Autism Spectrum Disorder Evaluation Research Articles

Predictors, Parental Views, and Concordance Across Diagnostic Sources of Autism in Male Youth with Fragile X Syndrome: Clinical Best Estimate and Community Diagnoses.

Persons with fragile X syndrome (FXS) with cooccurring autism spectrum disorder (ASD) are at risk for poorer educational, medical, employment, and independent living outcomes. Thus, the identification of ASD in those with FXS is fundamental to ensuring access to appropriate supports to achieve good quality of life. Yet, optimal diagnostic methods and the exact rate of ASD comorbidity remains controversial, and description of ASD identification in the community in FXS has been limited. This study characterized ASD in a sample of 49 male youth with FXS across multiple diagnostic sources: parent-reported community diagnoses, classification derived from ADOS-2 and ADI-R thresholds, and clinical best-estimate classifications from an expert multidisciplinary team. High concordance was found between ADOS-2/ADI-R and clinical best estimate classifications, with both methods supporting ASD in ~ 75% of male youth with FXS. In contrast, 31% had a community diagnosis. Findings supported gross under-identification of ASD in male youth with FXS in community settings; 60% of those who met clinical best estimate criteria for ASD had not received a diagnosis in the community. Moreover, community diagnoses were poorly aligned with the presence of ASD symptoms as perceived by parents and professionals and, unlike clinical best estimate diagnoses, were not associated with cognitive, behavioral, or language features. Findings highlight under-identification of ASD in community settings as a significant barrier to service access for male youth with FXS. Clinical recommendations should emphasize the benefits of seeking a professional ASD evaluation for children with FXS who are noted to display key ASD symptoms.

Impact of State-Level Changes to School-Based Autism Identification Criteria

School and medical settings often use different identification criteria for autism spectrum disorder (ASD), a neurodevelopmental disability affecting social-communication, behavioral patterns, and sensory experiences. Further, individual states may use varied definitions for special education eligibility. On January 1, 2019, the State of Oregon began implementing overhauled statewide criteria and evaluation requirements for ASD special education eligibility that directly align with current medical system criteria specified in the Diagnostic and Statistical Manual, Fifth Edition (DSM-5). Immediately following these changes, and then again 1 year later in January of 2020 (prior to the COVID-19 pandemic), we surveyed school-based practitioners across the state about their ASD evaluation practices as well as their knowledge, training, and beliefs regarding the newly revised standards. Our results indicated that practitioners felt more familiar with and had received better training on the new standards after a full year of implementation and that 58% of practitioners had changed their evaluation procedures in some way. However, 74% of practitioners reported that despite these changes, there was no difference in the number of students being found eligible for an ASD diagnosis, indicating that the real-world impact of the statewide policy change might be more limited than initially believed. Limitations and future directions are discussed.

Autism spectrum disorder symptom expression in individuals with 3q29 deletion syndrome

BackgroundThe 1.6 Mb 3q29 deletion is associated with neurodevelopmental and neuropsychiatric phenotypes, including a 19-fold increased risk for autism spectrum disorder (ASD). Previous work by our team identified elevated social disability in this population via parent-report questionnaires. However, clinical features of ASD in this population have not been explored in detail.MethodsThirty-one individuals with 3q29 deletion syndrome (3q29del, 61.3% male) were evaluated using two gold-standard clinical ASD evaluations: the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2), and the Autism Diagnostic Interview, Revised (ADI-R). Four matched comparators for each subject were ascertained from the National Database for Autism Research. Item-level scores on the ADOS-2 and ADI-R were compared between subjects with 3q29del and matched comparators.ResultsSubjects with 3q29del and no ASD (3q29del-ASD) had greater evidence of social disability compared to typically developing (TD) comparison subjects across the ADOS-2. Subjects with 3q29del and ASD (3q29del + ASD) were largely indistinguishable from non-syndromic ASD (nsASD) subjects on the ADOS-2. 3q29del + ASD performed significantly better on social communication on the ADI-R than nsASD (3q29 + ASD mean = 11.36; nsASD mean = 15.70; p = 0.01), and this was driven by reduced deficits in nonverbal communication (3q29 + ASD mean = 1.73; nsASD mean = 3.63; p = 0.03). 3q29del + ASD reported significantly later age at the first two-word phrase compared to nsASD (3q29del + ASD mean = 43.89 months; nsASD mean = 37.86 months; p = 0.01). However, speech delay was not related to improved nonverbal communication in 3q29del + ASD.LimitationsThere were not enough TD comparators with ADI-R data in NDAR to include in the present analysis. Additionally, our relatively small sample size made it difficult to assess race and ethnicity effects.Conclusions3q29del is associated with significant social disability, irrespective of ASD diagnosis. 3q29del + ASD have similar levels of social disability to nsASD, while 3q29del-ASD have significantly increased social disability compared to TD individuals. However, social communication is reasonably well preserved in 3q29del + ASD relative to nsASD. It is critical that verbal ability and social disability be examined separately in this population to ensure equal access to ASD and social skills evaluations and services.

