Donation game
= Donation game
{title2=$T=b,\ R=b-c,\ P=0,\ S=-c$}
A social game in which <cooperation> costs its actor $c$ and benefits its partner by $b$, with $b>c>0$. Mutual <cooperation> yields $b-c$ to each, unilateral defection yields $b$ to the defector and $-c$ to the cooperator, and mutual defection yields zero.