1925 – 2019 · A portrait
A German psychotherapist developed a group method where strangers stand in for a person's family, claiming their placement reveals hidden loyalties and unresolved loss across generations.
The line above is how his claims were received — by the scientists whose job was to doubt them. It rises as a claim is tested and accepted, and the room brightens with it. It is not a verdict on truth: some accepted ideas are later overturned, and some rejected ones come back.
Beginning in 1978, drawing on family therapy, group work and his years as a missionary in South Africa, he developed a staged exercise: a client picks group members as stand-ins for family, then arranges them to reveal what he called hidden loyalties and unresolved loss.
He named the method 'family constellations' and it spread quickly through workshops worldwide, translated into many languages. Professional bodies had not yet tested it; its reach grew through practitioners and clients, not through clinical trials.
The Systemische Gesellschaft, a German systemic-therapy association, declared many of his statements and procedures incompatible with its principles, citing dogmatic interpretation and mystifying language, while leaving room for constellation work to continue apart from him.
A systematic review in the journal Family Process pooled the available studies and found results pointing toward benefit, while cautioning that the evidence was low in both quantity and quality, and that controlled studies remained scarce.
A 2026 systematic review and meta-analysis, posted as a preprint and not yet peer-reviewed, found no reliable evidence supporting the method for any condition tested, rating every included trial at high risk of bias.