Dr. Bernet reviews the eight criteria for diagnosing parental alienation that were originally developed in 1985 by Dr. Richard Gardner. These eight symptoms all occur in the child rather than in either parent.
Although Dr. Bernet cautions that the symptoms still need to be studied further, he says they have held up well as indicators of parental alienation.
Frivolous rationalization for the complaint
Lack of ambivalence
Independent thinker phenomenon
Automatic support/Reflexive support
Absence of guilt
Spread of animosity