Abstract

In a recent article (“The current state of the platelet supply in the US and proposed options to decrease the risk of critical shortages”) published in _Transfusion,_ Stubbs et al. have argued that platelet donors should be paid. Dodd et al. have argued against this proposal, supporting their response with survey data that shows that blood donors (and by extension platelet donors) and potential platelet donors are uninterested in receiving incentives to encourage them to donate. Instead, argue Dodd et al., prospective platelet donors are motivated more by the ease of donation than the prospect of payment. This article defends Stubbs et al. from the criticisms of Dodd et al. It first argues that the preferences that persons state they have in response to survey questions might not reflect the preferences that their actions would reveal they have in actual rather than hypothetical situations. This hypothetical bias is especially likely when persons respond to surveys that ask them about the performance of morally commendable actions (such as platelet donation). This article then argues that the survey that Dodd et al. rely on exhibits serious selection bias with respect to the set of persons it considers to be potential platelet donors.