Identifying and measuring the common elements of naturalistic developmental behavioral interventions for autism spectrum disorder: Development of the NDBI-Fi

Comparative effectiveness trial: Modular behavior approach for young autistic children compared to comprehensive behavioral intervention

This 24-week single-blind trial tested a modular approach for young autistic children (MAYAC) that was delivered for fewer hours per week and modified based on child progress and parental input compared to comprehensive behavioral intervention treatment as usual (CBI, TAU). Participants were autistic children, ages 18-60 months of age. MAYAC was initially 5 h of intervention per week, one of which was parent training and the other four direct therapy focusing on social communication and engagement, but additional modules could be added for up to 10 h per week. Comprehensive behavior intervention was delivered for ≥15 h per week. Outcome measures included the Vineland Adaptive Behavior Scales; VABS, the Ohio Autism Clinical Improvement Scale - Autism Severity; OACIS - AS and the Pervasive Developmental Disorder Behavior Inventory - Parent; PDDBI-P. Implementation and parent satisfaction measures were also collected. Fifty-six children, mean age of 34 months, were randomized. Within-group analysis revealed significant improvements from baseline to week 24 for both MAYAC (p < 0.0001) and CBI, TAU (p < 0.0001) on the VABS. The noninferiority test was performed to test between group differences and MAYAC was not inferior to CBI, TAU on the VABS (p = 0.0144). On the OACIS - AS, 48.0% of MAYAC and 45.5% of CBI were treatment responders there were no significant changes on the PDDBI-P, for either group. Treatment fidelity was high for both groups (>95%) as was parent satisfaction. Findings from this small trial are promising and suggest MAYAC may be an alternative for some young autistic children and their families to CBI, TAU.

Study Protocol for a Cluster, Randomized, Controlled Community Effectiveness Trial of the Early Start Denver Model (ESDM) Compared to Community Early Behavioral Intervention (EBI) in Community Programs serving Young Autistic Children: Partnering for Autism: Learning more to improve Services (PALMS)

BACKGROUND

The rising number of children identified with autism has led to exponential growth in for-profit applied behavior analysis (ABA) agencies and the use of highly structured approaches that may not be developmentally appropriate for young children. Multiple clinical trials support naturalistic developmental behavior interventions (NDBIs) that integrate ABA and developmental science and are considered best practices for young autistic children. The Early Start Denver Model (ESDM) is a comprehensive NDBI shown to improve social communication outcomes for young autistic children in several controlled efficacy studies. However, effectiveness data regarding NDBI use in community-based agencies are limited.

METHODS

This study uses a community-partnered approach to test the effectiveness of ESDM compared to usual early behavioral intervention (EBI) for improving social communication and language in autistic children served by community agencies. This is a hybrid type 1 cluster-randomized controlled trial with 2 conditions: ESDM and EBI. In the intervention group, supervising providers will receive training in ESDM; in the control group, they will continue EBI as usual. We will enroll and randomize 100 supervisors (50 ESDM, 50 EBI) by region. Each supervisor enrolls 3 families of autistic children under age 5 (n = 300) and accompanying behavior technicians (n = 200). The primary outcome is child language and social communication at 6 and 12 months. Secondary outcomes include child adaptive behavior, caregiver use of ESDM strategies, and provider intervention fidelity. Child social motivation and caregiver fidelity will be tested as mediating variables. ESDM implementation determinants will be explored using mixed methods.

DISCUSSION

This study will contribute novel knowledge on ESDM effectiveness, the variables that mediate and moderate child outcomes, and engagement of its mechanisms in community use. We expect results from this trial to increase community availability of this model and access to high-quality intervention for young autistic children, especially those who depend on publicly funded intervention services. Understanding implementation determinants will aid scale-up of effective models within communities.

TRAIL REGISTRATION

Clinicaltrials.gov identifier number NCT06005285. Registered on August 21, 2023.

PROTOCOL VERSION

Issue date 6 August 2024; Protocol amendment number: 02.

Infant Communication Across the Transition to Walking: Developmental Cascades Among Infant Siblings of Children with Autism

New motor skills can shape how infants communicate with their caregivers. For example, learning to walk allows infants to move faster and farther than they previously could, in turn allowing them to approach their caregivers more frequently to gesture or vocalize. Does the link between walking and communication differ for infants later diagnosed with autism spectrum disorder (ASD), whose communicative and motor development differs from their neurotypically developing peers? We prospectively followed two groups of infants longitudinally during the transition from crawling to walking: (1) N = 25 infants with no family history of ASD; and (2) N = 91 infants with an older sibling with ASD. Fifteen infants were later diagnosed with ASD, and 26 infants showed a language delay (but did not receive an ASD diagnosis). After learning to walk, infants without ASD or language delay showed considerable changes in their communication: They gestured more frequently, and increasingly coordinated their gestures and vocalizations with locomotion (e.g., by approaching a caregiver and showing a toy). Infants with language delay showed similar but attenuated growth in their communication. However, infants later diagnosed with ASD did not display enhanced communication after they began to walk.

