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dependent personality disorder
Dependent personality disorder (DPD), formerly known as asthenic personality disorder, is a personality disorder that is characterized by a pervasive psychological dependence on other people. This personality disorder is a long-term (chronic) condition in which people depend on others to meet their emotional and physical needs, with only a minority achieving normal levels of independence.
The difference between a 'dependent personality' and a 'dependent personality disorder' is somewhat subjective, which makes diagnosis sensitive to cultural influences such as gender role expectations.
A study in 2012 estimated the heritability of DPD to be between 55% and 72%.
==Epidemiology==
Dependent personality disorder occurs in about 0.6% of the general population. The disorder is diagnosed more often in females than males; however, research suggests that this is largely due to behavioural differences in interviews and self-reporting rather than a difference in prevalence between the sexes.〔http://www.mentalhealth.com/home/dx/dependentpersonality.html〕 A 2004 twin study suggests a heritability of .81 for developing dependent personality disorder. Because of this, there is significant evidence that this disorder runs in families. Children and adolescents with a history of anxiety disorders and physical illnesses are more susceptible to acquiring this disorder.〔 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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