Mean performance (±SEM) in a range of physical and cognitive tests for the five groups classified according to road-crossing behaviour in the task crossing. For each graph, the triangle points in the direction of better performance. A,B,C,D. Tests of basic function (visual contrast sensitivity, visual acuity, simple reaction time, strength). E,F,G. Tests of standing balance control (sway, voluntary balance control, maximal reach). H,I,J. Tests of walking and stepping function (walking speed, stand and walk time, choice stepping reaction time). K,L,M. Cognitive tests of search and set shifting (TrailsB, TrailsA, TrailsB—TrailsA). N. Arrival prediction error of the moving object. O. Arrival prediction error of the imagined walk. X shows the overall function score as a z-score average across all tests.