Adherence and Opportunity Frequency as Predictors of Communication Outcomes from Pivotal Response Parent Training

PURPOSE

Access to intervention is a barrier for children with autism. As parent-mediated interventions have emerged to address this need, understanding implementation components contributing to child gains is critically important. Existing literature documents relationships between parent treatment adherence and child progress; however, less is understood about components, such as frequency of learning opportunities, which could also affect child outcomes.

METHODS

This study is a secondary analysis of data from a randomized controlled trial evaluating Pivotal Response Treatment group parent training (PRTG) compared to psychoeducation. Linear regression and mediational models were employed to identify potential predictors and mediators of outcome.

RESULTS

PRTG produced large increases in adherence and learning opportunities. In general, greater frequency of learning opportunities and adherence predicted better child outcomes. The best-fitting cross-sectional mediational models indicated at least partial mediational effects, whereby increased learning opportunities mediated the relationship between greater adherence and improved child outcomes.

CONCLUSIONS

This study provides preliminary evidence of how early gains in adherence may support parents to provide more frequent learning opportunities, which, in turn, yield positive effects on child social communication. Future large-scale research, with greater granularity of measurement, is needed to further understand the temporal relationships between these variables.

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.

Comparison of the efficacy of parent-mediated NDBIs on developmental skills in children with ASD and fidelity in parents: a systematic review and network meta-analysis

BACKGROUND

Recently, studies on behavioral interventions for autism have gained popularity. Naturalistic Developmental Behavior Interventions (NDBIs) are among the most effective, evidence-based, and widely used behavior interventions for autism. However, no research has been conducted on which of the several NDBI methods is most effective for parents and children with autism spectrum disorders. Therefore, we conducted a network meta-analysis to compare the specific effects of each type of parental-mediated NDBI on children's developmental skills and parent fidelity.

METHODS

PubMed, Embase, Cochrane Library, Medline, Web of Science, China National Knowledge Infrastructure (CNKI), CINAHL, and Wanfang databases were searched from inception to August 30, 2023. A total of 32 randomized controlled trial studies that examined the efficacy of different NDBIs were included.

RESULTS

Parents of children with ASD who received Pivotal Response Treatment (PRT) reported significant improvements in their children's social skills (SUCRA, 74.1%), language skills (SUCRA, 88.3%), and parenting fidelity (SUCRA, 99.5%). Moreover, parents who received Early Start Denver Model (ESDM) reported significant improvements in their children's language (SMD = 0.41, 95% CI: 0.04, 0.79) and motor skills (SMD = 0.44, 95% CI: 0.09, 0.79). In terms of the efficacy of improving parent fidelity, the results showed that the Improving Parents as Communication Teachers (ImPACT) intervention significantly improved parent fidelity when compared with the treatment-as-usual group (TAU) (SMD = 0.90, 95% CI: 0.39, 1.42) and the parental education intervention (PEI) (SMD = 1.10, 95% CI:0.28, 1.91).There was a difference in parent fidelity among parents who received PRT(SMD = 3.53, 95% CI: 2.26, 4.79) or ESDM(SMD = 1.42, 95% CI: 0.76, 2.09) training compared with PEI.

CONCLUSION

In conclusion, this study revealed that parents can achieve high fidelity with the ImPACT intervention, and it can serve as an early first step for children newly diagnosed with ASD. It also showed that parent-mediated ESDM is effective in improving language and motor skills for children with ASD and can be used as part of the second stage of parent training. Parent-mediated PRT can also be used as a third stage of parent training with sufficient training intensity to further improve language, social, and motor skills.

