Competitive Fundraising (IMAGE) Cell Press Caption In competitive helping in donations made to online fundraising pages, males respond competitively to donations made by other males, but only when giving to an attractive female fundraiser. Female donors do not compete in this way. These findings suggest a role for sexual selection in explaining conspicuous generosity. Credit Raihani et al./<i>Current Biology</i> 2015 Usage Restrictions Credit Required. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.