The Bogardus social distance scale is a psychological testing scale created by Emory S. Bogardus to empirically measure people's willingness to participate in social contacts of varying degrees of closeness with members of diverse social groups, such as racial and ethnic groups.

Answer this question: who tried to evaluate attitude through the social distance? Let's think fast. Stream of consciousness:
To answer the above question, the relevant sentence is: The Bogardus social distance scale is a psychological testing scale created by Emory S. Bogardus to empirically measure people's willingness to participate in social contacts of varying degrees of closeness with members of diverse social groups, such as racial and ethnic groups. So the final answer is Emory S. Bogardus.