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a broad classification of children’s behaviors and disorders based on their reactions to stressors. Externalizing behaviors and disorders are characterized primarily by actions in the external world, such as acting out, antisocial behavior, hostility, and aggression. Internalizing behaviors and disorders are characterized primarily by processes within the self, such as anxiety, somatization, and depression. See also Child Behavior Checklist. [proposed by U.S. psychologist Thomas M. Achenbach (1940–  )]

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Psychology term of the day

March 2nd 2024

motor speech disorder

motor speech disorder

any of several communication disorders arising from inaccurate production of speech sounds because of lack of strength or coordination of the muscles involved in speaking, as occurs in cerebellar ataxia or Parkinson’s disease.