The left-digit bias in two-dimensional manual pointing.

= 23). After correcting for cyclical errors in angular localization, we found that targets sharing the same leftmost digit were indeed placed closer together in angular space than equidistant targets with different leftmost digits, regardless of visual feedback. This LDB manifested as compression of decimal targets toward the lower boundary of their leftmost digit category. Our findings demonstrate the robustness of LDB signatures across task settings, extend them to angular measures, and point to cognitive rather than perceptual origins. They are consistent with the overweighting of leftmost digits during number processing, which asymmetrically compresses representational space toward lower same-digit boundaries. (PsycInfo Database Record (c) 2026 APA, all rights reserved).