Homo reciprocans
Homo reciprocans, or reciprocating human, is the concept in some economic theories of humans as cooperative actors who are motivated by improving their environment through positive reciprocity (rewarding other individuals) or negative reciprocity (punishing other individuals), even in situations without foreseeable benefit for themselves. This concept stands in contrast to the idea of homo economicus, which states the opposite theory that human beings are exclusively motivated by self-interest.