Parental alienation is the process, and the result, of the psychological manipulation of a child into showing unwarranted fear, disrespect or hostility towards a parent or other family members. It is a distinctive and widespread form of psychological abuse and family violence—towards both the child and the rejected family members—that occurs almost exclusively in association with family separation or divorce (particularly where legal action is involved) and that undermines core principles of both the Universal Declaration of Human Rights and the United Nations Convention on the Rights of the Child. Most commonly, the primary cause is a parent wishing to exclude another parent from the life of their child, but other family members or friends, as well as professionals involved with the family (including psychologists, lawyers and judges), may contribute significantly to the process. It often leads to the long-term, or even permanent, estrangement of a child from one parent and other family members and, as a particularly adverse childhood experience, results in significantly increased risks of both mental and physical illness for children.
First described in 1976 as "pathological alignment", the dynamic refers to a situation in which a child unreasonably rejects a non-custodial parent.Richard A. Gardner proposed parental alienation syndrome in the 1980s based on his clinical experience with the children of divorcing parents. Since then, researchers have suggested focusing less on diagnosing a syndrome and more on what has been described as the "alienated child", and the dynamics of the situation that contributed to the alienation. In this view, alienation is seen as a breakdown of attachment between parent and child and may be caused by multiple factors. The behaviors of all family members, including those of the alienated parent, may lead to family dysfunction and the rejection of a parent. The evaluation of all contributing factors and all possible remedies are recommended in evaluating cases where children have become estranged from a parent.
Parental alienation lacks a single definition and its existence, etiology, characteristics, and in particular the concept of parental alienation syndrome have been the subject of debate. Some formulations of the concept have emphasized the role of an alienating parent, termed variously the "programming" parent or "embittered-chaotic parent". Recent descriptions, influenced by the research of Kelly and Johnston, have proposed a more complex analysis, in which all family members may play a role. This "systems-based" view acknowledges that a child may be alienated from one parent with no alienation programming from the other parent. The results of an empirical study also suggest that alienating behaviors by both parents are the norm in high-conflict divorces. Rejected parents, tend to lose a sense of warmth and empathy with the child. Instead, the rejected parent is often passive, depressed, anxious, and withdrawn - characteristics which may encourage further rejection. The parent that the child aligns with (the aligned parent) may engage in alienating behaviors, including undermining the other parent. These behaviors may be conscious and deliberate or may reflect a lack of awareness on the effect of the actions on the children. Direct alienating behaviors occur when one parent actively undermines the other parent, such as making derogatory remarks about the other parent, telling the child that the other parent is responsible for the separation, or telling the child that the other parent is the cause of financial difficulties. Indirect alienation behaviors occur when one parent fails to support access or contact with the other parent or tacitly accepts the child's negative behaviour and comments towards the other parent.