Noumenon, one of the experiments (I think Keysar 1994) showed that, when people read in text that Mark left a voice message (that is, the experimental subjects themselves did not hear a spoken message, only read about Mark leaving one); or alternatively read in text that Mark left a written note; then they were equally likely to judge that June would identify sarcasm. In other words, the modality of text versus speech made no difference to their expectations.
Noumenon, one of the experiments (I think Keysar 1994) showed that, when people read in text that Mark left a voice message (that is, the experimental subjects themselves did not hear a spoken message, only read about Mark leaving one); or alternatively read in text that Mark left a written note; then they were equally likely to judge that June would identify sarcasm. In other words, the modality of text versus speech made no difference to their expectations.