Eye chart chart or Jaeger chart can be used. While the Snellen chart remains the default, some authors have argued that the logMAR chart is superior. The logMAR chart presents the same number of symbols on each line, uses a typeface with letters that are equally legible at various sizes, and by varying the symbol size logarithmically, it is easier to use at nonstandard distances. As a consequence of these improvements, the logMAR chart has been proposed as a more reliable tool for measuring visual acuity. However, the logMAR chart has not yet been widely adopted. It can be difficult to measure
Name-letter effect to rank the English alphabet by the pleasantness of the appearance of capital letters. While there was not a great deal of agreement amongst the subjects (the coefficients of concordance were low), a strong positive correlation was found between a letter's average rank and how frequently it occurred as an initial letter of family names. Robert Zajonc, a social psychologist, published research in 1968 into preferences between pairs of words (e.g. "on" or "off"): in the overwhelming majority of trials the preferred word was also the most common. Zajonc also tested preferences for nonsense words and found that people liked