Few ideas have captured the attention and charged the emotions of the public, of mental health and legal professionals as thor- oughly as the concept of parental alienation and Gardner's (1987) Paren- tal Alienation Syndrome. For all of this controversy, the alienation concept stands outside developmental theory and without firm empirical support. The present paper explores alienation and its conceptual coun- terpart, alignment, as the necessary and natural tools of child-caregiver attachment (Ainsworth & Wittig, 1969; Bowlby, 1969) and of family system cohesion. This conceptual foundation offers developmentalists, clinicians, and family law professionals alike a common language and