An interesting article that shows how different types of incentives impact the number of article submitted--and ultimately published--in Science magazine.
"Our research suggests that government-initiated incentives to publish are associated with increases in submissions and publications at the country level. Career incentives are positively correlated not only with submissions but also with publications, which suggests that they encourage faculty to submit their best work to Science. Institutional incentives are correlated with submissions but not with publications. Cash incentives appear to encourage submission of research regardless of quality, as suggested by correlation with lower acceptance rates."