Primary Care Pediatricians' Perspectives on Autism Care.

We aimed to explore pediatric primary care provider (PCP) experiences and needs around identification and management of autism spectrum disorder (ASD) in toddlers for the purpose of planning improved supports and services for ASD in the medical home. We recruited 28 PCPs to participate in semistructured interviews via Zoom. Probe questions elicited opinions about current screening and referral procedures, experiences obtaining services for patients, effective communication with parents, physician emotional experience when introducing ASD concerns, practice-based sources of disparities, and larger needs for ASD management in the primary care setting. Interview transcripts were analyzed qualitatively by a multispecialty research team for recurrent themes using grounded theory analysis. Participants were 89% women, ranging in clinical experience from <1 year to >27 years, representing 8 diverse pediatric primary care clinic sites at a Midwest academic medical center. Dominant themes relating to PCPs' cognitive, emotional, and environmental experience of caring for patients with ASD were identified, which reflected the trajectory of ASD identification (the parent lens; the "A" word), referral (the autism labyrinth; provider disempowerment; parent activation as a source of inequities), and long-term management (the "black box"; provider emotional investment). Existing literature and results from this study suggest a need for targeted improvements in primary care to: (1) increase PCP capacity and confidence in communicating concerns of ASD with families; (2) refer for timely diagnostic evaluations in trusted and easy-to-navigate care systems; and (3) increase family activation and capacity to follow up on ASD evaluation and treatment services.

Positive behavioral effect of sensory integration intervention in young children with autism spectrum disorder.

Sensory integration occupational therapy (SI-OT) might be useful for autism spectrum disorders (ASD) in younger age, according to Pusponegoro. Previous studies were still limited, especially in younger age. This study evaluated the effect of SI-OT in improving positive behaviors of ASD children aged 2-5 years. Non-randomized controlled trial of SI-OT evaluation, assessed with Vineland Adaptive Behavior Scale-II. A total of 72 subjects were studied. Following SI-OT, communication skills (expressive, receptive), socialization (coping skills), and daily living skills (personal, community) were improved significantly. SI-OT with Ayres theory in 60 min, twice a week for 12 weeks improved positive behaviors. To address the effectivity of sensory integration occupational therapy (SI-OT) in improving positive behaviors of autism spectrum disorders (ASD) children aged 2-5 years. The first study to evaluate evidence of SI-OT in ASD younger than 3 years. Non-randomized controlled trial of SI-OT evaluation of ASD in younger children aged 2-5 years with Vineland Adaptive Behavior Scale-II. SI-OT of Ayres theory in 60 min, twice a week for 12 weeks improves communication domain (expressive, receptive, written) aged 2-4 years, and socialization domain (interpersonal relationship, play, and leisure time) aged 2 years of ASD children.

Children neuropsychological and behavioral scale-revision 2016 in the early detection of autism spectrum disorder.

