The widely accepted expectation achievement approach to conflict, which views conflict primarily as a response to relative deprivation, has recently been challenged by proponents of a political process approach, the central features of which are mobilization of power resources and the struggle for power. Here a power balance model of conflict is developed which incorporates the core concepts from both approaches. In this model the difference in power resources between the contending parties is used as the central independent variable. Relative deprivation, utility of reaching the goal and expectancy of success are introduced as intervening variables to relate the effects from changes in the balance of power between the parties to the probability of manifest conflict between them. According to the power balance model of conflict different types of relative deprivation (aspirational, decremental and progressive) will be differently correlated with the probability of conflict. The overall correlation between relative deprivation and conflict is expected to be insignificant. Situations where the difference in power resources between two parties is decreasing are seen as most conducive to conflict. When the power resources of an already weaker party are decreasing, the probability of conflict is assumed to be lower than when the weaker party is gaining power resources.
