Resources for Communication Problems

Sunday, January 20, 2008

LB304-307智源

LB304-307智源

內文:

IV. FURTHER ELUCIDATION OF LANGUAGE ACQUISITION THROUGH THE STUDY OF DEFECTIVE CHILDREN

The study of the biological basis of behavior in man is severely handicapped by the impossibility of doing crucial experiments that systematically interfere with physiology. Growth of structure, and development. We must, therefore, take resource to pathological deviationstheseof courseare never controlled situations and therefore introduce inaccuracies, but since we have nothing more exact to study ins place, the experimental shortcomings must be taken into account and accepted as inevitable. Simply to ignore or overlook these phenomena is inexcusable as it may result in theories that are flatly contradicted by pertinent facts in pathology.

It is often said that it is difficult enough to understand the development of behavior in the healthy individual and that we should, therefore, not complicate our task by trying to understand at the same time behavioral development in the presence of disease. Such a statement is based on the false assumption that disease result in more complicated behavior. however, we may consider it axiomatic that disease processes do not usually add to the complexity of structure of behavior. Disease may distort or modify some aspects of behavioror it may block inhibitions or eliminate balancing components of the behavioral structure, throwing development or performance into disequilibrium, such that one component becomes much more prominent than anotheror it may eliminate certain superstructures, thus bringing more primitive layers of behavioral into prominence. But disease will not ordinarily produce behavior that goes beyond the level of complexity which is norm. It might often be dangerous to study merely one disease process and then make generalizations based on this one type of pathology. Howeverif we view a given behavior pattern in the light of a whole spectrum of pathological modifications, we may be able to attain some insight into aspects of that behavior not ordinarily seen.

(1)Language Lacquisition in the Absence Speech Production

Most psychological theories on language acquisition assume that the conditio sine quo non for this development is presence of an appropriate response system(most recently emphasized by Premack and Schwartz,1966)namely random babbling, thatmay be shaped into wordsphrases and complete and mature utterancesIt is a fundamental assumption here that responding is priorin a senseto understandinghoweverthere is a type of childhood abnormality that contradicts this assumptionThese are children with an inborn disability to coordinate their muscles of the vocal tract sufficiently to produce intelligible speechThe disturbance is seen in varying degree ranging from mild impediment to congenital anarthria.

I have had an opportunity to study one such case in great detail over a five-year periodThis was a child who was nine years old when seen lastHe has never been able to babble orwith advancing ageto say anything at allbut there can be no question that he has complete understanding of EnglishOver the years much material was collected about this case including detailed medical prenatal and postnatal historiesneurological examinationsfamily and social historieslaboratory and psychological test results(repeated at various intervals),X-rays and electroencephalographyobservations during free play in the child’s home and in my officerecords were kept during attempts to train him in speech(unsuccessfully),and a report is available on daily private tutoring throughout one summerThis was conducted as a demonstration project to teach this totally inarticulate child the elements of readingThe latter was relatively successful.*The technique used is of considerable interestthe child demonstrated his ability to read by learning to match pictures to words and simple sentencesAbsence of articulation should not be automatically regarded as a hindrance to instructing inarticulate children in the three R’s.

The technical details and background for this case are reported in Lenneberg(1962) and a discussion of the etiology of this condition may be found in Lenneberg(1964).

Some details of the patients communication behavior may be worth reporting here.

His crying and laughter had sounded normal since birthHe was able to make other noisesfor instanceshortcough-like gruntsaccompanying his pantomimed communicationsWhile playing alonehe would readily make noises that sounded somewhat like Swiss yodeling(though he had never had any experience with these sounds) and which do not resemble any kind of vocalization heard among normal American childrenWhen I first saw himhe appeared to have some difficulty in bringing his voicing mechanism under voluntary controlFor instancehe was unable to make the pointer of the VU meter in an Ampex tape recorder jump by emitting grunts into a microphone even though he was fully aware of the logical connection between sound and deflection of the pointer and was fascinated by ithe would hold on to microphone and move his head and lips toward it as if to prompt himself for the actionafter a few futile attempts and with signs of rising frustrationhe wouldin desperationgesture to the examiners mouthinviting him to make the needle jump, or else simply resort to clapping his hands and accomplish his end this wayWith advancing age he learned to control his vocal apparatus to a greater extentAt the time he was last seen he would repeat-with a considerable show of strain-a few wordsbut the words were barely intelligible and were never produced without support from the speech correctionist or the motherThey had to say the words simultaneously with him.

Some of the spontaneous sounds emitted by the patient at four years were analyzed spectrographicallyThe spectrograms are grossly abnormal for a child of this age and resemble those of a neonate in a number of respectssuch as the unsteadiness in the formant patternthe intermittent bursts of nonharmonic overtonesand the almost random change in resonance distribution over the spectrum(Lenneberg,1962).The spectrograms may be interpreted either as grossly immature or as evidence of a fixed central nervous system abnormality implicating the basic mechanisms for speech synergism.

