Eye chart number). The denominator indicates the distance in feet at which a person with normal vision could stand to correctly identify the same symbols identified by the person tested. For example, a visual acuity of 20/20 is considered normal. Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision. There is often also a need to test a subject's vision at near or occupational tasks (such as reading or computer use). For these situations, a Rosenbaum
Name-letter effect once according to estimated letter frequency. Subjects indeed significantly overestimated the frequency of letters in their names, although there was no significant positive correlation between the overestimation of frequency and the name-letter effect. The researchers also asked subjects to rate how much they liked their own name. Subjects who liked their name had a stronger name-letter effect than those who did not like their name, but they did not overestimate the frequency of own-name letters more than subjects who did not like their names. Hoorens and Nuttin concluded that there is no support for the subjective frequency hypothesis. Evaluative conditioning