barmar, on Dec 8 2008, 12:46 AM, said:
Suppose you have a partner who psyches frequently, but you always try to respond as if he has the nominal meaning of the bid, until the rest of the auction makes it clear that it's unlikely. How much do you have to disclose if you always assume he's not psyching?
You have to disclose what you know about partner's possible hands, including any knowledge gained through experience of playing with this partner. That responsibility exists regardless of what methods you play following partner's bid.
I sometimes agree that a 1NT opening includes all 4441 shapes that are in the right range. Opposite this, we play Stayman and transfers, and bid as though opener had promised a balanced hand. Should I tell the opponents that he might be 4441? Yes, of course I should. The answer to your question is the same.

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