ABSTRACT
We present the three action-system model (3AS), which is a framework that has been developed from behavioral and neuroscience findings. The core assumption of this model is that, in humans, three neurocognitive systems (i.e., motor control/dorso-dorsal system, technical reasoning/ventro-dorsal system, and semantic knowledge/ventral system) are dedicated to the processing of three different and specific kinds of physical relationships (i.e., affordances, mechanical actions, and contextual relationships, respectively). We discuss the points of convergence and divergence between this framework and the ecological psychology approach by considering the most recent literature on human tool use.
