Vol. 7 No. 1 (1999)

Articles

• Comparing the effects of differential versus non-differential stimuli in two temporally defined schedules with equal probabilities of water delivery

  Emilio Ribes-Iñesta, Carlos. J. Torres, Julio Piña

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• Diferential appetitive contextual conditioning: Time of exposition to the non-reinforced context and intersession interval

  Alba Mustaca, Santiago Pellegrini

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• Study behavior: the role of identifying criteria in didactic speech

  Carlos Ibañez Bernal

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• Selectionism: Towards a synthesis of the biological and the psychological

  José E. Burgos

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