The needs of the many, the wealth of the few: How responsibility affects decision-making for others

• We investigate what drives responsibility effects in risky decisions for others. • We compare responsibility for more principals and responsibility for more money. • We use a Gneezy and Potters (1997) investment game. • The number of principals has no impact on responsibility effects. • The impact of the decision to each principal is the main driving factor. We test whether the number of principals or the investment amount amplify responsibility in risky decision-making for others. We do not find increased caution for more people, but rather an effect of increased endowment per person, but not in total.