What is the specific behavior that B.F. Skinner agrees has not been
reinforced?

Answer may not include reflexes, physiological reactions or
instinctual behavior. Also, the anecdote about his 3-month-old
daughter winking her nose will not do.

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Clarification of Question by kotaja-ga on 23 Jan 2003 21:47 PST

Please include a verifiable reference (preferably bookname and page #,
if such exists) proving B.F. Skinner's explicit agreement.

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Clarification of Question by kotaja-ga on 25 Jan 2003 13:53 PST

The exact wording of the question is "What is the one thing that
Skinner agrees has not been conditioned?", and it was presented to me
as an intellectual nut to crack. No further elaborations were given or
allowed.

I think the answer that seems most plausible to your question is what
Skinner calls "Superstitious Behavior".  Basically, he found that
pigeons, when presented with a series of rewards based on no actual
prior stimulus to predict the onset of a reward, they will eventually
elicit responses/behaviors in response to any possible stimulus they
think predicts the reward.  As a result, you end up seeing a pigeon
doing a lot of weird behavior (they think is being reinforced when it
is not) in order to receive the reward.

The article that presents this finding:
Skinner (1948).  Superstition in the pigeon.  Journal of Exp. Psych.
vol 38, pp.168-172.