A few minor suggestions

We agree with almost all of the analysis in this, excellent presentation of the molecular view of avoidance behavior. A few suggestions are as follows : Referring to response-generated stimuli as "readily observable" seems not quite right for the kinesthetic components of such stimuli, although their scientific legitimacy is not questioned. Interpreting response-generated s timuli as a form of the positive reinforcement is contested, and an alterna tive interpretation is offered. A possibly simpler interpretation of the Si dman (1962) two-lever experiment is suggested. We question Dinsmoor's (2001 ) explanation for warning stimuli not being avoided, except Cot tile refere nce to the weakness of third-order conditioning effects. A final question i s raised regarding the nature of the variables that are responsible for the momentary evocation of the avoidance response.