To test the hypothesis that sociability affects conditioning of the pronouns I and we. 40 Ss were selected according to their scores on the sociability scale of the Guilford-Zimmerman Temperament Survey, 20 with high scores and 20 with low scores. Ten Ss from each of these groups were conditioned to I and 10 Ss were conditioned to we by means of the generalized conditioned reinforcers “good” and “mmm-hmm.” The results significantly supported the hypothesis.