Folie à deux as a cusp catastrophe in coupled active inference: a dynamical systems account of shared psychotic disorder
Frontiers in Psychiatry August 10, 2026 D. Beasley
Prior work in computational psychiatry has identified three failure modes of precision weighting that produce the phenomenology of individual-level psychosis: aberrant precision on priors, aberrant precision on sensory likelihood, and aberrant meta-precision. The coupled, dyadic case has remained outside this framework. We identify a fourth failure mode, dyadic precision migration, in which...