We often believe that seeing is believing—but when it comes to true certainty, we tend to rely even more on what we can physically feel. A special new study from the ConTakt Lab at TU Dresden dives into a fascinating psychological paradox: our inherent bias toward trusting touch over vision, even when our eyes are objectively more accurate.

The study, titled “The Illusion of Certainty: Why we over-trust our sense of touch”, was published in a special issue of Multisensory Research. It marks a deeply meaningful milestone for the team, as it represents the final collaboration with the late, pioneering haptics researcher Vincent Hayward, to whose memory this work is dedicated. The paper was co-authored by [Name(s) of the Dresden Authors, e.g., and colleagues from the ConTakt Lab] and Vincent Hayward.

The Phenomenon: Overconfidence in What We Can Feel

We have a natural, deeply ingrained tendency to trust our hands. To investigate why we exhibit this “haptic overconfidence,” the researchers designed two implicit testing measures. They presented participants with ambiguous, illusory stimuli where visual performance was objectively superior to touch. Yet, the behavioral results revealed a striking preference:

  • Preference for Touch: When given the choice to re-evaluate a shape, participants were significantly more likely to choose to double-check using touch rather than vision.

  • The Weight of Haptics: Participants were far more willing to change their minds and adjust their decisions after experiencing the ambiguous shapes through tactile feedback, trusting it over their visual cues.

Why This Matters for the Tactile Internet

Understanding this cognitive bias is not just a triumph for cognitive psychology; it is highly critical for the future of Human-in-the-Loop engineering.

If humans naturally trust tactile feedback more than visual data—even when the tactile interface is technically less precise—the design of haptic systems in virtual reality (VR), teleoperation, and medical robotics carries immense responsibility. Engineers must design these interfaces with extreme care, as even minor miscalibrations can lead to human error, cognitive misjudgment, and potential safety or ethical risks.

In Memory of Vincent Hayward

This publication stands as a tribute to Vincent Hayward’s groundbreaking contributions to the field of haptic perception and his long-standing, inspiring collaboration with researchers at TU Dresden.

The full study is published in the special issue of Multisensory Research. You can access the paper here.

Authors: 

This work was conducted at the ConTakt Lab, TU Dresden, in connection with the Cluster of Excellence CeTI.