Complexity
 2000
DOI: 10.1002/(sici)1099-0526(200001/02)5:3<14::aid-cplx3>3.0.co;2-q
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Global cooperation achieved through small behavioral changes among strangers

Gregg Hartvigsen
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,
Lee Worden
2
,
Simon A. Levin
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Cited by 8 publications

(2 citation statements)
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“…There is an extensive body of research investigating the problem of how cooperation might evolve and persist in humans and other animals, where defecting, or cheating, should lead to higher overall returns (Axelrod and Hamilton, 1981;Sigmund, 1993;Dugatkin, 1997;Hartvigsen et al, 2000;Lehmann and Keller, 2006). For instance, lions (Panthera leo) that cheat by not participating in a hunt reduce risk and yet benefit from successful kills conducted by members of their pride (Scheel and Packer, 1991).…”
Section: Introductionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…There is an extensive body of research investigating the problem of how cooperation might evolve and persist in humans and other animals, where defecting, or cheating, should lead to higher overall returns (Axelrod and Hamilton, 1981;Sigmund, 1993;Dugatkin, 1997;Hartvigsen et al, 2000;Lehmann and Keller, 2006). For instance, lions (Panthera leo) that cheat by not participating in a hunt reduce risk and yet benefit from successful kills conducted by members of their pride (Scheel and Packer, 1991).…”
Section: Introductionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…Including spatial dimensions has proven to be a very fruitful extension to evolutionary game theory (see, for example, Nowak & May 1992;Lindgren & Nordahl 1994;Herz 1994;Killingback & Doebeli 1998;Eshel et al 1999Eshel et al , 1998Hartvigsen et al 2000). Instead of considering a well mixed population where all individuals interact with each other, the individuals are bound to lattice sites and interact only with their neighbours.…”
Section: Introductionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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