 30 months apart. This study also examined whether age and autism symptom severity were related to the profiles at each time point. Finally, transitions between profiles at each time point were identified. Age did not predict profile membership, but there were significant differences in symptom severity that were largely stable over time. Results indicate that heterogeneous reading profiles exist within the autism population, ranging from average reading ability to severe difficulties across different reading subskills. The data from this study demonstrate that reading profiles of children and adolescents with autism spectrum disorders shift when examined across time.

Dysgraphia, a specific learning disability, impairs legible and automatic letter production by hand, which can interfere with written composing. The goal of the current study was not to investigate effective methods for teaching self-regulated writing to students with dysgraphia, but rather to investigate their self that is involved in their self-regulated writing. Students with dysgraphia in grades 4 to 9 (17 males; 3 females, M = 139.44 months, SD = 12.15) composed six personal narratives about themselves and their relationships with others. Five indicators of self/self-others, informed by Theory of Mind, were coded in the six personal narratives. They also completed normed measures of self-regulation of attention and of written composing. Correlations identified which coded indicators of self/self-others and which measures of attention regulation were significantly related to the same written composing measure to be used as predictors in multiple regressions. Results showed that coded quality of Text Organization (Self Schema in Personal Story) for "My Life Before the School Years" as first predictor AND either Focused or Switching Attention as second predictor jointly accounted for significant variance and each predictor explained unique variance in writing fluency (timed composing). Implications of findings for educational practice and future research are discussed. [For the corresponding grantee submission, see ED605693.]

This study compared pronoun use in individuals with autism to their typically developing peers via meta-analysis and systematic review of 20 selected articles to examine differences in overall pronoun usage as well as in personal, ambiguous, possessive, reflexive, and clitic pronoun usage. Summary effects indicated significant differences between individuals with autism and their typically developing peers in the use of pronouns overall as well as in ambiguous, clitic, and reflexive pronoun usage, but not in personal and possessive pronoun usage. Results indicate wide variation in the way individuals with autism use pronouns, and individual outcomes appeared to be moderated by multiple factors, including cognitive ability, first language, and overall language development. Implications and recommendations for assessment and intervention practices are discussed.

We examined the use of person- and identity-first language (PFL, IFL) in scholarly writing about autism by reviewing 12,962 journal abstracts from 11 autism research journals (mostly covering the years 2001–2022). We found a preference for PFL (64.68%) over IFL (15.83%) when considering aggregated, within-journal breakdowns (with abstracts using both representing 19.50%). However, when examining language use longitudinally, we observed a general trend toward increasing use of IFL after years of stable trends showing predominant use of PFL. These trends were not consistent across all reviewed journals, as some journals demonstrated preference for either PFL or IFL across all observed years. Notably, we highlight the Journal of Autism and Developmental Disorders as a special case that offers a 51-year perspective (1971–2022); here, IFL was predominant until the 1990s, when PFL became a stable majority, and in the late 2010s, IFL started to increase. Journal differences in aggregate breakdowns and longitudinal trends are discussed in line with recent policy changes, journal submission guidelines, and shifting perspectives in autism research. Implications for writing about autistic individuals and the role that language plays within the broader autism research scholarly community are discussed. There are many ways to refer to an individual who is on the autism spectrum. A recommended approach has been to use person-first language (PFL), such as "person with autism." A different approach is to use identity-first language (IFL), such as "autistic person." Recent studies focused on different groups of people (e.g. autistic self-advocates, parents, and practitioners) show that some groups prefer PFL (practitioners) while others prefer IFL (autistic self-advocates). However, less is known about how researchers use PFL and IFL in academic writing (e.g. studies published in scientific journals) involving autistic research participants. Our study examined 12,962 journal abstracts (short summaries of scientific articles) from 11 academic journals that publish autism research findings. We wanted to know (a) about the use of PFL and IFL across abstracts, and (b) how PFL and IFL use has changed annually over time. We examined data for all journals individually and grouped together. Our findings showed that journal abstracts generally use PFL (65%) with some using either IFL (16%) or both PFL and IFL (20%). However, journals varied, with some showing a clear majority for PFL and a couple for IFL. Examining trends over time across journals showed that while PFL appeared to be the majority for most journals, IFL has steadily increased in the recent few years. Our study helps us understand how autism researchers write about autistic individuals and offers implications for helping researchers intentionally make choices about the language used in their autism research studies. [ABSTRACT FROM AUTHOR]

