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Variables petitioner and respondent provide detailed information about all parties, except the identity of the state if a state (or one of its subdivisions) is a party, petitioner and respondent variables note only whether a state is a party, not the state's name.
The remaining difference between stimulus equivalence and respondent conditioning is the defining outcomes of both phenomena. Moreover, respondent conditioning may be a special case of stimulus equivalence, one in which the transfer of eliciting functions can be observed, in one direction only.