Terrorists can strike twice—first, by directly killing people, and second, through dangerous behaviors induced by fear in people’s minds. Previous research identified a substantial increase in U.S. traffic fatalities subsequent to the September 11 terrorist attacks, which were accounted for as due to a substitution of driving for flying, induced by fear of dread risks. Here, we show that this i...

Terrorists can strike twice--first, by directly killing people, and second, through dangerous behaviors induced by fear in people's minds. Previous research identified a substantial increase in U.S. traffic fatalities subsequent to the September 11 terrorist attacks, which were accounted for as due to a substitution of driving for flying, induced by fear of dread risks. Here, we show that this ...

Terrorists can strike twice—first, by directly killing people, and second, through dangerous behaviors induced by fear in people’s minds. Previous research identified a substantial increase in U.S. traffic fatalities subsequent to the September 11 terrorist attacks, which were accounted for as due to a substitution of driving for flying, induced by fear of dread risks. Here, we show that this i...

The quasi-geometric (hyperbolic) literature typically assumes that agents are short-run impatient. In this paper, we deviate from this assumption by considering an economy in which a fraction of the population is short-run patient and the remaining population is short-run impatient. In a calibrated version of a neoclassical growth model with uninsurable risk and liquidity constraints, we find t...

T he publication of the article “Detection of MLV-related virus gene sequences in blood of patients with chronic fatigue syndrome and healthy blood donors,” by Shyh-Ching Lo, Natalia Pripuzova, Bingjie Li, Anthony L. Komaroff, Guo-Chiuan Hung, Richard Wang, and Harvey Alter, raises important issues regarding the release of research results to the public and the need for close collaboration with...

Recent policy initiatives offer cash payments to children (and often their families) to induce better health and educational choices. These policies implicitly assume that children are especially impatient (i.e., have high discount rates); however, little is known about the nature of children's patience, how it varies across children, and whether children can even make rational intertemporal ch...