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 that they knew their own name-letters were there. The letters first learned by a child, commonly their own name, may come to have lasting positive associations. Hoorens and Todorova tested this by looking for a name-letter effect in bilingual subjects where their mother tongue alphabet was Cyrillic and their foreign-language alphabet Roman. Because learning a foreign language at a later age does not typically involve extra attention given to name letters, there should be no name-letter effect in the foreign-language alphabet, only in the first-language alphabet. Results of a study with 100 Bulgarian subjects who at a later age learned