Family-Centric Applied Behavior Analysis Facilitates Improved Treatment Utilization and Outcomes

Background/Objective: Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by lifelong impacts on functional social and daily living skills, and restricted, repetitive behaviors (RRBs). Applied behavior analysis (ABA), the gold-standard treatment for ASD, has been extensively validated. ABA access is hindered by limited availability of qualified professionals and logistical and financial barriers. Scientifically validated, parent-led ABA can fill the accessibility gap by overcoming treatment barriers. This retrospective cohort study examines how our ABA treatment model, utilizing parent behavior technicians (pBTs) to deliver ABA, impacts adaptive behaviors and interfering behaviors (IBs) in a cohort of children on the autism spectrum with varying ASD severity levels, and with or without clinically significant IBs. Methods: Clinical outcomes of 36 patients ages 3-15 years were assessed using longitudinal changes in Vineland-3 after 3+ months of pBT-delivered ABA treatment. Results: Within the pBT model, our patients demonstrated clinically significant improvements in Vineland-3 Composite, domain, and subdomain scores, and utilization was higher in severe ASD. pBTs utilized more prescribed ABA when children initiated treatment with clinically significant IBs, and these children also showed greater gains in their Composite scores. Study limitations include sample size, inter-rater reliability, potential assessment metric bias and schedule variability, and confounding intrinsic or extrinsic factors. Conclusion: Overall, our pBT model facilitated high treatment utilization and showed robust effectiveness, achieving improved adaptive behaviors and reduced IBs when compared to conventional ABA delivery. The pBT model is a strong contender to fill the widening treatment accessibility gap and represents a powerful tool for addressing systemic problems in ABA treatment delivery.

Naturalistic Developmental Behavioral Interventions for Developmental Language Disorder

PURPOSE

Naturalistic-developmental-behavioral interventions (NDBIs) are a widely accepted and validated approach for treating language-related symptoms in autism spectrum disorder, including deficits in vocabulary, social skills, and grammar. The purpose of this article is to define the elements naturalistic, developmental, and behavioral as applied to children with developmental language disorder (DLD) and to provide an example of how this type of intervention can be implemented to teach vocabulary and test cross-modal generalization between expressive and receptive modalities.

METHOD

A vocabulary intervention using hybrid NDBI methods (storybook reading and conversational recast interaction) was provided to three participants with DLD using a single-case design.

RESULTS

The results indicated that all participants successfully learned receptive and expressive vocabulary targets with extensive cross-modal generalization. However, generalization was limited in some of the participants.

CONCLUSIONS

This article provided definitions of key elements of NDBI (naturalistic, developmental, and behavioral) including a rationale for extending NDBI procedures to language intervention for children with DLD. In addition, a single-case design demonstrated that NDBI can be implemented in DLD and that broadly defined naturalistic-developmental applied behavior analysis techniques are applicable to language interventions for children with language disorders. Moreover, diverse naturalistic and developmental procedures meet the highest standards for evidence-based practice to treat DLD.

Social interaction links active musical rhythm engagement and expressive communication in autistic toddlers

Rhythm is implicated in both social and linguistic development. Rhythm perception and production skills are also key vulnerabilities in neurodevelopmental disorders such as autism which impact social communication. However, direct links between musical rhythm engagement and expressive communication in autism is not clearly evident. This absence of a direct connection between rhythm and expressive communication indicates that the mechanism of action between rhythm and expressive communication may recruit other cognitive or developmental factors. We hypothesized that social interactions, including general interpersonal relationships and interactive music-making involving children and caregivers, were a significant such factor, particularly in autism. To test this, we collected data from parents of autistic and nonautistic children 14-36 months of age, including parent reports of their children's rhythmic musical engagement, general social skills, parent-child musical interactions, and expressive communication skills. Path analysis revealed a system of independent, indirect pathways from rhythmic musical engagement to expressive communication via social skills and parent-child musical interactions in autistic toddlers. Such a system implies both that social and musical interactions represent crucial links between rhythm and language and that different kinds of social interactions play parallel, independent roles linking rhythmic musical engagement with expressive communication skills.

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).

Autistic Children's Irritability During Social Communication Assessments

PURPOSE

Accurate measurement of autistic children's social communication is critical for assessing skills, setting intervention goals, evaluating change over time, determining service eligibility, and determining classroom placement. There are various types of assessments, some of which use specific tasks to elicit social communication. Structured tasks may frustrate children, inadvertently elicit irritability, and have a cascading effect on their ability to communicate. To date, no studies have evaluated how differing types of social communication assessments may exacerbate children's irritability and impact assessment scores. We examined the extent to which (a) social communication assessment type (structured vs. naturalistic) impacts autistic children's irritability and (b) child irritability is associated with social communication scores.

METHOD

Autistic toddlers (n = 114, Mage = 33.09 months, SD = 6.15) completed the Communication and Symbolic Behavior Scales (CSBS; structured) and a 10-min play-based mother-child interaction (MCX; naturalistic). Child irritability was scored on both assessments using a global rating scale of 0-15.