High-functioning children with autism spectrum disorders often find writing challenging. These writing difficulties may be specific to autism spectrum disorder or to a more general clinical effect of attention disturbance, as these children are often comorbid for attention-deficit/hyperactivity disorder (ADHD) symptomatology (and children with attention-deficit/hyperactivity disorder often also find writing challenging). To examine this issue, this study investigated the role of attention disturbance on writing in 155 school-age children across four diagnostic groups: high-functioning autism spectrum disorder (HFASD) with lower ADHD symptoms (HFASD-L), HFASD with higher ADHD symptoms (HFASD-H), ADHD symptoms but no autism spectrum disorder symptoms, and typical development. Both HFASD subgroups and the ADHD group displayed lower word production writing scores than the typical development group, but the clinical groups did not differ. The HFASD-H and ADHD groups had significantly lower theme development and text organization writing scores than the typical development group, but the HFASD-L and typical development groups were not significantly different. The findings support prior research reporting writing problems in children with autism spectrum disorder but also suggest that children with HFASD-H may be at greater risk for writing difficulties than children with HFASD-L. Better understanding the role of attention in writing development could advance methods for assessment and intervention for children with high-functioning autism spectrum disorder at risk for writing difficulties.

This study examined mathematics achievement in school-aged children with autism spectrum disorder (ASD), symptoms of attention-deficit/hyperactivity disorder (ADHD), or typical development (TD) over a 30-month period and the associations between cognitive and reading abilities with mathematics achievement in children with ASD. Seventy-seven children with ASD without intellectual disability (ASD-WoID), 39 children with ADHD, and 43 children with TD participated in this study. The results revealed that the ASD-WoID and ADHD samples displayed significant and comparable delays in problem solving and calculation abilities. Lower VIQ was related to lower math achievement across all subgroups. The ASD-WoID sample differed from comparison samples in terms of their pattern of mathematical achievement and the role of cognitive abilities in the development of mathematics competence.

Reading and writing are distinct skill areas that influence each other across development. Children with autism spectrum disorder (ASD) are noted to exhibit challenges in both skill areas, though relatively few studies have examined relationships between reading and writing skills. This study adopted a reading-to-writing framework to examine if school-age children differ in their narrative writing performance based on their categorically heterogeneous, empirically derived latent reading profiles. Sixty-four school-age (10-18 years old) children with ASD without co-occurring intellectual or severe communication difficulties completed a battery of reading and writing assessments, and reading profiles were examined using latent profile analysis with narrative writing skills, ASD symptom severity, and age included as auxiliary outcome variables. "Average" readers demonstrated significantly higher narrative writing performance compared to "Below Average/Intact Receptive Vocabulary," "Comprehension Disturbance," and "Global Disturbance" readers. Subgroups of readers with reading difficulties did not significantly differ on writing outcomes. While findings support that stronger readers appeared to be also stronger writers, questions remain about differences in the writing skills of individuals with ASD with specific or broad reading difficulties. Implications for researchers and practitioners are discussed regarding the need for continued examination into the reading and writing abilities of children with ASD.

