The Essential Elements of Communication in the GRIT Strategy

Abstract
Two experiments were carried out to evaluate the components of the GRIT strategy for promoting cooperation in mixed-motive conflict. A modified Prisoner's Dilemma game was used. In the first experiment, the presence or absence of an opening general announcement of intention was crossed, in a 2 by 2 design, with the presence or absence of specific announcements of individual acts. The results indicated that the general announcement was both necessary and sufficient, whereas the specific messages were ineffective. In the second experiment, the results indicated that subjects responded more cooperatively to the conciliatory initiatives of the simulated other when the general announcement included an invitation to work together toward a common objective. The effect was not considered strong, however. The GRIT recommendations to include specific announcements of individual acts and an invitation to join in conciliation may have greater usefulness in more complex social interactions.

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