RESULTS

Child irritability during the CSBS was significantly higher than during the MCX (V = 4892, p < .001, r = .68). Higher irritability was associated with lower CSBS social communication scores (B = -0.05, p = .03), but not MCX scores (B = 0.04, p = .13; Theil's F = 6.92, p = .009).

CONCLUSIONS

Our findings suggest that the CSBS may pose unique challenges for autistic children, as it led to higher rates of irritability and negatively affected children's social communication scores. Evaluating the association between assessment type and irritability supports the complete characterization of autistic children's experience during assessments and clinicians in obtaining a more representative measure of social communication.

Understanding Internalizing and Externalizing Behaviors in Autistic Toddlers

PURPOSE

The majority of autistic toddlers present with clinically significant levels of internalizing or externalizing behaviors. Despite the prevalence of internalizing and externalizing behaviors in caseloads, the overwhelming majority of speech-language pathologists (SLPs) have not received specialized instruction in how to support children with these behaviors. The purpose of this study was to identify which child and caregiver characteristics are most associated with internalizing and externalizing behaviors in autistic toddlers in order to consider how SLPs may tailor their treatment to better support the individual needs of autistic children.

METHOD

Participants included 109 mothers and their autistic children between 18 and 48 months of age. This study was a secondary analysis of data from a randomized clinical trial. Participants' baseline data included a variety of child (i.e., expressive language, receptive language, restricted and repetitive behavior [RRB], and nonverbal cognition) and caregiver (i.e., self-efficacy and responsiveness) characteristics. Seemingly unrelated regressions were conducted to determine which characteristics were associated with internalizing and externalizing behaviors in autistic toddlers.

RESULTS

Higher RRB scores were associated with both higher internalizing and externalizing behavior scores. A lower nonverbal cognition score was also associated with higher internalizing behavior scores but to a lesser extent than RRB.

CONCLUSION

These findings suggest that SLPs may support internalizing and externalizing behaviors in autistic children by taking RRBs and nonverbal cognition into consideration.

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.

Parent coaching via telerehabilitation for young children with autism spectrum disorder (ASD): study protocol for a randomised controlled trial

BACKGROUND

Early parent-implemented intervention enhances parent-child interaction and improves language skills in children with autism spectrum disorders (ASD). Parent coaching is often delivered as standard care for children with ASD, where parents are taught to apply strategies in their child's play activities and daily routines to achieve the prior stated goals. However, the ability to conduct parent coaching in physical in-clinic sessions is limited by resource constraints such as clinic space and therapist manpower. Furthermore, parents may experience difficulties with the generalisation of intervention strategies taught in the clinic to their natural home environments. In this study, telerehabilitation is evaluated as an alternative platform to deliver parent coaching for parent-implemented interventions to children with ASD in their homes.

METHODS

This parallel-group, randomised, controlled, non-inferiority trial aims to evaluate the effectiveness of parent coaching delivered through video conferencing (telerehabilitation) versus in-clinic (standard care) delivery. Children aged 15 to 48 months (n = 200) who meet the cut-off score for ASD on the Autism Diagnostic Observation Schedule-2 are eligible. Parent-child dyads are randomly assigned to receive parent coaching either through weekly telerehabilitation or standard care. The primary outcome is the child's development as measured by the subscale and composite scores of a standardised developmental assessment. Primary analysis will determine if the lower boundary of the 95% confidence interval for the mean difference in pre-post change between groups exceeds -5 (the non-inferiority margin). Secondary outcomes are the child's adaptive behaviour, parent-child interaction, parental stress, and family quality of life. Outcomes will be measured pre-intervention, midterm, and post-intervention. Secondary analysis will determine if there is any between-group difference for the pre-post change in scores at the 5% significance level using two-sample t-test or Mann-Whitney U test.

DISCUSSION

As a randomised controlled trial of a moderately large scale, this study will contribute to the limited existing literature on the effectiveness of parent coaching via telerehabilitation for early parent-implemented intervention for children with ASD. The results of this study will provide insights on whether telerehabilitation is comparable to conventional in-clinic parent coaching in enhancing parent-child interaction and improving language skills.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05792449. Registered (retrospectively) on 31 March 2023.

