Anxiety, it seems, varies widely from one person to the next. What leaves you in a knot of angst may not even faze your friend. But two new studies show that during a crisis, anxiety seems to be contagious; you and your friends will probably ultimately arrive at the same anxiety level.

David Eilam of Tel Aviv University measured how groups of voles—a small, social rodent—responded to threats produced by barn owls, their main predator. Like humans, a few voles are very anxious, a few are not at all, and most are in the middle. When barn owls flew over the cages of individual voles, each of the animals’ nervousness increased by about the same amount, as measured by standard behavioral tests. The frightened animals continued to display the wide range of anxiety levels they started with.

But when Eilam took groups of voles with different individual anxiety levels and exposed them to barn owls, they all ended up equally stressed out. “The variability that was there before diminished, and the entire group behaved almost the same,” Eilam says.

He believes that behavioral norms might be beneficial for social animals during a crisis. This convergence to similar behaviors may help explain why humans turn to religion and other rituals after a major catastrophe. These ceremonies, Eilam says, may keep the most anxious humans from going over the edge.

This article was originally published with the title We're in This Together.

2 Comments

1. 1. rwstutler 11:35 PM 6/4/11

   in humans, and other social animals, body language and facial expressions trigger mirror neurons in those who see the posture and expressions, which activate emotional circuits below the level of conscious awareness and "reason", which in turn generate body language and facial expression changes in the viewer. thus, panic will travel thru a crowd faster than any possible form of linguistic communication.

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2. 2. bucketofsquid 11:04 AM 6/9/11

   In day to day life I have a higher than normal anxiety level. In a crisis I actually get calmer. Crowds tend to trigger greater anxiety in me. Any non-crisis crowd around me would be screwed according to this study.

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