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Triangulation — The Family-Systems Mechanism Behind Most Alienation Cases

TL;DR. Triangulation (Bowen family-systems theory) is the mechanism by which a 2-person conflict gets stabilized by pulling in a 3rd party. In PA cases, the alienating parent stabilizes their own anxiety by triangulating the child into the adult conflict — making the child the conduit, the messenger, the confidant, the judge. The child cannot tolerate that role and collapses onto one parent's side. The collapse looks like preference. It is actually trauma resolution.

Author: Alan Markson · Last reviewed: 2026-05-15 · License: CC BY 4.0 Originally published at antialienate.com/blog/triangulation.

What triangulation looks like in PA cases

  • Child carries messages between parents ("tell your father…")
  • Child becomes confidant for adult problems ("you're the only one who understands me")
  • Child is asked to spy ("what does your dad have at his house?")
  • Child is asked to choose ("who do you want to live with?")
  • Child is rewarded for taking the alienator's side and punished for affection toward the targeted parent

These map onto Baker's strategies #9, #11, #12, #7, and #5.

The Bowen mechanism

Bowen (1978) described triangulation as the predictable family-systems response when a 2-person relationship cannot tolerate its own anxiety. The triangle stabilizes the dyad — at the cost of the third party. In PA cases, the third party is the child.

Why the child collapses

Sustained triangulation is cognitively unbearable for a child (Garrity & Baris, 1994). Two paths to relief: (1) collapse onto one parent's side, (2) develop somatic + psychological symptoms. The first looks like preference. The second looks like illness. Neither is what it appears to be.

The intervention

Two-parent neutrality breaks triangulation. When the targeted parent refuses to play (no return messages, no quizzing the child, no using the child as confidant), the alienator's pattern becomes visible to the child over time — and the triangle loses its third leg.

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Citations

  • Bowen, M. (1978). Family Therapy in Clinical Practice. Jason Aronson.
  • Garrity, C. B., & Baris, M. A. (1994). Caught in the Middle. Jossey-Bass.
  • Johnston, J. R., & Roseby, V. (1997). In the Name of the Child. Free Press.
  • Baker, A. J. L. (2007). Adult Children of Parental Alienation Syndrome.

Disclaimer

Educational content. Not clinical advice.

CC BY 4.0 · antialienate.com · Alan Markson