Complex sentence: The disorder results from the combination of indoctrinations by the alienating parent and the child's own contributions to the vilification of the alienated parent also stating that the indoctrination may be deliberate or unconscious on the part of the alienating parent.
Split into simpler sentences: The disorder results from the combination of indoctrinations by the alienating parent and the child's own contributions to the vilification of the alienated parent. He also stated that the indoctrination may be deliberate or unconscious on the part of the alienating parent.