The second someone asks, 'Did you see that?' they’ve already messed up your memory of what actually happened.
March 27, 2026
Original Paper
The act of detecting a stimulus contaminates measures of conscious experience with decision biases
PsyArXiv · yqa32_v4
The Takeaway
Researchers found that 'detection tasks'—the standard way scientists measure awareness—introduce decision-making biases that don't exist in natural perception. This suggests that by simply asking a person to report what they see, we are fundamentally altering how they remember and reproduce the experience.
From the abstract
A central challenge in consciousness research is determining whether observers have a conscious experience of a stimulus. However, present/absent detection judgments are often biased by contextual factors, making it difficult to isolate conscious perception from non-perceptual influences. Traditional psychophysical methods struggle to disentangle these components. To address this, we conducted in-person experiments (N=505) in which participants detected and reproduced dim and absent contrast def