The mand is a type of verbal operant whose response form is under control of a motivating operation (MO). It is the first verbal operant to be acquired, directly benefits the speaker, leads to the development of other behaviors, and may serve to replace problem behavior. Even though the topography of the mand is under the functional control of an MO, its occurrence is influenced by a multitude of variables functioning as discriminative stimuli (SDs). Thus, the generalization of mands can occur across both MOs and SDs. Additionally, the same MO may evoke new mand topographies-a form of response generalization. The purpose of this article is to distinguish and describe these types of mand generalization in order to encourage future research and influence practice.
Keywords: Discriminative stimuli; Generalization; Mand; Motivating operation; Verbal behavior.