Attitudes toward the five categories of moral concerns may also influence political beliefs. In a large Website-based study, Jonathan Haidt and colleagues found that, when liberals and conservatives were compared with each other, liberals valued harm/care and fairness/reciprocity more than conservatives did, and conservatives valued authority/respect, ingroup/loyalty, and purity/sanctity more than liberals did. These differences held even after accounting for the effects of age, gender, education, and income.