A key finding of Radical Behavorism is the role and power of operant behavior. An importance of "Verbal Behavior" is that it suggests that operant behavior can explain much of human language and, with that, much of human thought. So with this book, Skinner could feel that his findings on operant behavior had the power to help us understand "mental" and "psychological" aspects of being human that hitherto had been no better defined that a Tarot deck could do.
My only one reading so far seems quite inadequate. I had to make an effort to get through the first half, in which a lot of fundamentals are introduced. Fortunately, all the preparation paid off for me in the second half, which I found quite exciting. Much of it, oddly, given that I was struggling at times to understand, felt familiar. I thought "Yes, that's how I revise my speech, yes, that's how I think, yes that's how I adjust what I am saying with my audience in mind."
Skinner's hypothesis that thinking is a behavior (verbal and nonverbal) of the same basic kind (albeit of its own nature and complexity) as other human behavior hit me with the greatest force. It implies that, although for each of us there are private events, dualism is overcome. It may not be that we're "beyond freedom and dignity" as that we've rendered such terms obsolete - because we now we have the knowledge to do what needs doing instead of spouting empty words about it.
"Verbal Behavior" lives: for example, extending Skinner's "Verbal Behavior" work, Barry Lowenkron from California State University has added to our understanding of an area not well covered by Skinner: how a listener comprehends what is said. Lowenkron goes to great pains to provide clear examples of his finding of what he calls "joint control", which is fully based on Skinner's own findings regarding tacts and self-echoics. It can take much longer to find the truth than make up a story, but the ignorance that supports cognitive fictions is being brushed aside to be replaced by behaviorist knowledge.