Effect of 12th Man overrated – Boston Herald
Cheering for Themselves: Why Sports Fans Attempt to Set Noise Records - The Atlantic
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Can the Seahawks win without the 12th Man's roar? With no stadium crowd, NFL to use pumped-in noise – GeekWire
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The art of noise in Seattle: Seahawks' 12th man helps create NFL's biggest home-field advantage – New York Daily News