Understanding differences in moral judgments: the role of informational assumptions.

This study examined differences in moral judgments as they relate to informational assumptions. It was hypothesized that (1) differences in moral judgments are related to differences in informational assumptions, (2) moral judgments change if the information believed to be true changes, and (3) the relation between informational assumptions and moral judgments is not affected by age. 72 subjects (aged 11-9, 15-10, and 21-3) evaluated events concerning welfare, justice, and rights and reevaluated them in light of the opposite information. A significant relation was found between the evaluations and the informational assumptions, and 80% of the evaluations changed in response to informational changes. The relation between evaluations and informational assumptions was significant within each age group. These findings demonstrated that informational assumptions are a source of variation in moral judgments and underscored the need to distinguish between the 2 types of judgments when studying differences in moral reasoning.