Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Assessment and diagnosis
- Part II Psychopathology and special topics
- 6 The psychopathology of children with intellectual disabilities
- 7 Depression, anxiety and adjustment disorders in people with intellectual disabilities
- 8 Schizophrenia spectrum disorders in people with intellectual disabilities
- 9 Personality disorder
- 10 Dementia and mental ill-health in older people with intellectual disabilities
- 11 People with intellectual disabilities who are at risk of offending
- 12 Behavioural phenotypes: growing understandings of psychiatric disorders in individuals with intellectual disabilities
- 13 Mental health problems in people with autism and related disorders
- 14 Self-injurious behaviour
- 15 Mental health and epilepsy among adults with intellectual disabilities
- 16 Neuroimaging and intellectual disabilities
- Part III Treatment and therapeutic interventions
- Part IV Policy and service systems
- Index
- References
12 - Behavioural phenotypes: growing understandings of psychiatric disorders in individuals with intellectual disabilities
from Part II - Psychopathology and special topics
Published online by Cambridge University Press: 15 December 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Assessment and diagnosis
- Part II Psychopathology and special topics
- 6 The psychopathology of children with intellectual disabilities
- 7 Depression, anxiety and adjustment disorders in people with intellectual disabilities
- 8 Schizophrenia spectrum disorders in people with intellectual disabilities
- 9 Personality disorder
- 10 Dementia and mental ill-health in older people with intellectual disabilities
- 11 People with intellectual disabilities who are at risk of offending
- 12 Behavioural phenotypes: growing understandings of psychiatric disorders in individuals with intellectual disabilities
- 13 Mental health problems in people with autism and related disorders
- 14 Self-injurious behaviour
- 15 Mental health and epilepsy among adults with intellectual disabilities
- 16 Neuroimaging and intellectual disabilities
- Part III Treatment and therapeutic interventions
- Part IV Policy and service systems
- Index
- References
Summary
Introduction
In writing about behavioural phenotypes, we can see just how far the field has come in only a few short years. In the first edition of this volume, published in 1999, we began our chapter with the paradox that geneticists had discovered over 750 different genetic disorders associated with intellectual disabilities (ID), but that behavioural work lagged far behind. We lamented the so-called ‘two cultures’ of behavioural work in ID (Hodapp & Dykens, 1994), noting how researchers who were more biomedically oriented versus more behaviourally oriented rarely intersected one with another.
But much has changed over the past five to ten years. Consider the sheer number of research articles on behaviours of the most prominent genetic disorders of ID. Using computer searches comparing the 1980s to the 1990s, one sees remarkable, almost exponential, increases. From the 1980s to the 1990s, the numbers of behavioural research articles on Williams syndrome increased from ten to 81; on Prader–Willi syndrome from 24 to 86; on fragile X syndrome from 60 to 149. Even in Down syndrome, the sole aetiology featuring a longstanding tradition of behavioural research, the amount of behavioural research almost doubled — from 607 to 1140 articles — over these two decades. The years since 2000 have shown even more pronounced increases, particularly with regards to Williams and Prader–Willi syndromes.
Granted, such progress is uneven, with many more studies performed on Down syndrome than on almost all other syndromes combined.
- Type
- Chapter
- Information
- Psychiatric and Behavioural Disorders in Intellectual and Developmental Disabilities , pp. 202 - 214Publisher: Cambridge University PressPrint publication year: 2007
References
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