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(p. 261) Attention-Deficit/Hyperactivity Disorder 

(p. 261) Attention-Deficit/Hyperactivity Disorder
Chapter:
(p. 261) Attention-Deficit/Hyperactivity Disorder
Author(s):

Marco Del Giudice

DOI:
10.1093/med-psych/9780190246846.003.0011
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date: 27 October 2020

The chapter discusses attention-deficit/hyperactivity disorder (ADHD), a heterogeneous set of conditions marked by clinically significant levels of hyperactivity, impulsivity, and inattention. After an overview of this disorder, its developmental features, and the main risk factors identified in the epidemiological literature, the chapter critically reviews existing evolutionary models and suggests new directions for research. The final section applies the criteria developed earlier in the book to classify the disorder within the fast-slow-defense (FSD) model and identify functionally distinct subtypes. The author proposes to tentatively distinguish between three subtypes of ADHD: a high-frequency fast spectrum subtype overlapping with conduct/antisocial disorders and psychosis (F-ADHD), a low-frequency slow spectrum subtype overlapping with autism (S-ADHD), and a subtype unrelated to life history variation and characterized by low general intelligence and generalized cognitive impairment.

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