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Autism Spectrum Disorders


Autism Spectrum Disorders

A Transactional Developmental Perspective
Volume Editor: Amy M. Wetherby Ph.D., CCC-SLP   Author: Barry M. Prizant Ph.D., CCC-SLP   Chapter Authors: Marie E. Anzalone Sc.D., O.T.R., Natacha Akshoomoff Ph.D., Loisa Bennetto Ph.D., Pamelazita Buschbacher, Malinda Carpenter Ph.D., Barbara Coyne Cutler, Barbara Domingue M.Ed., Glen Dunlap Ph.D., Karen A. Erickson Ph.D., Lise K. Fox Ph.D., Stanley I. Greenspan, Catherine Lord Ph.D., Janet McTarnaghan M.Ed., Pat Mirenda Ph.D., BCBA-D, Peter Mundy Ph.D., Susan Risi, Sally J. Rogers Ph.D., Patrick J. Rydell, Adriana L. Schuler Ph.D., Jennifer Stella M.S., Michael Tomasello Ph.D., Diane Twachtman-Cullen Ph.D., CCC-SLP, Serena Wieder Ph.D., G. Gordon Williamson Ph.D., OTR, Pamela J. Wolfberg Ph.D.

ISBN: 978-1-55766-445-7
Pages: 448
Copyright: 2000
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This cross-disciplinary reference offers a thorough overview of the communication, language, social, and behavioral issues characteristic of autism spectrum disorders (ASD). Based on meticulous research of the core areas of ASD—communication, socialization, emotional regulation, and symbolic development—the authors offer practical guidelines for intervention designed for children with autism and their families. In this comprehensive book, speech-language pathologists, clinicians, early interventionists, psychologists, and educators learn how to

  • understand and address the social and communication challenges experienced by children with autism
  • enhance assessment and intervention methods
  • support families in their efforts to facilitate their children's development

Chapters in this volume, written by leading clinical and research authorities in ASD, will allow readers to understand the principles and philosophies behind clinical and educational practices implemented with children with autism. Readers will also encounter guidelines to use when making critical assessment and intervention decisions to create more natural, child-centered supports. All professionals will learn how to improve their educational and developmental supports for young children with autism.

Autism Spectrum Disorders is a part of the Communication and Language Intervention Series
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Series Preface
Editorial Advisory Board
Contributors
Acknowledgments

  1. Introduction to Autism Spectrum Disorders
    Amy M. Wetherby and Barry M. Prizant
PART I: THEORETICAL AND RESEARCH FOUNDATIONS: UNDERSTANDING THE DEVELOPMENTAL CONTEXT OF AUTISM

  1. Diagnosis of Autism Spectrum Disorders in Young Children
    Catherine Lord and Susan Risi
  2. Joint Attention, Cultural Learning, and Language Acquisition: Implications for Children with Autism
    Malinda Carpenter and Michael Tomasello
  3. Joint Attention, Social Orienting, and Communication in Autism
    Peter Mundy and Jennifer Stella
  4. Intersubjectivity in Autism: The Roles of Imitation and Executive Function
    Sally J. Rogers and Loisa Bennetto
  5. Understanding the Nature of Communication and Language Impairments
    Amy M. Wetherby, Barry M. Prizant, and Adriana L. Schuler
  6. Sensory Processing and Motor Performance in Autism Spectrum Disorders
    Marie E. Anzalone and G. Gordon Williamson
  7. Neurological Underpinnings of Autism
    Natacha Akshoomoff
PART II: ASSESSMENT AND INTERVENTION ISSUES

  1. Communication Intervention Issues for Young Children with Autism Spectrum Disorders
    Barry M. Prizant, Amy M. Wetherby, and Patrick J. Rydell
  2. More Able Children with Autism Spectrum Disorders: Sociocommunicative Challenges and Guidelines for Enhancing Abilities
    Diane Twachtman-Cullen
  3. Promoting Peer Play and Socialization: The Art of Scaffolding
    Adriana L. Schuler and Pamela J. Wolfberg
  4. A Developmental Approach to Difficulties in Relating and Communicating in Autistic Spectrum Disorders and Related Syndromes
    Stanley I. Greenspan and Serena Wieder
  5. Understanding and Intervening with Children's Challenging Behavior: A Comprehensive Approach
    Lise Fox, Glen Dunlap, and Pamelazita Buschbacher
  6. Augmentative Communication and Literacy
    Pat Mirenda and Karen A. Erickson
  7. The Experience of Autism in the Lives of Families
    Barbara Domingue, Barbara Cutler, and Janet McTarnaghan
Author Index
Subject Index

Excerpted from chapter 1 of Autism Spectrum Disorders: A Transactional Developmental Perspective, edited by Amy M. Wetherby, Ph.D., & Barry M. Prizant, Ph.D.