BackgroundThe Children Neuropsychological and Behavioral Scale-Revision 2016 (CNBS-R2016) is a widely used developmental assessment tool for children aged 0–6 years in China. The communication warning behavior subscale of CNBS-R2016 is used to assess the symptoms of autism spectrum disorder (ASD), and its value of >30 points indicates ASD based on CNBS-R2016. However, we observed that children with relatively lower values were also diagnosed with ASD later on in clinical practice. Thus, this study aimed to identify the suitable cutoff value for ASD screening recommended by the communication warning behavior of CNBS-R2016.Materials and methodsA total of 90 typically developing (TD) children and 316 children with developmental disorders such as ASD, developmental language disorder (DLD), and global developmental delay (GDD; 130 in the ASD group, 100 in the DLD group, and 86 in the GDD group) were enrolled in this study. All subjects were evaluated based on the CNBS-R2016. The newly recommended cutoff value of communication warning behavior for screening ASD was analyzed with receiver operating curves.ResultsChildren in the ASD group presented with lower developmental levels than TD, DLD, and GDD groups in overall developmental quotient assessed by CNBS-R2016. We compared the consistency between the scores of communication warning behavior subscale and Autism Behavior Checklist (ABC), Childhood Autism Rating Scale (CARS), Autism Diagnostic Observation Schedule, second edition (ADOS-2), and clinical diagnosis for the classification of ASD at a value of 30 based on the previously and newly recommended cutoff value of 12 by the CNBS-R2016. The Kappa values between the communication warning behavior and ABC, CARS, ADOS-2, and clinical diagnosis were 0.494, 0.476, 0.137, and 0.529, respectively, with an agreement rate of 76.90%, 76.26%, 52.03%, and 82.27%, respectively, when the cutoff point was 30. The corresponding Kappa values were 0.891, 0.816, 0.613, and 0.844, respectively, and the corresponding agreement rate was 94.62%, 90.82%, 90.54%, and 93.10%, respectively, when the cutoff point was 12.ConclusionThe communication warning behavior subscale of CNBS-R2016 is important for screening ASD. When the communication warning behavior score is 12 points or greater, considerable attention and further comprehensive diagnostic evaluation for ASD are required to achieve the early detection and diagnosis of ASD in children.

Incidence and risk factors for autism spectrum disorder among infants born

This study was aimed to assess the incidence of and risk factors for autism spectrum disorder (ASD) among preterm infants born <29 weeks' gestational age (GA). A retrospective cohort study of infants born <29 weeks' GA admitted to two tertiary neonatal intensive care units (2009 to 2017) and followed ≥18 months corrected age (CA) at a neonatal follow-up clinic. The primary outcome was ASD, diagnosed using standardized testing or provisional diagnosis at ≥18 months CA. Patient data and 18-month CA developmental outcomes were obtained from the local Canadian Neonatal Follow Up Network database and chart review. Stepwise logistic regression assessed factors associated with ASD. Among 300 eligible infants, 26 (8.7%) were diagnosed with confirmed and 21 (7.0%) with provisional ASD for a combined incidence of 15.7% (95% confidence interval [CI] 11.7 to 20.3). The mean follow-up duration was 3.9 ± 1.4 years and the mean age of diagnosis was 3.7 ± 1.5 years. Male sex (adjusted odds ratio [aOR] 4.63, 95% CI 2.12 to 10.10), small for gestational age status (aOR 3.03, 95% CI 1.02 to 9.01), maternal age ≥35 years at delivery (aOR 2.22, 95% CI 1.08 to 4.57) and smoking during pregnancy (aOR 5.67, 95% CI 1.86 to 17.29) were significantly associated with ASD. Among ASD infants with a complete 18-month CA developmental assessment, 46% (19/41) had no neurodevelopmental impairment (Bayley-III<70, deafness, blindness, or cerebral palsy). ASD is common among infants born <29 weeks' GA and possibly associated with identified risk factors. Such findings emphasize the importance of ASD evaluation among infants <29 weeks' GA and for continued reporting of developmental outcomes beyond 18-months of corrected age.

Setting Families Up for Success: A Pilot Study of a Toolkit to Enhance the Autism Spectrum Disorder Diagnostic Evaluation Process.

