Psychonomic Bulletin & Review, 2002, 9 (3), 482-488
Self-control by pigeons in the prisoner’s dilemma
FOREST BAKER and HOWARD RACHLIN
Pigeons played a repeated prisoner’s dilemma game against a computer that reflected their choices: If a pigeon cooperated on trial n, the computer cooperated on trial n +1; if the pigeon defected on trial n, the computer defected on trial n + 1. Cooperation thus maximized reinforcement in the long term, but defection was worth more on the current trial. Under these circumstances, pigeons normally defect. However, when a signal correlated with the pigeon’s previous choice immediately followed each current trial choice, some pigeons learned to cooperate. Furthermore, cooperation was higher when trials were close together in time than when they were separated by long intertrial intervals
Ficou difícil reclamar do paradigma do homo economicus de uns tempos para cá. O melhor é, realmente, deixar os preconceitos e os livros de auto-ajuda e partir para análises mais detalhadas dos comportamentos humanos e não-humanos.
p.s. (mal-humorado) Tem muita coisa interessante por aí mas pouca gente querendo pesquisar. Fazer política, gazetear e se fazer de vítima dá mais ibope entre os amiguinhos (como sempre foi). Sim, por isso vamos patinar muito nos testes mundias de educação.