Copyright © 2000 by Paul H. Brookes Publishing Co. All rights reserved.

Introduction to Autism Spectrum Disorders

The terms autism spectrum disorders (ASDs) and pervasive developmental disorders (PDDs) currently are used synonymously to refer to a wide spectrum of neurodevelopmental disorders that have three core features: impairments in social interaction, impairments in verbal and nonverbal communication, and restricted and repetitive patterns of behavior (American Psychiatric Association, 1994). Major advances have been made since the 1980s in understanding the social and communication difficulties of children with ASD or PDD. This progress has resulted in a greater emphasis on early sociocommunicative patterns in the diagnostic criteria for the generic category of PDDs, which includes the subcategory of autistic disorder (American Psychiatric Association, 1994). More specifically, the following essential features for autistic disorder compose the diagnostic criteria in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition:

  1. Impairment in social interaction, manifested by impairment in the use of nonverbal behavior, lack of spontaneous sharing, lack of socioemotional reciprocity, and/or failure to develop peer relationships
  2. Impairment in communication, manifested by delay in or lack of development of spoken language and gestures, impairment in the ability to initiate or maintain conversation, repetitive and idiosyncratic use of language, and/or lack of pretend play
  3. Restricted repertoire of activities and interests, manifested in preoccupation with restricted patterns of interest, inflexible adherence to routines, repetitive movements, and/or preoccupation with parts of objects

Because language and communication difficulties are essential features of this syndrome, educators and practitioners need to have current understanding of these characteristics and issues pertaining both to assessment and to intervention programs for children with ASD.

Autism is now understood to be of neurogenic origin and can have a dramatic impact on the family members of individuals with ASD. New treatment strategies are frequently introduced and discussed in the media and the professional literature; however, there is great variability regarding the extent to which treatments address the core characteristics of ASDs. In fact, much disagreement remains as to the nature of the core characteristics as opposed to secondary or frequently observed associated characteristics. Furthermore, most published intervention studies fail to employ meaningful outcome measures that document changes in barriers to learning that are characteristic of ASDs or meaningful lifestyle changes for the individual or family.

This volume provides a theoretical and research foundation for understanding the nature of the communication and language problems experienced by children with ASD and for guiding decision making in educational programming and, in particular, communication assessment and intervention. The first part (Chapters 2 through 8) examines the developmental context of children and their families and explores the underpinnings of ASDs and how these relate to communication and language problems. The second part (Chapters 9 through 15) examines issues pertaining to education and treatment for children with ASD. Because the topic of autism is so broad across the life span, this volume focuses on the first decade of life, spanning infancy, childhood, and elementary school age.

A DEVELOPMENTAL TRANSACTIONAL PERSPECTIVE

The theoretical and research framework underlying this book draws heavily from the transactional model of child development. That is, child development is viewed as a transactional process that involves a developmental interaction vis-à-vis the child and communicative partners (McLean, 1990; McLean & Snyder-McLean, 1978). Developmental outcomes at any point in time are seen as a result of a continuous dynamic interplay among child behavior (which is greatly influenced by neurophysiological variables), caregiver responses to the child's behavior, and environmental variables that may influence both the child and the caregiver (Sameroff, 1987; Sameroff & Chandler, 1975; Sameroff & Fiese, 1990). Over time, when a young child's social behavior can be accurately interpreted or read by a caregiver and the caregiver is able to respond in such a way as to meet the child's needs or to support social exchange, both caregiver and child develop a sense of efficacy (Dunst, Lowe, & Bartholomew, 1990; Goldberg, 1977). A cumulative effect of positive contingent responsiveness is that interactions become more predictable as expectancies and contingencies increase. This perspective emphasizes the reciprocal, bidirectional influence of the child's social environment, the responsiveness of communicative partners, and the child's own developing communicative competence.

A child's emotional and physiological regulation, which underlies the capacity to be "available" for learning and participating actively in a social context, is seen as an essential foundation within the transactional model. Development is therefore influenced by a child's ability to maintain some degree of emotional and physiological regulation and to produce increasingly readable and conventional signals, as well as by a caregiver's ability to respond effectively to the child's signals and to embed reciprocal and mutually satisfying transactions in everyday activities and routines. We believe that the nature of the social, communication, and language impairments in autism can best be understood by reflecting on the acquisition process from a transactional developmental perspective and have invited distinguished researchers and clinicians to contribute toward this end.

