p513fig13.41 A conditioning paradigm that illustrates what it means for conditioned inhibitors not to extinguish.<BR>||  Conditioned inhibitor does not extinguish.  1. Learning phase: CS1 light-> shock, CS1-> Fear(-); Forgetting phase: n/a;.  2. Learning phase : CS1 + CS bell-> no shock; CS2-> relief;. Forgetting phase: CS2 bell- no forgetting.  SAME CS could be used!  SAME "teacher" in forgetting phase!  Something else must be going on , or else causality would be violated!