Diagnostic and Educational
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Wikipedia-Article "Diagnostic"
Diagnosis (from the Greek words dia = by and gnosis = knowledge) is the process of identifying a disease by its signs, symptoms and results of various diagnostic procedures. The conclusion reached through that process is also called a diagnosis.
The term "diagnostic criteria" designates the combination of symptoms which allows the doctor to ascertain the diagnosis of the respective disease.
Typically, someone with abnormal symptoms will consult a physician, who will then obtain a history of their present illness and examine them for signs of disease. The physician will formulate a hypothesis of likely diagnoses and in many cases will obtain further testing to confirm or clarify the diagnosis before proceeding to render treatment.
Forms of testing commonly performed are urine tests, stool samples, saliva samples, blood tests, medical imaging, electrocardiogram, urinalysis and, occasionally, biopsy.
The list of most likely and possible diagnoses based on available information is called a differential diagnosis; the final diagnosis is only arrived at after other diseases on this list have been eliminated through further investigations or consultations.
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History
The history of medical diagnosis began in earnest from the enlightened days of Hippocrates in ancient Greece but is far from perfect despite the enormous bounty of information made available by medical research including the sequencing of the human genome. The practice of diagnosis continues to be dominated by theories set down in the early 1900s.
Ancient Greece
Over two thousand years ago, Hippocrates recorded the association between disease and heredity. In similar fashion, Pythagoras noted the association between metabolism and heredity (allergy to Fava beans). The medical community, however, has only recently acknowledged the importance of genetics and its relevance to mainstream medicine.
The Oslerian ideal
The ideals of William Osler who innovated the practice of medicine in the early 1900s were based on the principles of the diagnosis and treatment of disease. According to Osler, the functions of a physician were to be able to identify disease and its manifestations, understand its mechanisms, how it may be prevented and how it may be cured. For his medical students he believed that the best textbook was the patient himself – analysis of morbid anatomy and pathology were the keys. The Oslerian ideal continues today, as the basis of the Doctor’s strategy is, "What disease does this patient have and what is the best way for treatment?" The emphasis is on the classification of the disease in order to use the remedies available for its effects to be reversed or ameliorated. The human being in question is representative of a class of people with this type of disease whereas the biological individuality of this person is not given any great weight.
Garrod's view
The successor to William Osler as Regius Professor at Oxford was Archibald Garrod. Garrod echoed the observations of his Greek counterparts of two millennia ago, ...our chemical individualities are due to our chemical merits as well as our chemical shortcomings; and it is more nearly true to say that the factors which confer upon us our predispositions to and immunities from various mishaps which are spoken of as diseases, are inherent in our very chemical structure; and even in the molecular groupings which confer upon us our individualities, and which went into the making of the chromosomes from which we sprang. Considering that the time that he formulated these ideas were the early 1900's, and the knowledge of DNA encoding genes that in turn encoded proteins responsible for bodily structure and functions not being discovered until some fifty years later it took some time before medicine could fully appreciate the fundamental importance of his concept of diagnosis.
Present-day Oslerian practice
Whereas Osler laid the founding principles by which medicine should be practiced, Garrod placed these principles in a greater context of a chemical individuality that is inherited and is subject to the mechanisms of evolutionary selection. The Oslerian ideal of medical practice continues to dominate medical philosophy today. The patient is a collective of symptoms to be characterised and analysed algorithmically in order to draw a diagnosis and subsequently produce a strategy of treatment. Medicine is about problems based solutions. In keeping with this philosophy, today's pathology reports provide a momentary snapshot of the patient's biochemical profile, highlighting the end result of the disease process.
Influence of DNA technology
Garrod's conception of biological individuality was confirmed with the advent of the sequencing of the human genome. Finally the subtle relationship between inheritance, individuality and environment became apparent via the variations detected in DNA. In each patient's DNA lies a script for how their bodies will change and become ill as well as how they will handle the assaults of the environment from the beginning of their life to its end. It is hoped that by knowing a patient's genes that the biological strengths and weaknesses in respect to these assaults will be revealed and disease processes can be predicted before they have the opportunity to manifest. Although knowledge in this area is far from complete, there are already medical interventions based on this. More importantly, the physician, forewarned with this knowledge can guide the patient towards appropriate lifestyle changes to anticipate and mitigate disease processes.
