Verbal Behavior: Extended Edition. Chapter 1: A Functional Analysis of Verbal Behavior. Quote 33

One important feature of the analysis is that it is directed to the behavior of the individual speaker and listener; no appeal is made to statistical concepts based upon data derived from groups. Even with respect to the individual speaker or listener, little use is made of specific experimental results. The basic facts to be analyzed are well known to every educated person and do not need to be substantiated statistically or experimentally at the level of rigor here attempted. (p. 11)