Lick-trading by rats: on the substitutability of dry, water, and saccharin tubes.

Thirsty rats licked two metal tubes: a water tube paired with another water tube, with saccharin, or with a dry tube. For each pair, a multipoint baseline function was measured by offering free access to one tube throughout each session, and free or restricted access to the other. The three resulting baseline functions showed the members of each pair to be mutual substitutes: When access to either tube was restricted, the rats made more licks at the other. A linear function identified the two water tubes as perfect substitutes. Convex functions identified the members of the saccharin-water and the dry-water pair as imperfect substitutes. Each pair was also tested under several reciprocal fixed-ratio schedules that required instrumental licking of either tube for contingent access to the other. The resulting schedule functions showed the members of each pair to be perfect substitutes: Water licks decreased linearly as licks at the other water tube, the saccharin, or the dry tube increased, in agreement with a conservation model of instrumental performance. Baseline and schedule functions, indistinguishable in the water-water pair, indicated a schedule facilitation of dry-tube licking in the dry-water pair and of water-tube licking in the saccharin-water pair.     

Dissociation,the Analyst's Vulnerability,and the Body: Review of Awakening the Dreamer: Clinical Journeys by Philip M. Bromberg

This review praises Bromberg's rich and evocative new book for its clinical and theoretical usefulness and elaborates on three broad themes: the analyst's personal role in traumatic enactments, dissociative/addictive uses of the body, and the distinction between life-threatening and developmental trauma. Extending Bromberg's formulations, the author argues that in successful work with trauma survivors, the analyst must be actually (temporarily) traumatized as actual, personal vulnerabilities of the analyst are necessarily engaged. The analyst's vulnerability serves as an internal contact point, opening up a process of unconscious empathy with the patient and providing crucial validation of the patient's experience. The review also explores how bodily processes are used to further dissociation with eating disordered patients and how they become the source of treatment difficulties. When the patient's states of desire have been “detoured” into the body (where they are ruthlessly controlled or attacked) as well as into the relationship with food (where they are temporarily gratified), they are not as available to be mobilized in the analytic relationship. The review also questions Bromberg's assumption that the underlying dissociative mechanisms are the same for life-threatening trauma (or Posttraumatic Stress Disorder) and developmental (or relational) trauma.