Love–hate relationships also develop within a familial context, especially between an adult and one or both of their parents. Love–hate relationships and sometimes complete estrangement between adults and one or both of their parents often indicates poor bonding with either parent in infancy, depressive symptoms of parents, borderline or narcissistic pathology in the adult child, and/or parental alienation in childhood. Alienating parents frequently suffer from Borderline personality disorder or Narcissistic personality disorder. Children who experience parental alienation techniques report a higher prevalence of low self-esteem, low self-sufficiency, insecure attachment styles, and higher levels of depression in adulthood. One of the development tasks for humans is to balance the primary love and hate drives as to tolerate ambivalence toward a loved object. When this task is unsuccessfully accomplished, severe psychopathology can ensue. Individuals with Borderline Personality Disorder (BPD) and Narcissistic Personality Disorder (NPD) often fail to accomplish the task of ambivalence. They are unable to be simultaneously angry at someone they love, without destroying the love (Corradi, 2013). Children are unable to tolerate the ambivalence, and are indoctrinated to choose. Despite feeling love for their alienated parent they let go entirely of the loved object. This creates an occasion for the development of ego defenses in the child referred to as “splitting.”