Robert Didden is Professor of Intellectual Disabilities, Learning and Behaviour at the Behavioral Science Institute and School of Education of the Radboud University Nijmegen, The Netherlands. He is a psychologist at Trajectum, a center for the treatment of clients with mild to borderline intellectual disabilities and behavioral and psychiatric disorders. Professor Didden is an associate editor for Review Journal of Autism and Developmental Disorders and Journal of Developmental and Physical Disabilities.

Preface xi

Acknowledgments xv

Part I Foundational Issues and Overview 1

1 Evidence-Based Practice: An Introduction 3
Peter Sturmey

2 Adaptive Behavior 29
Peter Sturmey

3 Maladaptive Behavior 62
Peter Sturmey

4 But Is It Worth It? 85
Peter Sturmey

Part II Specific Disorders and Challenging Behaviors 101

5 Aggressive Behavior 103
Olive Healy, Sinéad Lydon, and Clodagh Murray

6 Self-Injurious Behavior 133
Jeff Sigafoos, Mark F. O'Reilly, Giulio E. Lancioni, Russell Lang, and Robert Didden

7 Stereotypic Behavior 163
Timothy R. Vollmer, Amanda B. Bosch, Joel E. Ringdahl, and John T. Rapp

8 Feeding Problems 198
Keith E. Williams, Laura J. Seiverling, and Douglas G. Field

9 Sleep Problems 219
Robert Didden, Wiebe Braam, Anneke Maas, Marcel Smits, Peter Sturmey, Jeff Sigafoos, and Leopold Curfs

10 Anxiety Disorders 235
Peter Sturmey, William R. Lindsay, Tricia Vause, and Nicole Neil

11 Mood Disorders 261
Peter Sturmey and Robert Didden

12 Offenders with Developmental Disabilities 280
Peter Sturmey and Klaus Drieschner

Index 292