In two experiments, effect of several dypsogenic stimuli upon licking response force in rats was investigated. Independent variables were preferred solutions vs water, stimulus intensity, length of water deprivation, and extinction conditions. Measurements of response forces were made with a water spout fitted on a pressure transducer and its output fed into a signal averager or a digital computer. Results indicated the response force to be primarily a function of the stimulus intensity. A tenfold reduction in stimulus intensity accounted for close to a three-and-one-half-fold increase in licking response force. Although less pronounced, water deprivation also affected the response force . The animals' preference for NaCI and glucose solutions was not reflected on licking response force . Finally, contrary to some suggestions from literature, extinction condition did not generate higher response forces than the control conditions. Results are interpreted in terms of role of feedback information in generation of licking responses and its potential value in further exploration of other aspects of water regulating functions.