Gender differences in honesty: Groups versus individuals

•We analyze gender effects in the lying behavior of groups and individuals.•We extend the die-rolling experiment of Fischbacher and Föllmi-Heusi (2013).•There are no pronounced gender effects under individual decision-making.•Strong gender effects emerge under joint decision-making in groups.•There is more lying in male groups and mixed groups than in female groups.

Extending the die rolling experiment of Fischbacher and Föllmi-Heusi (2013), we compare gender effects with respect to unethical behavior by individuals and by two-person groups. In contrast to individual decisions, gender matters strongly under group decisions. We find more lying in male groups and mixed groups than in female groups.