CURRENT ISSUES IN COMMUNICATION AND LANGUAGE OF CHILDREN WITH AUTISM

Dawson and Osterling (1997) reviewed eight early intervention programs for preschool children with autism, ranging from intensive, one-to-one discrete trial approaches to programs in inclusive environments using naturalistic procedures. They concluded that the level of success achieved across these programs was fairly similar; these programs generally were effective for about half of the children. Effectiveness was determined based on changes in measures such as IQ scores and classroom placement. They noted that few of these programs documented progress on goals addressing social and communicative aspects of development.

Their conclusions provide important implications for intervention programs and directions for future research. First, no evidence indicates that one program or approach works better than others, and, therefore, caution is warranted in drawing conclusions about intervention efficacy. Second, there is much to be learned about effective programs to enhance social and communication skills in children with autism because little empirical data are available. These findings underscore the need to better understand which specific intervention methods work best to accomplish which goals for which children. We contend that directions for future research, particularly intervention studies, should be rooted in theory and research about the nature of ASDs and of the developmental process.

OVERVIEW OF THIS VOLUME

We have invited authors who represent a range of orientations and perspectives (e.g., behavioral, neurobehavioral, developmental, family systems) to contribute to this volume. This volume will help clinicians and educators gain access to the most current theories and research to better understand children with ASD and be exposed to guidelines for developing innovative intervention approaches to enhance social, communication, and language skills in these children.

Part I of this volume examines the developmental context and explores the underpinnings of ASDs and how these relate to communication and language difficulties. Lord and Risi (Chapter 2) begin with an overview of the diagnostic features of ASDs and the differentiating characteristics of the subcategories. They discuss the importance of the diagnosis with a focus on diagnosis in young children. They compare and contrast research on diagnostic measures based on parent report and observational measures in 2- and 3-year-olds. Implications for earlier and more accurate diagnosis are provided, with an emphasis on changes in developmental characteristics during the preschool years.

Carpenter and Tomasello (Chapter 3) describe the social-pragmatic approach to language acquisition with a focus on the process of cultural learning. They review research on how children acquire language and examine the role of joint attention, the flow of social interaction, and social-cognitive foundational skills. They examine the process of language acquisition in children with autism from a social-pragmatic perspective and discuss how impairments in the foundational skills of joint attention, understanding others' communicative intentions, and role-reversal imitation can explain many other impairments in the language of children with autism.

Mundy and Stella (Chapter 4) examine three prominent models to account for the social communication impairments of autism, the theory of mind (ToM) model, the executive function model, and the social orientation model. They conclude that the social orientation model has the best explanatory power for the developmental progression of autism in that it accounts for the earliest-emerging features of the disorder. They hypothesize that the early social-orienting disturbance may have a negative impact on postnatal brain development and on executive function and ToM development. In discussing implications they highlight the importance of measures of joint attention.

Rogers and Bennetto (Chapter 5) examine the roles of imitation and executive function to account for the deficits in social relatedness; communication; and restricted, repetitive behaviors in autism on the basis of empirical research published since the late 1980s. In reviewing findings on imitation, motor impairments, and dyspraxia in autism, they conclude that there is support for autism-specific impairments on imitative and nonimitative motor tasks. In reviewing findings on executive function, they conclude that there is consistent evidence of impairments on global tasks of executive functions in older and higher-functioning individuals but not in preschoolers. On the basis of Stern's (1985) model of emotional development, they hypothesize that a severe and early deficit in imitation/praxis could impair the physical coordination of social exchanges but argue that the affective system holds clues about the primary impairment of autism.

Wetherby, Prizant, and Schuler (Chapter 6) review research on the nature of communication and language impairments in autism, focusing on the capacities for joint attention and symbol use. They examine research on developmental patterns that reveals how strengths and weaknesses in communication, social-affective, and symbolic abilities cluster in distinct profiles in children with autism. They explore how developmental theory can contribute to a better understanding of the communication patterns in autism and provide implications for earlier diagnosis, meaningful measures of abilities and outcomes, and decisions about intervention efficacy.

Anzalone and Williamson (Chapter 7) present an overview of theories on motor planning and sensory processing in ASDs. They also examine issues of sensory integration dysfunction relative to the variety of ways it may be manifest in children with ASD and its impact on adaptive functioning. Implications for infusing treatment principles into educational programs for children with ASD are discussed, with particular emphasis on changing the environment and incorporating a daily sensory diet to prevent sensory defensiveness and promote self-regulation.