Families of children with autism spectrum disorder (ASD) face challenges engaging in services following diagnosis. This study: (1) developed and implemented a toolkit to tailor ASD evaluation feedback to families' needs, and (2) evaluated caregiver and provider perceptions of the toolkit. Focus groups with providers (N = 11) informed toolkit development. Seven providers participated in pilot training and implementation. Provider and caregiver toolkit perceptions were assessed using interviews, surveys, and a fidelity checklist. Toolkit strategies reflect focus group themes. Provider and caregiver ratings suggest the initial feasibility, acceptability, and utility of the toolkit. This toolkit may be feasible to implement in community settings and may increase caregiver satisfaction, though further refinements are needed to support service connection.

Clinical Targeted Panel Sequencing Analysis in Clinical Evaluation of Children with Autism Spectrum Disorder in China.

Autism spectrum disorder (ASD) is an early-onset neurodevelopmental disorder in which genetics play a major role. Molecular diagnosis may lead to a more accurate prognosis, improved clinical management, and potential treatment of the condition. Both copy number variations (CNVs) and single nucleotide variations (SNVs) have been reported to contribute to the genetic etiology of ASD. The effectiveness and validity of clinical targeted panel sequencing (CTPS) designed to analyze both CNVs and SNVs can be evaluated in different ASD cohorts. CTPS was performed on 573 patients with the diagnosis of ASD. Medical records of positive CTPS cases were further reviewed and analyzed. Additional medical examinations were performed for a group of selective cases. Positive molecular findings were confirmed by orthogonal methods. The overall positive rate was 19.16% (109/569) in our cohort. About 13.89% (79/569) and 4.40% (25/569) of cases had SNVs only and CNVs only findings, respectively, while 0.9% (5/569) of cases had both SNV and CNV findings. For cases with SNVs findings, the SHANK3 gene has the greatest number of reportable variants, followed by gene MYT1L. Patients with MYT1L variants share common and specific clinical characteristics. We found a child with compound heterozygous SLC26A4 variants had an enlarged vestibular aqueduct syndrome and autistic phenotype. Our results showed that CTPS is an effective molecular diagnostic tool for ASD. Thorough clinical and genetic evaluation of ASD can lead to more accurate diagnosis and better management of the condition.

Provider and Caregiver Satisfaction with Telehealth Evaluation of Autism Spectrum Disorder in Young Children During the COVID-19 Pandemic.

The present study examines provider and caregiver satisfaction with telehealth evaluation of autism spectrum disorder (ASD) in young children during the coronavirus SARS-CoV-2 (COVID-19) pandemic. A telehealth model of ASD evaluation was implemented with 308 children ages 14 to 78 months between May 2020 to June 2021. Data were gathered from electronic health records, autism-specific telehealth diagnostic tools, and post-evaluation surveys. Overall, the majority of providers and caregivers were satisfied with telehealth ASD evaluation. Multiple variables were associated with ratings of satisfaction, differing by providers and caregivers. Findings have important implications for the feasibility and acceptability of telehealth ASD evaluations, in addition to key factors to consider in optimizing and sustaining telehealth evaluations beyond the COVID-19 pandemic.

The co-occurrence of motor and language impairments in children evaluated for autism spectrum disorder. An explorative study from Norway.

BackgroundCurrent research suggest that motor and language impairments are common and closely related in infants with autism spectrum disorder (ASD). In older children, less is known about how these impairments are related to each other. AimsThe current study explored the co-occurrence and potential impact of motor and language impairments in a sample of school-aged children evaluated for ASD by Norwegian specialist health services. MethodsBesides clinical evaluation for ASD, all participants (N = 20, mean age 10.7 (SD = 3.4) years) underwent a standardized test of motor performance (MABC-2), parent report measures of current motor (DCDQ’07), language (CCC-2), and social (SRS) skills, and a caregiver interview on everyday functioning, providing an overall impairment score (DD-CGAS). ResultsThe majority (85%) had motor and/or structural language deficits in addition to their social impairment. All children identified with motor impairment on both measures (39%) also had structural language deficits. Better motor performance was strongly correlated with better structural language skills (r = .618, p = .006). ConclusionsOur findings suggest that co-occurring motor and structural language deficits should be anticipated and assessed when evaluating children for ASD. These deficits may need specific interventions that complement those targeting social skills deficits and other ASD core symptoms.

