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Networks and Nosology in Posttraumatic Stress Disorder

Networks and Nosology in Posttraumatic Stress Disorder Opinion EDITORIAL Richard J. McNally, PhD Psychiatric symptoms do not co-occur randomly; some are Dimensional latent variables in psychopathology are likely akin more likely to covary than others. What accounts for such syn- to psychometric g, another construct that does not signify a dromic clustering? One explanation holds that an underly- causally efficacious mechanism operative within an indi- ing categorical disease entity vidual person. is the common cause of the Related article 135 emergence and covariance of The Network Alternative 2,7,8 the symptoms that reflect its Borsboom and colleagues have developed a network model presence. Hence, major depression can be the common cause of psychopathology that differs radically from the traditional of anhedonia, insomnia, and fatigue just as a malignant lung latent categorical and dimensional models. tumor can cause bloody sputum, dyspnea, and chronic According to this perspective, symptoms are constitutive cough. of mental disorders, not reflective of them. Syndromic coher- Another explanation holds that symptoms are reflective ence arises as a consequence of dynamic causal interactions of underlying dimensions such as neuroticism. Despite their among symptoms themselves, not as result of an underlying differences, proponents of both categorical and dimensional disease entity, whether construed categorically or dimension- models http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA Psychiatry American Medical Association

Networks and Nosology in Posttraumatic Stress Disorder

JAMA Psychiatry , Volume 74 (2) – Feb 14, 2017

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Publisher
American Medical Association
Copyright
Copyright 2016 American Medical Association. All Rights Reserved.
ISSN
2168-622X
eISSN
2168-6238
DOI
10.1001/jamapsychiatry.2016.3344
pmid
27973667
Publisher site
See Article on Publisher Site

Abstract

Opinion EDITORIAL Richard J. McNally, PhD Psychiatric symptoms do not co-occur randomly; some are Dimensional latent variables in psychopathology are likely akin more likely to covary than others. What accounts for such syn- to psychometric g, another construct that does not signify a dromic clustering? One explanation holds that an underly- causally efficacious mechanism operative within an indi- ing categorical disease entity vidual person. is the common cause of the Related article 135 emergence and covariance of The Network Alternative 2,7,8 the symptoms that reflect its Borsboom and colleagues have developed a network model presence. Hence, major depression can be the common cause of psychopathology that differs radically from the traditional of anhedonia, insomnia, and fatigue just as a malignant lung latent categorical and dimensional models. tumor can cause bloody sputum, dyspnea, and chronic According to this perspective, symptoms are constitutive cough. of mental disorders, not reflective of them. Syndromic coher- Another explanation holds that symptoms are reflective ence arises as a consequence of dynamic causal interactions of underlying dimensions such as neuroticism. Despite their among symptoms themselves, not as result of an underlying differences, proponents of both categorical and dimensional disease entity, whether construed categorically or dimension- models

Journal

JAMA PsychiatryAmerican Medical Association

Published: Feb 14, 2017

References