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Summary: Classifying Psychopathology

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Classifying Psychopathology
Categorical and Dimensional Approaches
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Loyola University Chicago

Classifying Psychopathology: Categorical and Dimensional Approaches The classification of mental disorders is a fundamental component to the science and practice of psychopathology (Widiger & Sankis, 2000). Despite this centrality, evidence supporting the distinction between healthy functioning and mental disorders remains disjointed. The Diagnostic and Statistical Manual of Mental Disorders (DSM-5; American Psychiatric Association, 2013) defines a mental disorder in part as “… a syndrome characterized by clinically significant disturbance in an individual’s cognition, emotion regulation, or behavior that reflects a dysfunction …show more content…
A syndromal approach to psychopathology is also viewed as a descriptive approach with significantly limited explanatory power, as the focus of diagnoses relies on symptom presentation rather than underlying causes (Widiger & Trull, 2007). The emphasis placed on symptomatology raises concerns regarding normal and abnormal demarcation, comorbidity, heterogeneity, and cultural factors that are further addressed below (Nathan & Langenbucher, 1999; Widiger & Clark, …show more content…
In addition to presenting challenges to the diagnosis and treatment of individuals with mental disorders, widespread comorbidity represents a weakness of the categorical classification of psychopathology. This raises the question of whether current disorders truly represent distinct clinical entities or are actually arbitrary distinctions blurring underlying mechanisms of dysfunction (Widiger & Trull, 2007). Further, inappropriate diagnostic criteria ultimately impede research investigating the underlying neural mechanisms of mental illness as patient populations are arbitrarily included and excluded, likely distorting results. In example, while only 2-3% of the general population meets criteria for Attention-Deficit Hyperactivity Disorder, studies have found that 20-30% of those individuals with ADHD also meet criteria for anxiety and depressive disorders (Jensen et al.,

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