Neuroimaging Techniques as Descriptive and Diagnostic Tools for Infants at Risk for Autism Spectrum Disorder: A Systematic Review.

Autism Spectrum Disorder (ASD) has traditionally been evaluated and diagnosed via behavioral assessments. However, increasing research suggests that neuroimaging as early as infancy can reliably identify structural and functional differences between autistic and non-autistic brains. The current review provides a systematic overview of imaging approaches used to identify differences between infants at familial risk and without risk and predictive biomarkers. Two primary themes emerged after reviewing the literature: (1) neuroimaging methods can be used to describe structural and functional differences between infants at risk and infants not at risk for ASD (descriptive), and (2) neuroimaging approaches can be used to predict ASD diagnosis among high-risk infants and developmental outcomes beyond infancy (predicting later diagnosis). Combined, the articles highlighted that several neuroimaging studies have identified a variety of neuroanatomical and neurological differences between infants at high and low risk for ASD, and among those who later receive an ASD diagnosis. Incorporating neuroimaging into ASD evaluations alongside traditional behavioral assessments can provide individuals with earlier diagnosis and earlier access to supportive resources.

Assessment of adaptive behavior in autism spectrum disorder

AbstractAdaptive behavior skills are often delayed in autism spectrum disorder (ASD), and these behaviors are significantly associated with poor outcomes in adulthood, especially for autistic individuals that have no cognitive and/or language delays. Therefore, despite having the capacity to be self‐sufficient, the vast majority of autistic adults fail to obtain successful levels of employment, independent living, and interpersonal relationships. Given that more than 60% of autistic individuals have intact cognition and language, adaptive behavior skills need to be appropriately assessed as part of the diagnostic process of ASD, and profiles of delays and deficits need to be accommodated throughout development. This paper provides guidelines for conducting adaptive behavior assessments as part of a comprehensive diagnostic evaluation for ASD, which is now considered standard practice. The history and definition of the construct of adaptive behavior are discussed, and considerations for the administration of various measures, interpretation of results, and translation of findings into intervention strategies are provided.

Standardized administration of the Autism Diagnostic Observation Schedule, Second Edition across treatment settings

AbstractAs rates of autism spectrum disorder (ASD) increase, there is an increasing need for clinicians who offer accurate ASD assessments. The Autism Diagnostic Observation Schedule, Second Edition (ADOS‐2) is a standardized assessment tool that is commonly recommended for use in comprehensive ASD evaluations. However, practitioners do not always follow protocols established by assessment developers. Due to difficulty administering the ADOS‐2, limited access to training for practitioners, and the complexity of ASD symptom presentation, false diagnoses of ASD are common, creating barriers to appropriate services. The present study explores the standardized use of the ADOS‐2 across treatment settings. School and community practitioners involved in ASD assessment were surveyed on their use of the ADOS‐2. Participants (n = 268) included individuals working in an array of settings who performed ASD evaluations. Participant involvement in ASD evaluations, current work setting, types of ADOS‐2 specific training received, and ADOS‐2 module most often used, were explored. These characteristics were compared to use of the ADOS‐2 and likelihood of administering each activity. Findings suggest barriers to the use of and training on the ADOS‐2 for school‐based practitioners compared to those in other settings. Neither setting nor level of ADOS‐2 training impacted administration standardization of the measure for participants.