Teaching Graduate Students to Translate Nonbehavioral Treatments Into Behavioral Principles

Behavior analytic translations of nonbehavioral treatments were recommended by Brodhead in Behavior Analysis in Practice, 8(1), 70-78 (2015) as part of a decision-making framework for practitioners working on interprofessional treatment teams. Professionals from different disciplines often have overlapping scopes of practice and competence, yet each recommends interventions according to their discipline-specific worldview and training. Nonbehavioral treatment recommendations may be especially challenging for behavior analytic practitioners who are committed to the science of human behavior and who are also ethically obligated to work cooperatively and in the best interest of the client. Learning to translate nonbehavioral treatments into behavior analytic principles and procedures may function as a valuable means of improving professional judgment, thereby promoting evidence-based practice and effective collaboration. Behavioral translations may expose procedures that are, in fact, conceptually systematic, creating more opportunities for behavior analysts to partner in interprofessional care. Using a behavioral skills training package, graduate students of applied behavior analysis were taught to translate nonbehavioral treatments into behavior analytic principles and procedures. All students produced more comprehensive translations following training.

Child-therapist interaction features impact Autism treatment response trajectories

BACKGROUND

Identifying mechanisms of change in Autism treatment may help explain response variability and maximize efficacy. For this, the child-therapist interaction could have a key role as stressed by developmental models of intervention, but still remains under-investigated.

AIMS

The longitudinal study of treatment response trajectories considering both baseline and child-therapist interaction features by means of predictive modeling.

METHODS AND PROCEDURES

N = 25 preschool children were monitored for one year during Naturalistic Developmental Behavioral Intervention. N = 100 video-recorded sessions were annotated with an observational coding system at four time points, to extract quantitative interaction features.

OUTCOMES AND RESULTS

Baseline and interaction variables were combined to predict response trajectories at one year, and achieved the best predictive performance. The baseline developmental gap, therapist's efficacy in child engagement, respecting children's timing after fast behavioral synchronization, and modulating the interplay to prevent child withdrawal emerged as key factors. Further, changes in interaction patterns in the early phase of the intervention were predictive of the overall response to treatment.

CONCLUSIONS AND IMPLICATIONS

Clinical implications are discussed, stressing the importance of promoting emotional self-regulation during intervention and the possible relevance of the first period of intervention for later response.

The Role of Naturalistic Developmental Behavioral Interventions in Early Intervention for Autistic Toddlers: An Observational Study

PURPOSE

Naturalistic developmental behavioral interventions (NDBIs) have demonstrated initial promise in facilitating social communication development for autistic toddlers, but their highly structured protocols may be a barrier toward their use by early intervention (EI) providers who must individualize intervention according to family-centered principles. This study aimed to characterize the extent to which EI speech-language pathologists (SLPs) use NDBI strategies, and the range of skills and behaviors addressed during their EI sessions, to contextualize the role of NDBIs within the scope of needs of families with autistic children in EI.

METHOD

This observational study included 25 families with an autistic toddler and their EI SLP. One home-based session was recorded for each family, and an observational measure was used to describe SLPs' NDBI strategy use. Qualitative content analyses were also used to characterize the strategies SLPs recommended to families, and the child skills and behaviors they discussed.

RESULTS

SLPs did not implement NDBI strategies with high quality, but they implemented developmental NDBI strategies with significantly higher quality than behavioral NDBI strategies. SLPs discussed many strategies and skills across disciplines within the session.

CONCLUSIONS

SLPs may require further training to implement NDBI strategies, but given the breadth and depth of skills addressed during sessions, researchers should investigate and report on the impact of NDBIs on a wider range of communication skills and developmental domains. This will facilitate clinical decision making and make these interventions better aligned with family-centered EI principles.

SUPPLEMENTAL MATERIAL

https://doi.org/10.23641/asha.21834480.

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.

Balancing Fidelity and Flexibility: Usual Care for Young Children With an Increased Likelihood of Having Autism Spectrum Disorder Within an Early Intervention System

Naturalistic developmental behavioral interventions (NDBIs) are evidence-based interventions for young children with autism spectrum disorder. There has been growing interest in implementing manualized NDBIs within the early intervention (EI) system without a clear understanding of how these programs and the broader strategies encompassed within them are already used by EI providers. This study examined the use of manualized NDBI programs and broader NDBI strategies within an EI system and factors that impacted their use. Eighty-eight EI providers completed a measure of NDBI program and strategy use. Thirty-three providers participated in a supplemental focus group or interview. Overall, providers described using broader NDBI strategies and the need to adapt manualized NDBI programs. Provider-, intervention-, and organization-level factors impacted their use of NDBI programs and strategies.

Revisiting the simplification of adult language input in the context of naturalistic developmental behavioral interventions: A commentary

Naturalistic developmental behavioral interventions (NDBI) are an evidence-based class of early interventions for improving language and social communication skills in autistic children. However, relatively little is known about how individual elements of NDBI support child development. This commentary focuses on one common element across NDBI models: the simplification of adult language input. Advances in developmental science focusing on the length and complexity of adult spoken utterances suggests that natural, grammatical utterances facilitate comprehension and expressive language development in autistic and nonautistic children. Yet, NDBI tend to recommend shorter and simpler adult utterances. We close by describing directions for future research which would inform recommendations around adult language input in NDBI to optimally support child language and communication development.

