THE MEASUREMENT OF CAUSAL PERCEPTION THROUGH MEMORY DISPLACEMENT: IS ALL PASSING A NON-CAUSAL EVENT?
Forward memory displacement of the position of a moving object (RM) has been suggested to capture relevant properties of causal perception. However, the ability of RM to specifically index causality was called into question by Choi & Scholl (2006), who found equivalent patterns of RM reduction in causal â€œlaunchingâ€ and non-causal â€œpassingâ€. This work takes issue with the idea that â€œpassingâ€ is an a priori non-causal event, by noting its similarities with the â€œbraking effectâ€ studied by Michotteâ€™s collaborators. Two localisation response modalities (mouse and pointer) were used in displays where a square travelled across a screen with either a textured stripe of background or a steady rectangle (same height as the square). Target velocity, passing surface (stripe vs. rectangle-object), extent of passing, trajectory layer (in front vs. behind) and targetâ€™s travelled distance were crossed in a full factorial design. Overall results suggest the presence of subjective causal properties in these displays, meaningfully captured by RM.