a decreasing trendp < 0.001
Crucially, whereas no differences in pupil dilation across time was observed when the participants themselves and when the co-participants were exposed to potential shocks, B = − 0.007, SE = 0.008, χ 2 (1) = 0.71, p = 0.40, pupil dilation in the safe condition showed a decreasing trend over time, B = − 0.09, SE = 0.01, χ 2 (1) = 25.74, p < 0.001.