18. The method of claim 16 , wherein each of said entries of said scenario memory indicates which one of said partner and said robot has the right to speak, and wherein step (c) comprises the step of determining said behavior of said robot according to a currently recognized behavior of said partner if the referenced entry indicates that said partner has the right to speak and according to a currently recognized state of said people if said referenced entry indicates that said robot has the right to speak.
18. The method of claim 16 , wherein each of said entries of said scenario memory indicates which one of said partner and said robot has the right to speak, and wherein step (c) comprises the step of determining said behavior of said robot according to a currently recognized behavior of said partner if the referenced entry indicates that said partner has the right to speak and according to a currently recognized state of said people if said referenced entry indicates that said robot has the right to speak. 19. The method of claim 18 , wherein step (c) comprises the steps of: comparing a currently recognized behavior of said partner to a predetermined behavior if the referenced entry indicates that said partner has the right to speak; and producing an utterance from the robot for urging the partner to perform said predetermined behavior if there is a mismatch between said recognized behavior said predetermined behavior.