Hypothesis testing
History taking is a fluid process that adapts to the information as it is presented. Almost invariably the patient presents with a complaint. Even the unconscious patient presents with the implicit complaint of being unconscious. This presenting complaint leads to the formation of hypotheses. Rather than consider the myriad of diseases that could afflict the patient, the physician narrows down the possibilities to those conditions likely to account for the presenting complaint. The history taking then proceeds to test these hypotheses, often narrowing down the diagnosis within a few questions. Sometimes the initial hypotheses are ruled out and the physician must then move on to look at other hypotheses or multiple ones. Occam's razor is then invoked to attempt to simplify the number of provisional diagnoses and it is only with some reluctance that a physician will make several provisional diagnoses to explain the symptoms elicited.
The physician then moves on to the physical examination. However, the hypothesis testing does not end at this point. Signs may confirm the provisional diagnosis or cause the physician to consider the question further and even lead to more questioning. An unexpected finding on examination may cause the physician to reconsider the initial diagnosis.
At this point the physician usually has at least a differential diagnosis and probably a provisional diagnosis if not a firm diagnosis. Further tests are then requested, in part to confirm or disprove the diagnosis but also to document the status at that time and before treatment is started. Consultations with other physicians and specialists in the field may be sought.
Treatment itself may indicate a need for review of the diagnosis if there is a failure to respond to treatments that would normally work.
Despite all of these complexities, most consultations are relatively brief, partly because many diseases are common and pattern recognition allows the physician to recognize the diagnosis early, but also because the decision trees of most hypothesis testing are relatively short.
See also
Wikipedia-Article "Educational"
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Education is a social science that encompasses teaching and learning specific knowledge, beliefs and skills. Practicing teachers in the field of education use a variety of methods and materials in their instruction to impart a curriculum. There has been a plethora of literature in the field of education that addresses these areas. Such literature addresses the facets of teaching practices to include instructional strategies, behavior management, environmental control, motivational strategies, and technological resources. However, the single most important factor in any teacher's effectiveness is the interaction style and personality of the teacher, for the quality of their relationships with the students provides the impetus for inspiration. The best teachers are able to translate good judgment, experience, and wisdom into the art of communication that students find compelling. It is their compassion for varied human qualities, passion, and the creativity of potential that assists teachers to invigorate students to higher expectations of themselves and society at large. The goal of education is the growth of students so that they become productive citizens of a dynamic, everchanging, society. Fundamentally, the imparting of culture from generation to generation (see socialisation) promotes a greater awareness and responsiveness through social maturity to the needs of an increasingly diversified society.
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Overview
It is widely accepted that the process of education begins at birth and continues throughout life. Some believe that education begins even earlier than this, as evidenced by some parents' playing music or reading to the baby in the womb in the hope it will influence the child's development.
The word 'education' is often used to refer solely to formal education (see below). However, it covers a range of experiences, from formal learning to the building of understanding through day to day experiences. Ultimately, all that we experience serves as a form of education.
Individuals can receive informal education from a variety of sources. Family members and society have a strong influence on the informal education of the individual.
Origin of the term "education"
The word "education" is derived from the Latin educare meaning "leading out" or "leading forth". This reveals one of the theories behind the function of education - of developing innate abilities and expanding horizons.
Formal education
Formal education occurs when society or a group or an individual sets up a curriculum to educate people, usually the young. Formal education can become systematic and thorough. Formal education systems can be used to promote ideals or values as well as knowledge and this can sometimes lead to abuse of the system.
Life-long or adult education has become widespread in many countries. However, 'education' is still seen by many as something aimed at children, and adult education is often branded as 'adult learning' or 'lifelong learning'.
Adult education takes on many forms from formal class-based learning to self-directed learning. Lending libraries provide inexpensive informal access to books and other self-instructional materials. Many adults have also taken advantage of the rise in computer ownership and internet access to further their informal education.
Technology and education
Technology has become an increasingly influential factor in education. Computers and associated technology are being widely used in developed countries to both complement established education practices and develop new ways of learning such as online education (a type of distance education). While technology clearly offers powerful learning tools that can engage students, research has provided no evidence to date that technology actually improves student learning.