Many children with autism spectrum disorders (ASD) struggle with reading comprehension. Linguistic comprehension is an important predictor of reading comprehension, especially as children progress through elementary school and later grades. Yet, there is a dearth of research examining longitudinal relations between linguistic comprehensions in school-age children with ASD compared to typically-developing peers (TD). This study compared the developmental trajectories of linguistic and reading comprehension in samples of children with ASD and age-matched TD peers. Both groups were administered measures of linguistic and reading comprehension multiple times over a 30-month period. Latent growth curve modeling demonstrated children with ASD performed at significantly lower levels on both measures at the first timepoint and these deficits persisted across time. Children with ASD exhibited growth in both skills comparable to their TD peers, but this was not sufficient to enable them to eventually achieve at a level similar to the TD group. Due to the wide age range of the sample, age was controlled and displayed significant effects. Findings suggest linguistic comprehension skills are related to reading comprehension in children with ASD, similar to TD peers. Further, intervention in linguistic comprehension skills for children with ASD should begin early and there may be a finite window in which these skills are malleable, in terms of improving reading comprehension skills. Autism Res 2018, 11: 624-635. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY:There is relatively little research concerning reading comprehension development in children with ASD and how they compare to TD peers. This study found children with ASD began at lower achievement levels of linguistic comprehension and reading comprehension than TD peers, but the skills developed at a similar rate. Intervening early and raising initial levels of linguistic and reading comprehension may enable children with ASD to perform similarly to TD peers over time.

Deficits in reading comprehension have been well documented in individuals with autism. Researchers have begun to identify predictors of reading comprehension; we sought to add to this knowledge base by investigating the role of text reading fluency in the prediction of reading comprehension in a sample of individuals with higher functioning autism (HFASD). A comprehensive reading battery was administered to students with HFASD (N = 68) and age- matched typically developing (TD) students (N = 38). Significant differences were detected between the HFASD and TD samples on every reading measure, favoring the TD sample. Structural Equation Models with the HFASD indicates that text reading fluency significantly predicts reading comprehension above and beyond the contribution of other reading variables which have been shown to be significant predictors in previous studies. This finding has important implications for the treatment of reading deficits in individuals with HFASD.

This study investigated literacy learning in students with specific kinds of language challenges at a specific stage of schooling--transition to high school--when the language requirements of the curriculum can be especially challenging. For this exploratory research, a case study approach was adopted that compared 2 adolescent boys both with language learning problems but with 2 contrasting disabilities--autism spectrum disorder (ASD) versus oral and written language learning disability (OWL LD)--just before entry to ninth grade. Three research aims compared participants on (a) learning profiles assessed via a comprehensive psychoeducational assessment battery, (b) change in their learning profiles based on response to instruction to a computerized intervention, and (c) change in their personal narrative compositions and use of taught translation strategies collected during 6 lessons of the computerized intervention. Results indicated that participants demonstrated variable psychoeducational profiles and response to instruction that highlighted similar yet distinct patterns of strengths and weaknesses. Personal narrative writing samples showed that participants demonstrated distinct challenges, but only the participant with ASD showed no response to instruction and produced predominantly off-topic text. Results are discussed in reference to educational applications and future research design implications to understand the writing challenges experienced by children with ASD in reference to children with OWL LD or other specific learning disabilities.

A typically developing student's perceptions of his or her own capabilities (academic self-concept), is predictive of later academic achievement. However, little is known about academic self-concept in youth with autism spectrum disorder (ASD). To understand whether students math self-concept and reading self-concept predicted their performance, 44 school-aged children and adolescents with ASD and 36 age-matched individuals with typical development (TYP) rated their perceived math and reading abilities and were administered standardized achievement measures. Results showed self-concept was predictive of performance in math and reading in the TYP group. For youth with ASD, there was agreement between self-concept and performance only in math. These findings suggest that educators should be cautious when interpreting the self-assessments of reading ability in students with ASD.

Children with autism spectrum disorder (ASD) are at risk for anxiety symptoms. Few anxiety measures are validated for individuals with ASD, and the nature of ASD raises questions about reliability of self-reported anxiety. This study examined longitudinal stability and change of self-reported anxiety in higher functioning youth with ASD (HFASD) compared to youth with symptoms of attention deficit hyperactivity disorder and typical development (TD) using the Multidimensional Anxiety Scale for Children (March, 2012; March et al. "J Am Acad Child Adolesc Psychiatry" 36(4):554-565, 1997). Diagnostic groups demonstrated comparable evidence of stability for most dimensions of anxiety. The HFASD group displayed higher anxiety than both comparison groups, especially physical symptoms. These findings have implications for identification and measurement of anxiety in ASD.