Agheyisi and Fishman (1970) suggest using commitment measures to assess attitudes.
Commitment measures are questions designed to evaluate how willing a person is to do something. For example, asking whether the interviewee would let their daughter marry a man from another language group would reveal attitudes towards speakers of that language. They say that these "are more useful than traditional attitude questionnaires for measures which are designed to be validated against overt behaviour, because they directly tap respondents’ behaviour tendency rather than their cognitive or evaluative responses." <ref>Agheyisi, Rebecca, and Joshua A. Fishman. “Language Attitude Studies: A brief survey of methodological approaches.” Anthropological Linguistics 12:5, 1970: 137-157. Page 145.</ref>
References & Notes