Three experiments were conducted to investigate the effects of adults aging upon the legibility of simulated symbol highway signs. Each experiment employed a different set of lighting conditions: (1) daytime luminance, (2) nighttime luminance, and (3) nighttime luminance with glare. Young (ages 18-25) and middle-aged (ages 40-55) observers demonstrated small reductions in legibility when lumina...

This report describes the findings of a study in symbol legibility which investigated the reading time and errors for common five-letter words when they are projected by a solid stroke and when they are shown by a broken stroke. The latter was produced on a 945-line TV monitor at 10, 7, and 5 active lines per symbol height. This study is similar to an earlier report on the readability of common...

[Purpose] The purpose of this study was to examine the effect that fine motor skills have on handwriting legibility in children of preschool age. [Subjects and Methods] The subjects of this study were 52 children of normal growth and development. In order to ascertain handwriting legibility, a Korean alphabet writing assessment was used; to measure fine motor skills, fine motor precision and ma...

How does handwriting legibility affect the performance of algorithms that link individuals across census rounds? We propose a measure legibility, which we implement at scale for 1940 U.S. Census, and find strikingly wide variation in enumeration-district-level legibility. Using boundary discontinuities enumeration districts, estimate causal effect low on quality linked samples, measured by link...