People perceived fair trade chocolate as lower in calories than other chocolate, according to a new study published inSocial Psychological and Personality Science. Jonathon P. Schuldt of Calfornia State University, Northridge, and colleagues tested how social ethics claims for chocolate created a "health halo" -- an effect where one positive attribute leads us to assume the presence of others. In one of the experiments, merely describing a chocolate company as treating its workers ethically led people to perceive that the company's chocolate was lower in calorie than chocolate from a company treating its workers unethically.