Deciding while moving: Proximal response features of movement cause cognitive crosstalk
Wed-P3-Poster III-201
Presented by: Philipp Raßbach
Humans often find themselves in situations during which they must decide while moving (e.g., when playing soccer, driving a car). During such embodied choice situations, reward-based decisions are not only biased by the motor cost to act, but also dimensional features of concurrent movement. However, prior studies did not assess whether dimensional features of movement per se (proximal features) or effects caused by the movement (distal features) give rise to this cognitive crosstalk. To disentangle these, we manipulated the mapping between movement (proximal features) and visual effects (distal features) of movement. Participants worked on a multilane tracking task (for details, see Raßbach et al., 2021) in which they controlled a cursor moving across one of three horizontal lanes. The cursor was constantly perturbed either upward or downward, requiring scrolling downward/upward with the mouse wheel to counteract the perturbation. The mapping of this tracking task was congruent (e.g., scrolling downward = moving cursor downward) or incongruent (e.g., scrolling downward = moving cursor upward). Participants also made reward-based decisions by performing mouse movements forward or backward to switch to the upper or lower lane, respectively, to collect point rewards on the specific lane. Results showed that decisions were biased by the perturbation, with the direction the effect being almost completely reversed between response mapping conditions (i.e., preference to switch to the upper lane when scrolling upward and vice versa). This suggests that dimensional features of movement are responsible for cognitive crosstalk, while distal features do not seem to play a pivotal role.
Keywords: Embodied choice, Cognitive-motor interference, Multitasking