History of education
In 1994 Dieter Lenzen, president of the Freie Universität Berlin, said education began either millions of years ago or at the end of 1770. (The first chair of pedagogy was founded at the end of the 1770s at the University of Halle, Germany.) This quote by Lenzen includes the idea that education as a science cannot be separated from the educational traditions that existed before.
Education was the natural response of early civilizations to the struggle of surving and thriving as a culture, requiring adults to train the young of their society in the knowledge and skills they would need to master and eventually pass on. The evolution of culture, and human beings as a species, has depended on this practice of transmittining knowledge. In pre-literate societies this was achieved orally, story-telling from one generation to the next. As oral langauage developed into witten symbols and letters, the depth and breadth of knowledge that could be preserved and passed increased exponentially.
As cultures began to extend their knowledge beyond the basic skills of communicating, trading, gathereing food, religious practices, etc., the beginnings of formal education, schooling, eventually followed. There is evidence that schooling in this sense was already in place in Egypt between 3000 and 500BC.
Basic education today is considered those skills that are necessary to function in society.
Europe
In the West, the origins of education are associated with organized religion: priests and monks realised the importance of promoting positive virtues in the young and founded, maintained, and staffed school systems. In Europe, many of the first universities have Catholic roots. Following the Reformation in Scotland the newly established national Church of Scotland set out a programme for spiritual reform in January 1561 setting the principle of a schoolteacher for every parish church and free education for the poor. In 1633 an Act of the Parliament of Scotland introduced a tax to pay for this programme, and by the end of the 17th century education in Scotland brought literacy to much of the population, with the system being used by all except the nobility.
During and following the Age of Enlightenment the association between religion and education became diminished. Jean-Jacques Rousseau fuelled an influential early-Romanticism reaction to formalised religion-based education at a time when the concept of childhood had started to develop as a distinct aspect of human development.
The Polish-Lithuanian Commonwealth's Commission of National Education (Polish: Komisja Edukacji Narodowej, Lithuanian: Nacionaline Edukacine Komisija) formed in 1773 counts as the first Ministry of Education in the history of mankind.
Conventional social history narrates how by about the beginning of the 19th century the industrial revolution promoted a demand for masses of disciplined, inter-changeable workers who possessed at least minimal literacy. In these circumstances, the new socially predominant structure, the state, began to mandate and dictate attendance at standardised schools with a state-ordained curriculum. Out of such systems the general and vocational education paths of the 20th century emerged, with increasing economic specialisation demanding increasingly specialised skills from a population which spent correspondingly longer periods in formal education before entering or while engaged in the workforce.
China
The origins of education in China are tied up with the Chinese classic texts, rather than organized religion, per se. The early Chinese state depended upon literate, educated officials for operation of the empire, and an imperial examination system was established in the Han Dynasty (206 BC-220) for evaluating and selecting officials. This merit-based system gave rise to schools that taught the classics and continued in use for 2,000 years, until the end the Qing Dynasty, and was abolished in 1911 in favour of Western education methods.
Japan
The origins of education in Japan are closely related to religion. Schooling was conducted at temples for youngsters who wanted to study Buddhism to become priests. Later, children who were willing to study started to meet at places called, "Tera-koya" (literally meaning temple huts) and learned how to read and write Japanese.
India
Main article: Education in India
India has a long history of organized education. The Gurukul system of education is one of the oldest on earth, and was dedicated to the highest ideals of all-round human development: physical, mental and spiritual. Gurukuls were traditional Hindu residential schools of learning; typically the teacher's house or a monastery. Education was free, but students from well-to-do families payed Gurudakshina, a voluntary contribution after the completion of their studies. At the Gurukuls, the teacher imparted knowledge of Religion, Scriptures, Philosophy, Literature, Warfare, Statecraft, Medicine Astrology and History (the Sanskrit word "Itihaas" means History). The first millennium and the few centuries preceding it saw the flourishing of higher education at Nalanda, Takshashila University, Ujjain, & Vikramshila Universities. Art, Architecture, Painting, Logic, Grammar, Philosophy, Astronomy, Literature, Buddhism, Hinduism, Arthashastra (Economics & Politics), Law, and Medicine were among the subjects taught and each university specialized in a particular field of study. Takshila specialized in the study of medicine, while Ujjain laid emphasis on astronomy. Nalanda, being the biggest centre, handled all branches of knowledge, and housed up to 10,000 students at its peak. British records show that education was widespread in the 18th century, with a school for every temple, mosque or village in most regions of the country. The subjects taught included Reading, Writing, Arithmetic, Theology, Law, Astronomy, Metaphysics, Ethics, Medical Science and Religion. The schools were attended by students representative of all classes of society. The current system of education, with its western style and content, was introduced & funded by the British in the 20th century, following recommendations by Macaulay. Traditional structures were not recognized by the British govt and have been on the decline since. Gandhi is said to have described the traditional educational system as a beautiful tree that was destroyed during the British rule.
