"Direct reciprocity" occurs when individuals are more likely to help individuals that helped them previously, while "generalized reciprocity" (also called "upstream reciprocity") occurs when individuals are more likely to help after they have been helped by any individual. So direct reciprocity is like "I'll scratch your back if you scratch mine" and generalized reciprocity is … Continue reading Generalized reciprocity in vampire bats?
Finally! The bad news is that there are only 7 bats, rather than the 15 for which I was waiting, or the 30 for which I was hoping. Still, after 4 years of persistent effort, it feels nice to have any sort of success at getting bats into our lab. The population of vampires at Organization for … Continue reading Vampires arrive on campus