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At the present time, the growing interest in the topic of moral judgment highlights the widespread need for a standardized set of experimental stimuli. We provide normative data for a sample of 120 undergraduate students using a new set of 60 moral dilemmas that might be employed in future studies according to specific research needs. Thirty dilemmas were structured to be similar to the Footbridge dilemma (�instrumental� dilemmas, in which the death of one person is a means to save more people), and thirty dilemmas were designed to be similar to the Trolley dilemma (�incidental� dilemmas, in which the death of one person is a foreseen but unintended consequence of the action aimed at saving more people). Besides type of dilemma, risk-involvement was also manipulated: the main character's life was at risk in half of the instrumental dilemmas and in half of the incidental dilemmas. We provide normative values for the following variables: (i) rates of participants' responses (yes/no) to the proposed resolution; (ii) decision times; (iii) ratings of moral acceptability; and (iv) ratings of emotional valence (pleasantness/unpleasantness) and arousal (activation/calm) experienced during decision making. For most of the dependent variables investigated, we observed significant main effects of type of dilemma and risk-involvement in both subject and item analyses
