 According to psychodynamic accounts, no neurobiological deficits are needed in the explanation of how delusions are formed. Rather, delusions are caused by motivational factors. For instance, delusions of persecution would be developed in order to protect us from low self-esteem and depression, and would be due to the attribution of negative events to some malevolent other rather than to ourselves. The delusion would be part of a defense mechanism. Other delusions, such as Capgras, have also received a psychodynamic interpretation: a young woman believes that her father has been replaced by a stranger looking just like him in order to make her sexual desire for him less socially objectionable. In this way, the delusion would have the function to reduce anxiety and sense of guilt. Psychodynamic accounts of the Capgras delusion have been strongly criticized on the basis of recent findings about the type of brain damage that characterizes Capgras, affecting the face recognition system. For delusions that are supposed to play a defensive or self-enhancing role (e.g., persecution, anosognosia, and erotomania), psychodynamic accounts or hybrid accounts featuring a combination of neurobiological and motivational factors are very popular.