Politeness in speech is described in terms of positive and negative face.[57] Positive face refers to one's desire to be liked and admired, while negative face refers to one's wish to remain autonomous and not to suffer imposition. Both forms, according to Penelope Brown's study of the Tzeltal language, are used more frequently by women whether in mixed or single-sex pairs, suggesting for Brown a greater sensitivity in women than have men to face the needs of others.[58] In short, women are to all intents and purposes largely more polite than men.