Early Autism Intervention Components Deliverable by Non-specialists in Low- and Middle-Income Countries: A Scoping Review

Introduction

The past decade has seen key advances in early intervention for autistic children in high-income countries, with most evidence based on specialist delivery of interventions. The care gap seen in low- and middle-income countries (LMIC) remains close to 100%. A key challenge in addressing this care gap concerns the paucity of specialists available to deliver services. Task-sharing provides an important potential solution; there is a need to identify interventions that are suitable for scaled-up delivery through task-sharing in low-resourced settings. We aimed to conduct a scoping review to identify studies which reported autism intervention delivered by non-specialists within LMIC and, using established frameworks, specify intervention components with evidence of successful non-specialist delivery.

Methods

A scoping literature search, conducted within four databases, generated 2,535 articles. Duplicates were removed, followed by screening of titles and abstracts, with 10% double-rated for reliability. 50 full text articles were then screened independently by two raters. Articles were included if studies: (a) were conducted in LMIC; (b) included samples of autistic children (age < 10); (c) evaluated psycho-social interventions delivered by non-specialists; (d) reported child outcomes; and (e) were peer-reviewed full-texts in English. Two established frameworks - @Practicewise and NDBI-Fi framework - were then used to ascertain the commonly delivered components of these interventions.

Results

Two studies met the inclusion criteria. Both studies evaluated parent-mediated interventions delivered by non-specialists in South Asia. Through the two frameworks, we identified elements and techniques that had been delivered successfully by non-specialists.

Conclusion

There is evidence from two acceptability and feasibility trials that non-specialists can be trained to deliver some intervention elements and techniques within parent-mediated interventions, with good fidelity and acceptability and evidence of effectiveness. The review points up the lack of a widespread evidence base in this area and need for further research in low resourced settings, including well-powered trials and mechanistic analyses to identify active ingredients. A focus on the pre-requisites for non-specialist delivery is critical to reduce inequity and provide universal health coverage within resource-constrained health systems.

Towards Robot-Assisted Therapy for Children With Autism—The Ontological Knowledge Models and Reinforcement Learning-Based Algorithms

Robots are more and more present in our lives, particularly in the health sector. In therapeutic centers, some therapists are beginning to explore various tools like video games, Internet exchanges, and robot-assisted therapy. These tools will be at the disposal of these professionals as additional resources that can support them to assist their patients intuitively and remotely. The humanoid robot can capture young children’s attention and then attract the attention of researchers. It can be considered as a play partner and can directly interact with children or without a third party’s presence. It can equally perform repetitive tasks that humans cannot achieve in the same way. Moreover, humanoid robots can assist a therapist by allowing him to teleoperated and interact from a distance. In this context, our research focuses on robot-assisted therapy and introduces a humanoid social robot in a pediatric hospital care unit. That will be performed by analyzing many aspects of the child’s behavior, such as verbal interactions, gestures and facial expressions, etc. Consequently, the robot can reproduce consistent experiences and actions for children with communication capacity restrictions. This work is done by applying a novel approach based on deep learning and reinforcement learning algorithms supported by an ontological knowledge base that contains relevant information and knowledge about patients, screening tests, and therapies. In this study, we realized a humanoid robot that will assist a therapist by equipping the robot NAO: 1) to detect whether a child is autistic or not using a convolutional neural network, 2) to recommend a set of therapies based on a selection algorithm using a correspondence matrix between screening test and therapies, and 2) to assist and monitor autistic children by executing tasks that require those therapies.

Effectiveness of a parent-mediated intervention for toddlers with autism spectrum disorder: Evidence from a large community implementation

LAY ABSTRACT

In an effort to increase access to intervention as early as possible for toddlers with autism spectrum disorder or signs thereof, many researchers have developed interventions that can be delivered by parents in their own homes. These parent-mediated approaches have gained a lot of research attention in recent years and have been found to be helpful in terms of parent and toddler learning. Several studies have used a rigorous research design (a randomized controlled trial) to show that parent-mediated intervention can work under ideal well-controlled conditions. To build on this evidence, we also need to examine whether parent-mediated interventions can be taught well through community service providers and delivered in more "real-world" conditions. This study used a research-community partnership to provide a parent-mediated intervention (called the Social ABCs) to 179 families (mean toddler age was 25 months; ranging from 14 to 34 months). Almost 90% of the families completed the 12-week program and 70% returned for a follow-up assessment 3 months later. Analyses showed that parents learned the strategies that were designed to help them support their toddlers' development. Also, toddlers made gains in their language, communication, and social skills. Importantly, parents' use of the strategies was related to toddlers' skill gains, suggesting that the use of the strategies made a difference for the toddlers. Findings support the use of parent-mediated intervention in this very young age group and suggest that such intervention approaches should be made available for community delivery.

