Absolute, not perceived, delay modulates agency judgement: Evidence for cognitive impenetrability of sense of agency

The sense of agency, which refers to awareness of causing events, is consistently influenced by the time interval between actions and their outcomes such that longer delays diminish the perceived strength of the agency. This study investigated whether the sense of agency is modulated by the distance between experienced delays or by their subjective discriminability, which is known to be subject to Weber's law (discriminability being a function of ratios rather than absolute differences between time intervals). To this end, participants executed keypress actions leading to outcomes at varying delays. In one experiment, delays were equidistant on a logarithmic scale (constant ratio relationship), while in the other experiment, they were equidistant on a linear scale (constant distance relationship). Our results showed that judgments of the agency were predicted better by actual temporal proximity between actions and outcomes compared with their subjective discriminability. Beyond providing a more complete picture regarding the effect of outcome delays on the sense of agency, these findings have broader implications for the mechanistic underpinnings of the sense of agency. They imply that even explicit judgments of agency can be influenced by certain factors transcending conscious experience.