From the patients first visit to the clinic it had been obvious that he had a normal and adequate understanding of spoken languageHe has been more than twenty times since thenand full comprehension has been confirmed by neurologistspsychologistsspeech therapistsmedical residentsand teachersA number of tape recordings have been made of interviewsincluding a visit to the patients homeMost of the examinations were done without the presence of his motherAt one timea short series of instructions were tape recorded and transmitted to the patient through earphonesHe followed the instructions without being able to see the examiner.

At the age of eight his capacity to comprehend was fully documented in a 16-millimeter sound film which is publicly available.*The film was not rehearsed and the interviewer had been known to patient by sight onlyThe demonstration includes the following itemsability to chewswallowand sucksounds emitted while playing at age fourtape recordings of mothers-”conversation”-with subjectrecorded during a home visitfollowing commands and answering questions by noddinga short story is told followed by questions on it which are couched in complex grammatical constructions.

*1Carried out in cooperation with the Harvard School of Educationspecial thanks are to Dr.Helen Popp and Dr.Joel Weinberg.

*2The Acquisition of Language in a Speechless Child16-millimeter sound filmRunning time is 18 minutesdistributed by cinema registerPennsylvania State University.

摘要:

關於人們生理的根本行為研究幾乎受到阻礙,不太可能做有系統性的實驗,由於它干擾到人體的生理。人體隨著結構的成長還有發展,我們必須求助於pathological deviations。當然,它是不能被控制狀況還有引進錯誤,因為我們對精確的研究它的地方毫無所知,此外,實驗性的缺點必須被算入,並無可避免的接受。簡化地忽略這些現象是不可避免的,雖然它會造成和病理學相關的理論事實有所牴觸、矛盾。

通常要了解個體健康行為的發展是一件很困難的事情,所以我們不應該藉著嘗試了解行為的發展,同時有個體有疾病的存在來使我們的實驗複雜化。疾病造成複雜行為是一句依據錯誤假設的言論。我們應該明白疾病並不是通常造成行為結構的複雜性。疾病或許會扭曲、修改行為的角度;甚至於阻礙抑制或者消除平衡行為結構的元素,使得行為的發展發現變的不安定的,像是原本其中一個元素比其他的元素還要更加明顯,或者消除了上層的結構,讓原先的內部行為層變的更加突出。但是疾病並不會是產生行為,然後它超越正常結構的複雜性階段。假使只是研究疾病的階段然後就下定結論它是病理學其中的一種型態,這們做是很危險的。假使我們以觀看一個特定的行為範本,然後以看光譜層的方式,來看病理症狀改變,我們將會得到一些原本沒有發現的行為一些見識。

多年以前,作者研究一個九歲的孩童的個案,長達五年的時間。這名孩子並不會呀啞的說話,隨著年紀的增長,情況並未改善,儘管他完全的了解英文。他有能力產生一些咕嚕聲,伴隨著手勢溝通。當獨自玩耍時,他會發出如瑞士人的聲音,這種發音方式並不像是屬於從一群美國孩童發出來的語音。但隨著他構音器官的成熟,他可以重複一些簡單的字,然而這些字並不清楚,若無專家或者母親的提示,他幾乎很少發出來。經過一段時間資料的收集,觀察孩童在家或者辦公室獨自玩耍,嘗試教導他言語,但不很並成功。然而,經過一個暑假的私人的教導,最後原本有語言疾病的孩童,可以發出一些簡單的句子還有用圖片對比到單字上,而缺乏正確的發音孩童並不能自動地視為一種教導他們發音的阻礙。

從病人第一次進入診所,作者明顯的知道他對所講的母語有適當的了解。經過二十多次的診療實驗,他對語言全然的理解,而這經過需多專家的審核。許多檢查,即使他的媽媽並沒有在場,也能做好。有一次,有一短暫的指示透過耳機撥放給病人聽,他不需要看著檢查者也能依循著指示,如藉著點頭回答問題或者透過問題,來表達簡短的故事,而這個故事要有複雜文法結構等。

多數關於語言機制的理論假設在一個必然的情況中,對於反應系統的存在是適當性的。毫無頭緒嬰兒的呀啞語,像是單字、句子等,然後它將會變成成熟的言語。反應是較早出來的基本假設是可以被理解的。然而,另外有一種孩童不正常幼年時期的型態與先前的理論牴觸。這些小朋友不太能去協調他們聲帶的肌肉,然後去產生可理解的言語。這種憂慮可從輕度的口吃到先天性的言語呐疾被看出來。

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