Palmer, D. C. (1999). A Call for Tutorials on Alternative Approaches to the Study of Verbal Behavior. The Analysis of Verbal Behavior, 16, 49-55.
[Citing Place (1992a)]  [Citing Place (1998b)]  
Citing Place (1992a) in context (citations start with an asterisk *):
Section Priming:Findings and Procedures
* I am persuaded that autoclitic frames play a central role in structural regularities in language (grammar). An individual who has heard many examples of Where did X go? or I gave the X to Y will utter such expressions with novel elements (Place, 1992; Skinner, 1957; Stemmer, 1990). A central challenge for our field is explaining the fluctuations in stimulus control as such expressions unfold.
Section Structure and Function of the Vocal Apparatus
* To linguists, the sentence is a formal unit, defined as such by one's favorite grammar. Skinner (1957) dismissed such formal units out of hand, and his analysis offers an alternative explanation for many strings that would be considered sentences in everyday parlance. Place(1992,1998) is perhaps unique among behaviorists in arguing that the sentence cannot only be defined functionally, but that it is, in some sense, the fundamental unit of verbal behavior, for it is typically the sentence that specifies contingencies to which a listener can profitably respond. (Note that this view of the sentence is entirely incommensurate with the linguists' definition: Linguists are unperturbed if their grammar generates strings a thousand words long or strings that are gibberish to the ears of a listener.)
Lieberman (1984) observed that spoken verbal behavior occurs in phase with respiration and that sentence boundaries commonly correspond to phase changes in respiration (i.e., from exhaling to inhaling). That is, we usually wait until we finish a sentence before inhaling, sometimes to the point of discomfort. This is a curious regularity, quite at odds with a formal analysis of language, and one that calls for a behavioral interpretation. Is it the contingency-specifying property of sentences, of which Place speaks, that regulates respiration when we speak?