Abstract
Advice processes are omnipresent in our professional and private lifes. We study with a laboratory experiment how gender and gender matching affect advice giving and how gender matching affects advice following about entry into a real-effort tournament. For advice giving we find that women are less likely than men to recommend tournament entry to advisees that are medium performers. Furthermore, women maximize less often the expected earnings of advisees that are medium performers. For advice following we find that men enter the tournament significantly more often than women in the intermediate-performance group. Gender matching does not seems to affect advice giving or following. Overall, when it is less clear what the better advice or decision is, gender differences emerge. These results are consistent with findings in other areas that document that gender differences emerge in more ambiguous situations.