This study investigated children's (3-, 5-, and 7-year-olds) and adults' (t
otal N = 92) integration of information about intentions, acts, and outcome
s in moral judgments of psychological harm. Behavioral and emotional predic
tions and judgments of act acceptability and punishment were made under nor
mal and noncanonical causal conditions. Participants at all ages judged it
wrong to inflict negative psychological reactions of fear or embarrassment
on unwilling participants, even when these reactions were idiosyncratic or
noncanonical. When assigning punishment, younger children tended to use an
outcome rule, whereas older participants were more likely to use an intenti
on rule or a conjunction rule (if outcome is negative and intention is nega
tive, then punish). The results show that children as young as 3 years are
able to take into account other people's idiosyncratic perspectives when ma
king moral judgments of psychological harm.