Abstract
This study was undertaken to determine whether objective measures of reading performance are affected by short exposure to text on a display when glare is present. Reading performance was assessed using reading time and correctness of answers as measures. In a preliminary experiment 20 reading passages were ranked according to subjective reading difficulty and also according to an objective measure. Subsequently, in the main experiment subjects read the 20 passages presented on a VDT under both no-glare and glare conditions. When task difficulty was measured by subjective ranking, glare was found to increase the amount of time required to read relatively easy passages and to decrease the amount of time required to read relatively difficult passages. Other findings included a general increase in reading time and a decrease in the proportion of correct answers with increases in task difficulty for both subjective and objective ranking of difficulty.
Published Version
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