Feasibility of delivering parent-implemented NDBI interventions in low-resource regions: a pilot randomized controlled study

BACKGROUND

This implementation feasibility study was conducted to determine whether an evidence-based parent-implemented distance-learning intervention model for young children at high likelihood of having ASD could be implemented at fidelity by Part C community providers and by parents in low-resource communities.

METHODS

The study used a community-academic partnership model to adapt an evidence-based intervention tested in the current pilot trial involving randomization by agency in four states and enrollment of 35 coaches and 34 parent-family dyads. After baseline data were gathered, providers in the experimental group received 12-15 h of training while control providers received six webinars on early development. Providers delivered 6 months of intervention with children-families, concluding with data collection. Regression analyses were used to model outcomes of the coach behaviors, the parent fidelity ratings, and child outcomes.

RESULTS

A block design model-building approach was used to test the null model followed by the inclusion of group as a predictor, and finally the inclusion of the planned covariates. Model fit was examined using changes in R² and F-statistic. As hypothesized, results demonstrated significant gains in (1) experimental provider fidelity of coaching implementation compared to the control group; and (2) experimental parent fidelity of implementation compared to the control group. There were no significant differences between groups on child developmental scores.

CONCLUSIONS

Even though the experimental parent group averaged less than 30 min of intervention weekly with providers in the 6 months, both providers and parents demonstrated statistically significant gains on the fidelity of implementation scores with moderate effect sizes compared to control groups. Since child changes in parent-mediated models are dependent upon the parents' ability to deliver the intervention, and since parent delivery is dependent upon providers who are coaching the parents, these results demonstrated that two of these three links of the chain were positively affected by the experimental implementation model. However, a lack of significant differences in child group gains suggests that further work is needed on this model. Factors to consider include the amount of contact with the provider, the amount of practice children experience, the amount of contact both providers and parents spend on training materials, and motivational strategies for parents, among others.

TRIAL REGISTRATION

Registry of Efficacy and Effectiveness Studies: #4360, registered 1xx, October, 2020 - Retrospectively registered, https://sreereg.icpsr.umich.edu/sreereg/.

Preemptive interventions for infants and toddlers with a high likelihood for autism: A systematic review and meta-analysis

LAY ABSTRACT

Interventions to address core symptoms for young children on the autism spectrum have a strong and growing evidence base. Adapting and delivering evidence-based interventions to infants and toddlers with a high likelihood for autism is a logical next step. This systematic review and meta-analysis summarize the association between infant and toddler interventions and developmental and family outcomes. Results indicate that these early interventions are effective for improving parent implementation of core strategies, yet the effects do not readily translate to child outcomes. However, key studies demonstrate conditional results that indicate that parent implementation is associated with child outcome. Implications for research and practice toward building adaptive interventions that respond to parent implementation and changing child characteristics are discussed.

A Systematic Review of Play-Based Interventions Targeting the Social Communication Skills of Children with Autism Spectrum Disorder in Educational Contexts

Children with autism spectrum disorder (ASD) experience social communication difficulties which can be compounded by increased social demands and expectations of the school environment. Play offers a unique context for social communication development in educational settings. This systematic review aimed to synthesize play-based interventions for the social communication skills of children with ASD in educational contexts and identified nine studies. Overall, studies in this review provided a promising evidence base for supporting social communication skills through play in education for children with ASD. The review also highlighted gaps in research on play-based interventions for the social communication skills of children with ASD within naturalistic educational settings.

Keeping up with the evidence base: Survey of behavior professionals about Naturalistic Developmental Behavioral Interventions

LAY ABSTRACT

Primary service providers for young children on the autism spectrum and developmentally delayed children use many strategies under the umbrella of applied behavior analysis therapy. The evidence supporting interventions for children on the autism spectrum has changed last decade, and powerful research supports the relative effectiveness of Naturalistic Developmental Behavior Interventions, yet a few professionals serving young children on the autism spectrum receive training in this category of interventions. Board Certified Behavior Analysts and related professionals are the primary service providers for this population. The purpose of this survey study is to describe and understand the knowledge and beliefs that Behavior Analyst Certification Board certificants have around Naturalistic Developmental Behavior Interventions. The survey was completed by 901 respondents. Respondents indicated, on average, little to no knowledge of Naturalistic Developmental Behavior Intervention practices and few believe that these practices are effective or appropriate for the field. Recommendations include increasing training opportunities for related professionals, and changing certification requirements to match the current evidence.

