ABSTRACT  An attitude has three aspects: cognitive, affective, and behavioral. Two original instruments are presented: a modified Bogardus Social Distance Scale measures the behavioral aspect; factor I of a semantic differential test measures the affective aspect, while factors II and III measure the cognitive. Because correlations between the Bogardus and the semantic differential factors are not strong, a combination of both tests seems necessary in order to measure all three aspects. After a description of how the instruments were developed, suggestions are given for administering and for scoring them, both by hand and by machine.