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Abstract: This work intends to check, from an empirical perspective, if economic incentives can have a detrimental effect on GPs’ intrinsic motivations, which is called “crowding-out effect of intrinsic motivations” since the seminal work of Frey (1993), in the particular field of health prevention services. We use a “randomized experiment” on a panel of 1875 GPs practicing in five regions of France to identify the impact of different amounts and types of economic incentives on their intentions to carry out two different types of tasks in prevention field (doing a prevention check-up during a given consultation, attending a vocational training on therapeutic patient education). Our sample was randomly divided into three equal groups of GPs who were submitted to different scenarios of payment schemes encouraging them to realize these tasks. Our results does not highlight a crowding-out effect of economic incentives on GPs’ intrinsic motivations in prevention field. However, we show that the effectiveness of incentives is conditioned by the type of task rewarded and by GPs’ mental health status, estimated through a psychosociological indicator of work engagement.
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