Vol. 9 No. 1 (2001)

Articles

• Effects of two schedules of partial food deprivation on body weight and water and food intake in rats

  Antonio López -Espinoza, Héctor Martínez

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• Effects of the acute administration of Imipramine on learned helplessness of male and female rats

  Amauri Gouveia Jr.

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• Effects on verbal and on nonverbal behavior of changes in reinforcement contingencies

  Carla Cristina Paiva Paracampo, Deisy das Gracas de Souza, Maria Amelia Matos, Luiz Carlos de Albuquerque

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• Cooperative Behaviors: A review of procedures and result

  Samuel Delepoulle, Jean-Claude Darcheville, Philippe Preux

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• The meaning of “latent variables” in psychology

  Victor Corral Verdugo

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