Proceedings of the Annual Meeting of the Cognitive Science Society

As a first step towards applying ACT-R to problems of like-lihood judgment, we draw parallels between ACT-R and Hy-Gene. More specifically, in the spirit of theory integration, wedemonstrate the relation between ACT-R’s declarative memorysystem and the core of HyGene: Minerva2. We first start bytransforming ACT-R’s activation equations into what is in ourview a more intuitive form. This form then allows us to moretransparently see the correspondence of the effect of prior his-tory between the two theories and of the current context be-tween them. The results provide insights into the workings ofthe two theories and open an avenue for future attempts of the-ory integration, not only between the two theories, but also torelated theories of memory. Moreover, we hope these resultswill be important steps toward testing ACT-R’s capabilities ofaccounting for judgment phenomena.