explain the key strengths and limitations of the psychiatric classification system
In the current DSM categorical , diagnostic system, each personality disorder is thought to represent a separate, distinct category each with its own distinctive and sharply drawn boundaries that do not overlap with other categories. [ In categorical terms, personality disorders are like an ordinary light switch: the switch is either on, or it is off; it cannot be "somewhat on" or "somewhat
off." In contrast, a dimensional approach is more like a dimmer light switch that can in fact, be "somewhat on" and "somewhat off." Pregnancy is a good example of a diagnosis where it makes good sense to think in categorical terms: one is either pregnant, or one is not. It is not possible to be "somewhat pregnant." But personality disorders do not represent conditions that are as absolute as pregnancy. ]
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