I talk with sports psychology and behavior researcher Philip Furley about how athletes' body language communicates far more than we realize — and how it can affect teammates, opponents, judges, and even the outcome of the game itself. Other topics discussed: celebratory behaviors and how that can influence perceptions of people, including judges; behaviors and strategies of penalty kickers and goalkeepers in soccer; some specific behaviors from recent World Cup games; challenges in finding general behavioral patterns in sports; athletes' anxiety; and ways people might make practical use of his research findings.

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