thoughts and feelings to emerge. described in a case study how he used a kind of behavioral activation (uncommon in the psychoanalytic therapy at that time) when he asked an opera singer with performance anxiety to “perform” during a therapy session and in this way to struggle with her fears . Clinical empathy in psychoanalysis Ferenczi believed the empathic response during therapy was the basis of clinical interaction. He based his intervention on responding to the subjective experience of the analysand. If the more traditional opinion was that the analyst had the role of a physician, administering a treatment to the patient based upon diagnostic judgment of psychopathology, Ferenczi wanted the analysand to become a co-participant in an encounter created by the therapeutic dyad. This emphasis on empathic reciprocity during the therapeutic encounter was an important contribution to the evolution of psychoanalysis. Ferenczi also believed that self-disclosure of the analyst is an important therapeutic reparative force. The practice of including the therapist's personality in therapy resulted in the development of the idea of mutual encounter: the therapist is allowed to discuss some content from his/her own life and thoughts, as long as it is relevant to the therapy. This is in contrast to the Freudian therapeutic abstinence according to which the therapist should not involve his/her personal life with the therapy, and should remain neutral (ibid.). The mutual encounter is a precedent for the psychoanalytic theory of two-person psychology. The "confusion of tongues" theory of trauma Ferenczi believed that the persistent traumatic effect of chronic overstimulation, deprivation, or empathic failure (a term further elaborated by Heinz Kohut) during childhood is what causes neurotic, character, borderline and psychotic disorders (ibid.). According to this concept, trauma develops as a result of the sexual seduction of a child by a parent or authority figure. The confusion of tongues occurs when the child pretends to be the spouse of the parent. The pathological adult interprets this infantile and innocent game according to his adult "passion tongue" and then forces the child to conform to his passion tongue. The adult uses a tongue the child does not know, and interprets the child's innocent game (his infantile tongue) according to his disturbed perspective. For example, a father is playing with his little girl. During their common game, she offers him the role of her husband and wants him to sleep with her just as he sleeps