The elicitation of affordance depends on conceptual attributes: evidence from a virtual reality study.

Affordance is a property of object with respect to the observer, which is related to the attributes of the object. In the present study, we examined whether affordance elicitation is primarily based on the conceptual attributes or instance attributes of the object. To distinguish the role of the two types of attributes in elicitation of affordance, we manipulated the size of a pan in virtual reality (Experiment 1). The critical condition is the giant pan, which should elicit manipulability affordance if affordance is concept-based and it should not elicit manipulability affordance if affordance is instance-based. The results support the former assumption, i.e., the elicitation of affordance is concept-based. To confirm the conclusion, we created a water-handled pan in virtual reality and examined its manipulability affordance (Experiment 2). The water-handled pan looks similar to a normal pan, but its handle is composed of flowing water which, in concept, cannot be grasped. Consistent with the concept-based conclusion, the water-handled pan did not elicit manipulability affordance. The present findings provided convergent evidence that ordinary people rely primarily on conceptual attributes of the object to elicit manipulability affordance.