Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
To test a model of contagion--where individuals hear some bad news and communicate it to their acquaintances, who then pass it on, leading to a market panic--requires a knowledge of the information networks of participants, something hitherto unavailable. For two panics in the 1850s this paper examines the behavior of Irish depositors in a New York bank. As recent immigrants, their social network was determined largely by their place of origin in Ireland, and where they lived in New York. During both panics this social network turns out to be the prime determinant of behavior.