Recent world-wide educational trends
Overall, illiteracy has greatly decreased in recent years.
Illiteracy and the percentage of populations without any schooling have decreased in the past several decades. For example, the percentage of population without any schooling decreased from 36% in 1960 to 25% in 2000.
Among developing countries, illiteracy and percentages without schooling in 2000 stood at about half the 1970 figures. Among developed countries, illiteracy rates decreased from 6 percent to 1 percent, and percentages without schooling decreased from 5 to 2.
Illiteracy rates in less economically developed countries (LEDCs) surpassed those of more economically developed countries (MEDCs) by a factor of 10 in 1970, and by a factor of about 20 in 2000. Illiteracy decreased greatly in LDCs, and virtually disappeared in MDCs. Percentages without any schooling showed similar patterns.
Percentages of the population with no schooling varied greatly among LDCs in 2000, from less than 10 percent to over 65 percent. MDCs had much less variation, ranging from less than 2 percent to 17 percent.
Challenges in education
The goal of education is the transference of ideas and skills from one person to another, or from one person to a group. Current education issues include which teaching method(s) are most effective, how to determine what knowledge should be taught, which knowledge is most relevant, and how well the pupil will retain incoming knowledge. Educators such as George Counts and Paulo Freire identified education as an inherently political process with inherently political outcomes. The challenge of identifying whose ideas are transferred and what goals they serve has always stood in the face of formal and informal education.
In addition to the "Three R's", reading, writing, and arithmetic, Western primary and secondary schools attempt to teach the basic knowledge of history, geography, mathematics (usually including calculus and algebra), physics, chemistry and sometimes politics, in the hope that students will retain and use this knowledge as they age or that the skills acquired will be transferrable. The current education system measures competency with tests and assignments and then assigns each student a corresponding grade. The grades usually come in the form of either a letter grade or a percentage, which are intended to represent the amount of all material presented in class that the student understood.
Educational progressives or advocates of unschooling often believe that grades do not necessarily reveal the strengths and weaknesses of a student, and that there is an unfortunate lack of youth voice in the educative process. Some feel the current grading system risks lowering students' self-confidence, as students may receive poor marks due to factors outside their control. Such factors include poverty, child abuse, and prejudiced or incompetent teachers.
By contrast, many advocates of a more traditional or "back to basics" approach believe that the direction of reform needs to be quite the opposite. Students are not sufficiently inspired or challenged to achieve success because of the dumbing down of the curriculum and the replacement of the "canon" with inferior material. Their view of self-confidence is that it arises not from removing hurdles such as grading, but by making them fair and encouraging students to gain pride from knowing they can jump over these hurdles.
On the one hand, Albert Einstein, one of the most famous physicists of our time, credited with helping us understand the universe better, was not a model school student. He was uninterested in what was being taught, and he did not attend classes all the time. However, his gifts eventually shone through and added to the sum of human knowledge. On the other hand, for millenia those who have been challenged and well-educated in traditional schools have risen to great success and to a lifelong love of learning because their minds were made better and more powerful, as well as because of their mastery of a wide range of skills.
There are a number of highly controversial issues in education. Should some knowledge be forgotten? What should be taught, are we better off knowing how to build nuclear bombs, or is it best to let such knowledge be forgotten?