Measuring parent strategy use in early intervention: Reliability and validity of the Naturalistic Developmental Behavioral Intervention Fidelity Rating Scale across strategy types

LAY ABSTRACT

Children with autism spectrum disorder benefit from early intervention to improve social communication, and parent-implemented interventions are a feasible and family-centered way to increase the amount of treatment they receive. For these treatments to be effective, it is important for the parent to implement the strategies as intended. However, measurement of parent strategy use is inconsistent across studies of parent-implemented interventions. This study evaluates the quality of the NDBI-Fi, an efficient measure, compared to a more time-consuming measure that is known to be precise. Videos of parents playing with their children were used to compare these two measurement methods. Results demonstrated that the NDBI-Fi was of good quality: scorers had high levels of agreement, the NDBI-Fi was similar to the more precise measure in rating parents after intervention, it detected changes from before to after intervention, and it detected differences when parents learned different types of intervention strategies. The NDBI-Fi was not as precise as the other measure across all strategies before parents learned intervention. Taken together, the findings of this study support the use of the NDBI-Fi as a high-quality outcome measure.

Using qualitative content analysis to understand the active ingredients of a parent-mediated naturalistic developmental behavioral intervention

LAY ABSTRACT

Although naturalistic developmental behavioral interventions are supported by research for supporting the development of children on the autism spectrum, how they work is not well understood. This study reviewed parent reflection comments in a systematic way to better how one such treatment worked, when delivered by caregivers. Caregivers completed weekly written reflection responses as they learned how to use the treatment techniques. We studied these responses to understand caregiver perspectives on how their children responded to the techniques. The responses were then compared to a theory of how the treatment works. Many responses were consistent with the treatment theory; however, others were not. We found that individual techniques were associated with different child responses, suggesting that general measures of social communication may not measure these specific short-term changes. Our findings point to specific behaviors that may be useful to measure in future research, or useful as indicators of treatment response in clinical practice settings. Overall, qualitative methods may be useful for understanding complex treatment processes.

Quantifying the Child-Therapist Interaction in ASD Intervention: An Observational Coding System

BACKGROUND

Observational research plays an important part in developmental research due to its noninvasiveness. However, it has been hardly applied to investigate efficacy of the child-therapist interaction in the context of naturalistic developmental behavioral interventions (NDBI). In particular, the characteristics of child-therapist interplay are thought to have a significant impact in NDBIs in children with autism spectrum disorder (ASD). Quantitative approaches may help to identify the key features of interaction during therapy and could be translated as instruments to monitor early interventions.

METHODS

n = 24 children with autism spectrum disorder (ASD) were monitored from the time of the diagnosis (T0) and after about one year of early intervention (T1). A novel observational coding system was applied to video recorded sessions of intervention to extract quantitative behavioral descriptors. We explored the coding scheme reliability together with its convergent and predictive validity. Further, we applied computational techniques to investigate changes and associations between interaction profiles and developmental outcomes.

RESULTS

Significant changes in interaction variables emerged with time, suggesting that a favorable outcome is associated with interactions characterized by increased synchrony, better therapist's strategies to successfully engage the child and scaffold longer, more complex and engaging interchanges. Interestingly, data models linked interaction profiles, outcome measures and response trajectories.

CONCLUSION

Current research stresses the need for process measures to understand the hows and the whys of ASD early intervention. Combining observational techniques with computational approaches may help in explaining interindividual variability. Further, it could disclose successful features of interaction associated with better response trajectories or to different ASD behavioral phenotypes that could require specific dyadic modalities.

A SWOT analysis of parent-mediated intervention for children with autism spectrum disorder: Oman as a Regional Model

The prevalence of autism in the Arabian Gulf region is on the rise leading to overstretching of the pre-existing intervention services. The World Health Organization Caregiver Skills Training Program is a novel renovation being studied around the globe to overcome the scarcity of resources, improve autistic children's outcome and empower parents with comparable results to therapist-based models. Recently, Oman achieved great success in advocating for autism and initiated the first screening program for autism in the region. This review aims to use a Strength, Weakness, Opportunities and Threats (SWOT) analysis matrix to investigate the potential for using a parent-mediated intervention program as a supplementary approach to the currently used therapist-based intervention model in the country as an example for Gulf region.