1. Shifts in scale values of attitude statements as a function of the composition of the scale;Fehrer;Journal of Experimental Psychology,1952
2. Adaptation-level theory;Helson,1964
3. Experimental design: Procedures for behavioral sciences;Kirk,1968
4. Anchoring effects in the absolute judgment of verbal materials;McGarvey;Archives of Psychology,1943
5. Psychological perspective and attitude change;Ostrom,1968