The Deaf. Harry Best
Ability of the Deaf to Speak
We have just seen that "dumbness" frequently follows upon deafness, or that it is usually believed to be an effect of deafness. It is true that with the majority of the deaf phonetic speech is not employed to any large extent; but there is at the same time a fair number who can, and do, use vocal language. This speech varies to a wide degree, in some approximating normal speech, and in others being harsh and understood with difficulty; and it depends in the main upon three conditions: 1. the age at which deafness occurred, this being the most important factor; 2. the extent to which the voice is cultivated; and 3. the remaining power of the ear (which is found but seldom).[8]
Of the deaf persons enumerated in the census,[9] 21.5 per cent were reported able to speak well; 15.8 per cent imperfectly; and 62.7 per cent not at all. In other words, somewhat over a third of the deaf can speak more or less, one-fifth being able to speak well, and one-sixth imperfectly, while over three-fifths do not speak at all. The dependence of the ability to speak upon the age of becoming deaf is clearly in evidence here, the proportion of those not able to speak showing a great decrease with the rise of this age. Thus, of those born deaf, 83.5 per cent cannot speak at all; of those becoming deaf after birth and under five, 74.6 per cent; of those becoming deaf after five and under twenty, 26.5 per cent; and of those becoming deaf after twenty, 3.4 per cent.
Some of the deaf are able to read the lips of the speaker, or as it is better expressed, to read speech, or to understand what is being said by watching the motions of the mouth. This in reality is a distinct art from the ability to speak, though popularly they are often thought to be co-ordinate or complementary one to the other. Like the ability to speak, it varies in wide degree, from the ability to understand simple and easy expressions only, to the ability to follow protracted discourse; and like the ability to speak, it is found in increasing frequency with the rise of the age of becoming deaf. According to the census,[10] 38.6 per cent of the deaf are able to read the lips. Of those born deaf, 28.0 per cent have this ability; of those becoming deaf after birth and under five, 37.1 per cent; of those becoming deaf after five and under twenty, 64.3 per cent; and of those becoming deaf after twenty, 43.6 per cent.[11]
Means of Communication Employed by the Deaf
If the larger number of the deaf do not use the speech which is used by those who can hear, how is it that their communication is carried on? The chief method is a certain silent tongue peculiar to the deaf, known as the "sign language,"[12] a part of which may be said to be the manual alphabet, or the system of finger-spelling,[13] the two usually going hand in hand. In this way most of the deaf are enabled to communicate with each other readily and fluently. But this language, or at least the greater part of it, not being known to people generally, the deaf frequently have to fall back on writing to convey their ideas in communicating with hearing persons. This, while slow and cumbersome, is the surest and most reliable method of all. In addition, as we have seen, a certain number of the deaf are able to use speech, which of course has manifold advantages. These are the several methods, then, of communication employed by the deaf; but they are not usually employed singly, as most of the deaf are able to use two or more. According to the census,[14] the sign language alone or in combination with other methods is employed by 68.2 per cent, or over two-thirds of the deaf; finger-spelling by 52.6 per cent, or over one-half; writing by almost the same proportion—51.9 per cent; and speech by 39.8 per cent, or some two-fifths. It is probable, however, that the proportions employing the sign language, finger-spelling and writing, either singly or with other methods, are really somewhat larger. In this case, likewise, we find that the lower the age of becoming deaf, the smaller is the proportion of the deaf with speech, which shows again the connection of the ability to speak with the age of the occurrence of deafness. Of those born deaf, speech alone or in combination with other methods is used by 18.2 per cent; of those becoming deaf after birth and under five, by 27.4 per cent; of those becoming deaf after five and under twenty, by 75.3 per cent; and of those becoming deaf after twenty, by 97.7 per cent.
FOOTNOTES:
[1] There are no sharply dividing lines between the different degrees of deafness, but it is only those described that really constitute a special class. Persons whose hearing is such as to be of use even in some slight degree are rather to be distinguished as "hard of hearing."
[2] By this census both the partially deaf and the totally deaf were enumerated, or 89,287 in all. The former should not have been enumerated, the enumerators being instructed not to include those able to hear loud conversation.
[3] For the census returns for 1900, see "Special Reports of the Census Office. The Blind and the Deaf," 1906. This report was under the special direction of Dr. Alexander Graham Bell, who has long been interested in the deaf. The returns of the census for 1910 are yet to be revised, while at the same time additional data are to be secured to be published as a special report like that of 1906. As yet the census office has for 1910 only the actual enumeration of the deaf and dumb in the various states, and the returns with respect to other particulars regarding them are yet to be completed. See Volta Review, xiii., 1911, p. 399. Hence in our discussions we shall, except for the number by states, deal with the census of 1900. For a review of this census, see American Annals of the Deaf, Sept., 1906, to May, 1907 (li., lii.). In a number of states certain county officers are required from time to time to enumerate the deaf. For a census in one state, see Bulletin of Labor of Massachusetts, July-Aug., 1907.
[4] Included in the census of 1900 were 491 deaf-blind persons (totally deaf), and in that of 1910, 584.
[5] From statistics kindly furnished by the Census Bureau.
[6] This is just the opposite of the case with the blind.
[7] Special Reports, 1906, p. 79. Some 2,000 cases were thrown out for indefinite replies, leaving 35,479, upon which our