While both sexes state that kindness is the most preferable trait in a partner, there is some evidence that men place less value on this than women and that women may not be more altruistic in the presence of an attractive man.
wˌaɪl bˈoʊθ sˈɛksᵻz stˈeɪt ðæt kˈaɪndnəs ɪz ðə mˈoʊst pɹɪfˈɜːɹəbəl tɹˈeɪt ɪn ɐ pˈɑːɹtnɚ, ðɛɹ ɪz sˌʌm ˈɛvɪdəns ðæt mˈɛn plˈeɪs lˈɛs vˈæljuː ˌɔn ðɪs ðɐn wˈɪmɪn ænd ðæt wˈɪmɪn mˈeɪ nˌɑːt biː mˈoːɹ ˌɔːltɹuːˈɪstɪk ɪnðə pɹˈɛzəns əvən ɐtɹˈæktɪv mˈæn.