mechanism reliably supports the evolution of cooperation when actions vary continuously. Ambiguous reciprocity, a strategy … can stabilise cooperative strategies against the corrosive effect of ambiguous reciprocity. Evolved strategies often … consist of cooperative reciprocity with ingroup partners and uncooperative reciprocity with outgroup partners. Results from a …

This chapter reports the results of experiments that were designed to test the effectiveness of reciprocity as a … contract enforcement device. It turns out that reciprocity generates a significant increase in effort levels relative to the …. The impact of reciprocity is particularly strong if both parties have possibilities to reciprocate. Hence, reciprocity can …

refutes the self-interest hypothesis, suggesting that concerns for altruism, fairness, and reciprocity strongly motivate many …

that only workers who display positive reciprocity in a lab experiment show reciprocal performance responses in the field …, while workers who lack positive reciprocity in the lab do not respond to the wage increase even if they feel underpaid at …

that only workers who display positive reciprocity in a lab experiment show reciprocal performance responses in the field …, while workers who lack positive reciprocity in the lab do not respond to the wage increase even if they feel underpaid at … interpret previous contradictory findings in the literature. -- Fairness Perception ; Positive Reciprocity ; Field Experiment …