Supporting practitioners in school‐based evaluations of autism spectrum disorders

AbstractStudents with autism spectrum disorder (ASD) have vastly different educational needs. Although some students with ASD may perform well across subjects within the general education classroom, other students with ASD may need more individualized support outside of the classroom. Historically, ASD assessments in schools have primarily focused on the measurement of cornerstone behaviors of ASD such as deficits in social communication and restricted or repetitive behaviors while underestimating the focus of academic skills even though both factors are required in the evaluation process and for an eligibility classification. The purpose of this article is to provide an overview of academic assessment practices in the schools by highlighting best practices in ASD evaluation, outlining ASD academic profiles and how to identify academic skill deficits, and reviewing the available literature that comes from different formal‐ and function‐based assessment practices that are commonly used in schools today. The authors also discuss how formal‐ and function‐based assessments both serve a purpose and are recommended to be used in conjunction with one another to best demonstrate a student's academic profile. Practitioners are ultimately encouraged to use a multi‐informant, multi‐modal approach when it comes to psychoeducational evaluations for individuals with ASD as it is evident that an individualized approach is essential due to the discrepancy of academic profiles related to this disability category as well as understanding that no measure is a perfect representation of any one skill.

Bayley‐4 performance of very young children with autism, developmental delay, and language impairment

AbstractEarly identification of autism spectrum disorder (ASD) provides the best opportunity for children to receive evidence‐based early intervention. Research indicates that accurate diagnosis can be made as early as the toddler period when an assessment is completed by experienced clinicians. Typical ASD evaluations involve an assessment of developmental skills, such as those measured with the Bayley Scales of Infant and Toddler Development, Fourth Edition. There is limited research, however, on the use of the newest iteration, the Bayley‐4, in discriminating between various developmental disorders and delays. This study compared the performance of three groups of toddlers on the Bayley‐4: (1) ASD (n = 31), (2) developmental delay (n = 26) and (3) problems specific to language (n = 45). Results of a multivariate analysis of variance indicated mean differences existed between the ASD and language groups on the five Bayley‐4 subtests that comprise the Cognitive Motor, and Language Scales; however, logistic regression analysis indicated group membership could not be predicted by performance on the subtests. Our findings suggest children who are identified with ASD at a very young age exhibit global developmental deficits, which may help distinguish them from other groups who exhibit more targeted delays.

Implications of Universal Autism Screening: Perspectives From Culturally Diverse Families With False-Positive Screens.

The American Academy of Pediatrics (AAP) recommends that pediatricians screen all young children for autism spectrum disorder (ASD). However, the US Preventive Services Task Force stated that there is insufficient evidence about the potential harms and benefits of universal ASD screening. To address this gap, we conducted qualitative interviews with caregivers of children who received a false-positive ASD screen to learn about families' perceptions of the harms and benefits of universal ASD screening. Culturally diverse caregivers (N=26) of children with false-positive ASD screens completed qualitative interviews focused on parents' experiences with and recommendations to improve the ASD screening and evaluation process. Interviews were transcribed verbatim, coded, and analyzed using applied thematic analysis. Parents explained that the ASD screening and evaluation process increased their knowledge about child development and substantiated existing concerns. The ASD screening and evaluation process resulted in connecting their child to services, which parents felt led to improvements in their child's delays. Parents endorsed anxiety during wait times for the formal developmental assessment. However, all parents expressed that, if given the option, they would repeat the screening and evaluation process again. Caregivers recommended universal screening for ASD and suggested that screening extend beyond the pediatrician to other settings. From parents' perspectives, the connection to developmental services and increased knowledge of child development that resulted from the false-positive ASD screen outweighed the time-limited emotional distress triggered by a positive ASD screen. Overall, parents' preferences for universal ASD screening align with the AAP's recommendations.

The "Connectivome Theory": A New Model to Understand Autism Spectrum Disorders.

