Triangulating decision-making via choices, eye fixations, and reaching trajectories

People often face choices that involve tradeoffs over time or under uncertainty. While these decisions have been widely studied, most research focuses on the final choice rather than the process leading to it. In this paper, we combine two process-tracing tools, eye-tracking and mouse cursor tracking, to observe how decisions unfold in real time. Across two incentive-compatible experiments, we find that both visual attention and mouse movements predict choice, and together they provide complementary, non-overlapping insights. These tools also reveal how seemingly minor factors, such as where information appears on a computer screen, can influence decisions. By capturing the dynamics of the decision-making process, this approach offers valuable implications for organizations aiming to better understand, predict, or shape behavior.