In developing countries
In developing countries, the number and seriousness of the problems faced is naturally greater. People are sometimes unaware of the importance of education, and there is economic pressure from those parents who prioritize their children's making money in the short term over any long-term benefits of education. Recent studies on child labor and poverty have suggested, however, that when poor families reach a certain economic threshold where families are able to provide for their basic needs, parents return their children to school. This has been found to be true, once the threshold has been breached, even if the potential economic value of the children's work has increased since their return to school. Teachers are often paid less than other similar professions.
A lack of good universities, and a low acceptance rate for good universities is evident in countries with a relatively high population density. In some countries there are uniform, overstructured, inflexible centralized programs from a central agency that regulates all aspects of education.
- Due to globalization, increased pressure on students in curricular activities
- Removal of a certain percentage of students for improvisation of academics (usually practised in schools, after 10th grade)
India however is starting to develop technologies that will skip land based phone and internet lines. Instead, they have launched a special education satellite that can reach more of the country at a greatly reduced cost. There is also an initiative started by AMD and other corporations to develop the $100 dollar computer which should be ready by 2006. This computer will be sold in units of 1 million, and will be assembled in the country where the computer will be used. This apperas to be a different computer to that developed by MIt, with the same price tag, believed to be powered by clockwork and a generator. This will enable poorer countries to give their children a digital education and to close the digital divide across the world.
In Africa, NEPAD has launched an "e-school programme" to provide all 600,000 primary and high schools with computer equipment, learning materials and internet access within 10 years.
Parental involvement
Parental involvement is an essential aspect of a child's educational development. Early and consistent parental involvement in the child's life is critical such as reading to children at an early age, teaching patterns, interpersonal communication skills, exposing them to diverse cultures and the community around them, educating them on a healthy lifestyle, etc. The socialization and academic education of a child are aided by the involvement of the student, parent(s), teachers, and others in the community and extended family.
Academic achievement and parental involvement are strongly linked in the research. Many schools are now beginning program of parental involvement in a more organized fashion, in part due to the No Child Left Behind legislation from the US Department of Education.
Prominent educationalists
- Sarvapalli Radhakrishnan
- Mortimer J. Adler
- F. Matthias Alexander
- Aristotle
- Catherine Baker
- Benjamin Bloom
- Garth Boomer
- Comenius
- Jim Cummins
- Obeng de Lawrence
- Caroline Middleton DeCamp
- John Dewey
- Hermann Ebbinghaus
- Charles-Michel de l'Épée
- Moshe Feldenkrais
- Paulo Freire
- Robert M. Gagne
- Howard Gardner
- John Taylor Gatto
- Paul Goodman
- Kurt Hahn
- Ivan Illich
- Hugo Kołłątaj
- Joseph Lancaster
- Horace Mann
- Maria Montessori
- A.S. Neill
- Seymour Papert
- Helen Parkhurst
- Frank Parsons
- Ivan Pavlov
- Johann Heinrich Pestalozzi
- Alec Peterson
- Jean Piaget
- Plato
- Erasmus
- Neil Postman
- Emilia Reggio
- Jean-Jacques Rousseau
- Theodore Sizer
- B.F. Skinner
- Socrates
- Rudolf Steiner
- Jesse Stuart
- Gustav Wyneken
- Lev Vygotsky
References
- Brief review of world socio-demographic trends shows world illiteracy trends.
- Siljander, Pauli (2002). Systemaattinen johdatus kasvatustieteeseen, otava. ISBN 951-1-18439-3.
- Dharampal (2000). The Beautiful Tree, Other India Press.
See also
- List of education topics
- Category:Education
- Category:Schools
- Category:High schools
- Holistic education
- Educational technology
External links
- WikEd is a MediaWiki set up specificially for educators and education research.
- WestEd - Education research, products, and services
- Education Issues Page
- Dictionary of the History of Ideas: Education
- Online Degrees Guide - Online Degrees Guide for Bachelors and Associate and Diplomas from US and Canandian Universities.
- Open Course Info — Freely-available course materials
- The Encyclopedia of Informal Education
- The Failures of American Education
- The Global Social Change Research Project has links to data about global education trends.
- Education Interfering with Learning
- European Agency for Development in Special Needs Education
- Higher education - Ancient India
- Education News
- The Theory Into Practice Database
- Parent Involvement in Schools
- New papers and articles on education and human Capital a free Newsletter edited by the RePEc academic Project]
- Education in Judaism
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