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...

Using lower-case fonts varying only in serif size (0%, 5%, and 10% cap height), we assessed legibility using size thresholds and reading speed. Five percentage serif fonts were slightly more legible than sans serif, but the average inter-letter spacing increase that serifs themselves impose, predicts greater enhancement than we observed. RSVP and continuous reading speeds showed no effect of se...

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...

legibility is one of the most important characteristics of good urban environments which improves the communication between people and place by helping them to perceive and recognize their environment more deeply and precisely. unfortunately, achieving legibility in today’s urban environments has become very hard due to the increase in incoherent developments and partial renovation projects. mo...

[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...