 Priority to donors. A minority of jurisdictions give some priority in receiving organs to those who have declared their willingness to donate (Cronin 2014). One reason is the supposed incentive effect of giving priority to donors of encouraging more donations. Priority schemes have been criticized on practical grounds but some criticism invokes principles, such as allocation according to need (Quigley et al. 2012). As before, the principles are supposed by those who cite them to be sufficient to defeat priority schemes even if they would produce more organs. By contrast, the principles are not thought to outweigh getting more organs with live donation and kidney exchange.