That is the title of the paper, by Corrado Giuletti, Mirco Tonin, and Michael Vlassopoulos, the subtitle is “Stock market returns and fatal car accidents,” here is the abstract:
This paper provides evidence that daily fluctuations in the stock market have important–and hitherto neglected–spillover effects on fatal car accidents. Using the universe of fatal car accidents in the United States from 1990 to 2015, we find that a one standard deviation reduction in daily stock market returns is associated with a 0.6% increase in fatal car accidents that happen after the stock market opening. A battery of falsification tests support a causal interpretation of this finding. Our results are consistent with immediate emotions stirred by a negative stock market performance influencing the number of fatal accidents, in particular among inexperienced investors.
Forthcoming in Journal of Health Economics, via the excellent Kevin Lewis.