Fig. 3From: Age-related differences in the legibility of degraded textExperiment 2, mean performance thresholds (blur level or noise level at which participants achieved 75% accuracy) for older and younger participants. a Mean blur threshold by age group and illumination condition, showing a significant difference by age group but no difference by illumination condition. b Mean noise threshold by age group and illumination condition, showing no effect of age group and no difference by illumination conditionBack to article page