this end we develop a simple dynamic principal-agent model where both players may have feelings of altruism or spite toward …

altruism sometimes provides a net incentive to report performance truthfully, rather than to bias evaluations upward. The …

altruism. We show that allowing for private provision of health care, parallel to (free) treatment in a National Health Service …

maximization problem of the firm. As a result, monitoring and pay should be complements. In our experiment, between and within …