Reasoners need to revise their beliefs about the state of the world when confronted with contradicting evidence. In the spatial context, belief revision is assumed to be accomplished by variation of initially constructed spatial mental models. The revision process includes decisions about which part of a model to retain and which one to modify. Usually, there are several alternatives for model variation that re-establish consistency within belief sets. Frequently, these alternatives are logically equivalent. Nevertheless, human reasoners show clear preferences for certain alternatives. The assumption is that the preferences result from the application of principles that are cognitively more economic compared to others. In two experiments, we investigate how the number of objects involved in model variation processes affects preferences in model variations during spatial belief revision. We discuss whether the results can be explained in terms of cognitive economy.
['Leandra Bucher', 'Jelica Nejasmic']
Relocating multiple objects during spatial belief revision