Important characteristics of Skinner's (1957) definition of verbal behavior:
(The response to be analyzed is in bold text.)
The first item is not an example of verbal behavior. It is true that Wanda did something (poured a glass of water) and that her behavior produced a reinforcing consequence (a glass of water). However, the reinforcing consequence was not mediated by a listener. In other words, obtaining a glass of water did not depend on the intervening action of another person.
The second item is an example of verbal behavior. The speaker is Wanda. She did something (said "Bill, will you get me a glass of water?") and her behavior produced a reinforcing consequence (a glass of water). We classify her behavior as verbal because its reinforcing consequence was mediated by a listener. In other words, obtaining a glass of water depended on the intervening action of another person (Bill).
(The response to be analyzed is in bold text.)
The first item is not an example of verbal behavior. It is true that Frank did something (cried), but reinforcement was not involved. Instead, his behavior was likely part of a reflex; that is, it was triggered by an eliciting stimulus (the pain from scraping his knee). To learn more about reflexes and Pavlovian Conditioning, click here.
The second item is an example of verbal behavior. The speaker is Frank. He did something (cried) and his behavior produced a reinforcing consequence (being taken out of the game and comforted). We classify his behavior as verbal - even though words are not involved - because its reinforcing consequence was mediated by a listener. In other words, being taken out of the game and comforted depended on the intervening actions of another person (Frank's coach).