Bus Stops and Violence, Are Risky Places Really Risky?

Is alarm calling risky? Marmots avoid calling from risky places.

Alarm calling is common in many species. A prevalent assumption is that calling puts the vocalizing individual at increased risk of predation. If calling is indeed costly, we need special explanations for its evolution and maintenance. In some, but not all species, callers vocalize away from safety and thus may be exposed to an increased risk of predation. However, for species that emit bouts w...

Report on Blood Drawing : Risky Procedures , Risky Devices , Risky Job

Intimate partner violence and risky sexual behaviors among Iranian women with substance use disorders

  Background: Intimate partner violence (IPV) and risky sexual behaviors are serious and overlapping public health problems that disproportionately affect drug-involved women. Despite the fact that drug-using women experience extensive IPV, to date, no studies have investigated the association of IPV and risky sexual behaviors among drug-using women in Iran.   Methods : Drug-using ...

Risky prey behavior evolves in risky habitats.

Longstanding theory in behavioral ecology predicts that prey should evolve decreased foraging rates under high predation threat. However, an alternative perspective suggests that growth into a size refuge from gape-limited predation and the future benefits of large size can outweigh the initial survival costs of intense foraging. Here, I evaluate the relative contributions of selection from a g...

How Risky Are Recessions for Top Earners?

To answer these questions, we use a confidential panel dataset on earnings histories from the US Social Security Administration (SSA), which allows us to follow workers’ earnings over the business cycle. Our approach is to identify individuals who were in the top 1 percent of the earnings distribution just prior to the economy entering a recession or boom. We ask how the evolution of these work...