Fordham used the concept of syntonic countertransference to express the analysts’ identifications with patients’ inner objects, thereby encompassing in one term — syntonic — Racker’s distinction between concordant and complementary reactions.
This passage defines syntonic countertransference as Fordham’s unifying concept for the analyst’s unconscious resonance with the patient’s inner world, and traces its genealogy from Racker’s earlier typology.
, The Therapeutic Relationship: Transference, Countertransference, and the Making of Meaning, 2009thesis