En el campo de la psicología ecológica, la noción de affordance refiere a la percepción de oportunidades para la acción en los objetos del entorno. Problemáticamente, la falta de unidad conceptual parece dominar la caracterización del fenómeno haciendo que su significado varíe drásticamente dependiendo del autor que hace uso de ella. Este artículo ofrece una exégesis sistemática al trabajo original de J.J. Gibson enfocándose en la pregunta sobre qué son las affordances y cuáles son sus componentes fundamentales. Finalmente, se propone (...) una clasificación que permitirá categorizar diversas alternativas contemporáneas del concepto según la forma en la cual entienden la relación entre tales componentes. (shrink)

In its long development the Italian cooperative movement went through slow and steady transformations, that have generally sheltered it from radical discontinuities. The different trends and political traditions that have become intertwined with the history of the cooperative movement highlight the flexibility of the cooperative principles which have been adapted on the basis of different situations, without being modified in their abstract outlines. In this paper we argue that the Italian cooperative movement on the one hand seems to have absorbed (...) the principles of market economy through the adoption of organization of productions and functional structures similar to those of many capitalist companies. On the other hand Italian cooperative movement have developed a peculiar form of social action based on the institutionalization of postulates such as the mutual aid and solidarity. In short the cooperative form has historically constituted and continues to be shaped as a peculiar pattern in which undercapitalization requires a wider-ranging fluidity of the working relationships. These have been raised to the ranks of moral values in social action. (shrink)