The classical approach to autism spectrum disorders (ASD) is often limited to considering their neuro-functional aspects. However, recent scientific literature has shown that ASDs also affect many body systems and apparatuses such as the immune system, the sensory-motor system, and the gut-brain axis. The connective tissue, a common thread linking all these structures, may have a pathogenetic role in the multisystem involvement of ASD. Depending on its different anatomical sites, the connective tissue performs functions of connection and support; furthermore, it acts as a barrier between the external and internal environments, regulating the interchange between the two and performing immunological surveillance. The connective tissue shares a close relationship with the central nervous system, the musculoskeletal system and the immune system. Alterations in brain connectivity are common to various developmental disorders, including ASD, and for this reason here we put forward the hypothesis that alterations in the physiological activity of microglia could be implicated in the pathogenesis of ASD. Also, muscle hypotonia is likely to clinically correlate with an altered sensoriality and, in fact, discomfort or early muscle fatigue are often reported in ASDs. Furthermore, patients with ASD often suffer from intestinal dysfunctions, malabsorption and leaky gut syndrome, all phenomena that may be linked to reduced intestinal connectivity. In addition, at the cutaneous and subcutaneous levels, ASDs show a greater predisposition to inflammatory events due to the lack of adequate release of anti-inflammatory mediators. Alveolar-capillary dysfunctions have also been observed in ASD, most frequently interstitial inflammations, immune-mediated forms of allergic asthma, and bronchial hyper-reactivity. Therefore, in autism, altered connectivity can result in phenomena of altered sensitivity to environmental stimuli. The following interpretative model, that we define as the “connectivome theory,” considers the alterations in connective elements of common mesodermal origin located in the various organs and apparatuses and entails the evaluation and interpretation of ASDs through also highlighting somatic elements. We believe that this broader approach could be helpful for a more accurate analysis, as it is able to enrich clinical evaluation and define more multidisciplinary and personalized interventions.

CLEAR Autism Diagnostic Evaluation (CADE): Evaluation of Reliability and Validity.

Recent surveillance efforts indicate that 1 in 54 American children meet the criteria for Autism Spectrum Disorder (ASD), making it the fastest growing neurodevelopmental disorder in the U.S. Despite evidence that ASD can be reliably diagnosed as early as 24 months, the median age at ASD diagnosis in 2016 in the U.S. was 51 months. The CLEAR Autism Diagnostic Evaluation (CADE; Willard & Kroncke, 2019), was developed in response to the need to improve, shorten, and standardize the clinical ASD evaluation process. The CADE is a 33-item rating scale designed to be completed by caregivers and clinicians. The current study was conducted to examine the reliability and validity of the CADE using a sample of 191 individuals who received a private evaluation for ASD. Using the client’s evaluation records, clinicians completed the CADE items. The coefficient alpha was .94, which indicates that the items form a scale that has high internal consistency. The CADE total scores were highly correlated with ADOS scores, with r values ranging from .52—.86, and discriminated between those participants with a diagnosis of ASD and those without (p < .001). Receiver operator characteristic (ROC) curve analyses indicated excellent diagnostic accuracy of the CADE total score (ROC area under the curve = .998). Results suggest that the CADE can be used as an efficient and accurate means of evaluating ASD. Limitations and implications for use of the CADE are discussed.

Family Impact During the Time Between Autism Screening and Definitive Diagnosis

Over the past 10years, identification of Autism Spectrum Disorder (ASD) risk has dramatically increased due to the wide-spread implementation of screening programs; yet, there is limited understanding about parent perceptions and experiences during the time period when risk is identified, but prior to receiving a formal diagnosis-a period that can last months to years given the long wait-lists for formal ASD evaluations. The current study aimed to examine parent perceptions of family impact (i.e., the impact their child's behaviors have on the family) between the time of risk-identification and formal diagnosis among 277 children identified as at-risk for ASD through screening positive in primary care. We aimed to compare family impact among those whose child met diagnostic criteria for ASD and those who did not. Parents of children who received a non-ASD diagnosis reported a higher baseline level of family impact (F[1, 274] = 5.82, p = .017); however, perceived difficult child behavior was a stronger predictor of family impact (t[6] = 13.11, p < .001) than later diagnostic group (t[6] = -2.10, p = .037), and child functioning did not predict family impact (t[6] = -0.31, p = .76). These results suggest that in this population, perceived difficult child behavior is a stronger predictor of family impact than later diagnostic category and should be considered an important factor in family support.