Akshoomoff (Chapter 8) explores the neurological underpinnings of autism. She reviews neuroimaging and autopsy studies and examines two neurodevelopmental models of autism: a complex model involving multiple neural systems and the cerebellum and an attention model. She discusses how early damage to specific neurological sites can lead to the behavioral symptoms of autism and suggests the importance of addressing the speed of shifting attention and the size of the attentional "spotlight" in early intervention programs.

Part II of this volume examines issues pertaining to communication and language in the education and intervention for children with ASD. Prizant, Wetherby, and Rydell (Chapter 9) begin with a historical perspective on approaches to enhancing language and communication abilities of children with ASD. They provide a critical analysis of a continuum of approaches ranging from traditional behavioral to developmental, social-pragmatic approaches, including middle-ground "hybrid" approaches that draw from both behavioral and developmental research and educational traditions. They conclude by describing an evolving model for establishing therapeutic priorities that focuses on capacities in communication and emotional regulation and for developing the requisite transactional supports (i.e., family members, peers, environmental supports) necessary to optimally enhance children's development.

Twachtman-Cullen (Chapter 10) describes the specific sociocommunicative challenges faced by higher functioning children with ASD, including children with a diagnosis of Asperger syndrome. She explores these challenges in reference to theories on information processing and social-cognitive constructs such as ToM. Guidelines for enhancing abilities also are addressed with attention given to the complex and often subtle nature of the problems experienced by these children and the related challenges in education and communication enhancement.

Schuler and Wolfberg (Chapter 11) provide an overview of theories and research on patterns of play development in children with ASD. Particular attention is given to aspects of social play and how such impairments affect social and language development. The authors present guidelines for promoting play development within a social inclusionary context based on their extensive clinical and research experience on "integrated play groups" for children with ASD.

Greenspan and Wieder (Chapter 12) discuss their functional approach, in which a child's developmental profile is examined to capture the unique features of processing strengths and weaknesses, which orients the clinician toward the proper intervention plan. An emphasis is placed on understanding core emotional functional capacities as they relate to and support many aspects of a child's development. They then describe the underpinnings of their Developmental, Individualized, Relationship-Based Intervention (DIR) model to enhancing social and emotional development of children with ASD, with practical suggestions and examples for implementing the "floor time" approach.

Fox, Dunlap, and Buschbacher (Chapter 13) offer a way to understand the challenging behavior of children with autism and recognize the critical role of the family context. They describe positive behavioral support, which is a process for understanding the purposes of challenging behavior and developing a plan of support that promotes the development of new skills while reducing the need for and occurrence of the behavior. This approach is rooted in research and theory on the communicative purpose of challenging behavior, which is reviewed in this chapter. They offer a lucid description of the functional assessment process, including gathering information, formulating hypotheses about the function of the behavior, and developing a behavioral support plan.

Mirenda and Erickson (Chapter 14) provide a comprehensive review of the current research literature pertaining to augmentative and alternative communication (AAC) and literacy issues for children with ASD. Implementation of AAC and literacy strategies is discussed in relation to the often-observed visual processing strengths as well as sociocommunicative impairments of children with ASD. Guidelines for decision making in selecting communication systems and fostering literacy skills are presented.

Domingue, Cutler, and McTarnaghan (Chapter 15) consider the process of coping and adapting among families of children with ASD, giving particular emphasis to the experience of families from the family's perspective. The first two authors share their unique insights from the perspective of being both professionals and parents. Suggestions for incorporating family-centered practices of support, assessment, and intervention are presented, with specific justification why working within a family-centered model is essential for children with ASD and their families.

The common bond shared by all of the authors is the understanding that children with ASD and their families are uniquely individual and that there is no single explanation that accounts for the developmental profiles and challenges of all of the children. Thus, there is no single intervention approach or treatment modality that can address the varied needs of all children and their families.

CONCLUSIONS

Clinicians, educators, and parents will find a wealth of information in this volume that will enhance their understanding of children with ASD. This information can then be applied to supporting the development of specific children using individualized approaches, which are so essential to addressing the unique needs of each child. Our hope is that this volume also provides direction for researchers as well as practitioners to further explore specific topics and offers decision-making guidelines and innovative strategies that can be used in developing comprehensive approaches for children with ASD. The clinician/educator as "scientist" will need to explore and document the effectiveness of specific intervention procedures with particular children.

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