(Stuart) I guess what I'm saying, Gerardo, is that if you change a concept by expanding its scope of application, after a point you have something very different. (Gerardo) Yes, it´s something very different, we´ve agreed on that. Let´s move on and analyse what this new usage implies for our goals. (Stuart) If behaviorism originally referred to overt behaviors (meaning what we can see) and then was expanded to include covert behaviors (what we can't see as a matter of fact because its concealed but which could be seen if it wasn't) and then its expanded still further to include things that only the individual can see, after a while all we've done is redefine things like mental phenomena, originally specifically excluded from behaviorism, as "behavior" too. And now all we've done is expand the idea of behaviorism so far as to cover even what was once not considered behavior. (Gerardo) Don´t forget that the expansion doesn´t include all that was considered as "mental", but only a subset of it (activity detectable at least by one person). I see nothing wrong with proposing a new usage and see what happens. The issue is how the new conceptual framework works with respect to our goals. (Stuart) I'm not disputing that we can change meanings of words, expand their applications, etc. I'm just saying that, if behaviorism was originally formulated to account for human behavior without invoking the idea of minds (understood as a private realm), then you have substantially altered the meaning of "behaviorism" (Gerardo) You´re oversimplifying the motivations that elicited the behaviorist proposals. There were several motivations, and therefore several proposals. You should ask how each behaviorist answered some questions: "what´s mind?", "what´s wrong with mind?" and "what should we do about it?". For Watson, what´s wrong is that "introspection is unreliable for doing scientific research", and what we should do is "rely on observable behavioral data". For Kantor, what´s wrong is "the postulation of supernatural entities", and what we should do is "remain within a naturalistic description of observable fields of events". For Skinner, what´s wrong is that "postulation of mental stuff is a pseudoexplanation" and what we should do is "rely on experimental analysis", but "private activity" is not the "mental stuff" that should be avoided. The "mental stuff" that should be avoided (in scientific research) is the concept of "inner causal agency" and "inner world of ghostly copies". (Stuart) if you now say but those elements that are private are really behavior, too. And if you've done that, then it's not a defense against a criticism of the original behaviorism nor does it establish that everything is still about behaviors only, just because we are now calling a broader range of things "behavior". (Gerardo) You insist on saying that "it´s not really behavior", but you´re begging the question, because your premise for saying so is precisely the rejection of the conceptual change. If there´s a conceptual change, it´s obvious that some features will remain and others will be modified, and the assessment of what should or shouldn´t remain and what can or cannot be modified depends on each conceptual usage´s purposes. So, instead of repeating that "it´s not really behavior", let´s analyse what is similar and what is different in each conceptual usage, and what are their effects on our purposes. For example, would you consider that "seeing a dog" is behavior? I´d say that we could apply the term and consider it a "perceptual behavior" under the control of the actually observed stimulus and the previous learning contingencies with similar stimuli. You may want to retain the word "behavior" only for muscular responses that act on the world and are publicly observable by other people, but even if you want to distinguish them from muscular responses, you should acknowledge that there´re many features that are closer to the concept of "behavior" than to the other (non- episodic and non-interactional) mental concepts: "seeing a dog" is an event (it has a beginning and an end), a kind of interactional activity between the organism and its environment, a response modifiable by conditioning principles, and it is composed by many physiological changes in the organism, most of them not easily observable by other people. The same could be said about other sensory dimensions such as hearing, feeling, and smelling. And all these examples already have the issue of privacy: a person staring at a dog might not be seeing a dog. How would you see these examples? Regards, Gerardo.