Cover

pp.：  1 – 6

Contents

pp.：  6 – 10

Contributors

pp.：  10 – 12

Preface

pp.：  12 – 16

Chapter 1. Mental Retardation in African Countries: Conceptualization, Services, and Research

pp.：  16 – 56

Chapter 2. Aging and Alzheimer Disease in People with Mental Retardation

pp.：  56 – 86

Chapter 3. Characteristics of Older People with Intellectual Disabilities in England

pp.：  86 – 112

Chapter 4. Epidemiological Thinking in Mental Retardation: Issues in Taxonomy and Population Frequency

pp.：  112 – 150

Chapter 5. Use of Data Base Linkage Methodology in Epidemiological Studies of Mental Retardation

pp.：  150 – 178

Chapter 6. Ways of Analyzing the Spontaneous Speech of Children with Mental Retardation: The Value of Cross-Domain Analyses

pp.：  178 – 208

Chapter 7. Behavioral Experimentation in Field Settings: Threats to Validity and Interpretation Problems

pp.：  208 – 234

Index

pp.：  234 – 246

Contents of Previous Volumes

pp.：  246 – 254