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astronomy

Leo Doerfler

Leo Doerfler is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Leo Doerfler rather than just read about it. In short: Leo G. Doerfler (1919–2004) was the founder of the profession of audiology, the science of hearing and hearing disorders, in the early 1940s.

Key takeaways

  • Leo Doerfler belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Leo Doerfler to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Leo Doerfler from memory before moving on to harder problems.

Reference excerpt

Leo G. Doerfler (1919–2004) was the founder of the profession of audiology, the science of hearing and hearing disorders, in the early 1940s. He played a leading role in establishing professional bodies and educational standards for audiology practitioners.

Early life Born June 25, 1919, in New York City to Anna (Steiner) and Gustav Doerfler, he earned degrees in English literature from New York University and Columbia, but then accepted a scholarship at the Central Institute for the Deaf (CID) and earned his master's degree in deaf education. At CID, he also met Alice Turechek, a young teacher of the deaf, who was to be his wife for nearly 57 years until her death in 2000. In 1941, Doerfler took a job at the Iowa School for the Deaf, then enlisted in the army in 1942. In 1943, the day before he was to be sent to Germany, Doerfler was assigned to be an acoustic officer at Deshon General Hospital in Butler, Pennsylvania. There, he and three others treated soldiers with hearing loss. They were soon joined by Raymond Carhart, and the work they did during the war helped lay the foundation for audiology.

Establishing audiology Acting on Carhart's advice, Doerfler pursued a doctorate in audiology at Northwestern University, becoming only the second person ever to receive a PhD in this field, after which he established an audiology program at the University of Pittsburgh and served as its director for 28 years. He went on to co-develop the well-known Doerfler Stewart Test for pseudohypacusis (non-organic hearing loss). He joined the American Speech-Language-Hearing Association (ASHA) where he served on the executive council, was later elected vice-president and, in 1967, president. As the first chairman of the American Board of Examiners in Speech Pathology and Audiology, he guided ASHA's efforts to accredit audiology programs.

Academy of Dispensing Audiologists In 1976, at age 57, he left academia to start a private dispensing audiology practice in Greensburg, Pennsylvania, outside of Pittsburgh. In 1977, he and seven like-minded audiologists, met in Colorado Springs, Colorado, where they launched the Academy of Dispensing Audiologists. He was elected president and presided over the first ADA convention in 1978. He became an early leader in the movement to establish the "AuD" (Doctor of Audiology). Writing on ADA's web site, he recalled that tumultuous time: "My academic friends did not support the concept of the ADA and let me know at ASHA conventions and through the mail. Most are now dispensing, although none ever admitted being wrong."

Supreme Court ruling The 1978 Supreme Court ruling in National Society of Professional Engineers versus the United States forced ASHA to lift its ban on dispensing, and Doerfler resumed being active in ASHA. In the 1980s, he fought to have ASHA recognize audiology as a separate profession from speech pathology, and later urged ASHA to endorse the AuD. He lost those battles at the time, but lived to see the association reverse its position on both issues.

Later life Doerfler helped establish the Audiology Co-Op, one of the earliest buying groups, and served as its first president and later chairman of its board. In 1988, he was one of the 31 audiologists who joined James Jerger, PhD, in founding the American Academy of Audiology (AAA). In 1988, he and 24 other audiologists attended the ADA-sponsored Conference on Professional Education in Chicago, where the campaign for the professional doctorate truly began. Afterwards, he helped create a model curriculum for the AuD and served on the board of the Audiology Foundation of America. Doerfler died on July 7, 2004 in Oyster Bay Cove, New York.

Recognition Doerfler received many honors and awards, including AAA's first "Career Award in Hearing" in 1994, and ADA's 1991 Wernick Award in recognition of outstanding educational contributions. ADA created the Leo G. Doerfler Award to honor excellence in clinical practice.

References

External links A Short History of Audiology and Aural Rehabilitation by Leo Doerfler Academy of Doctors of Audiology: Leo Doerfler Kalin, George (December 2004). "Another Side of Leo Doerfler". The Hearing Journal. 57 (12): 57. doi:10.1097/01.HJ.0000324228.91482.7f.

Worked examples

Example 1 — a first encounter with Leo Doerfler

Start with the simplest possible case. Write down what Leo Doerfler claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Leo Doerfler before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Leo Doerfler ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Leo Doerfler

In research
Leo Doerfler appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Leo Doerfler in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Leo Doerfler is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1919 births, 2004 deaths, Audiologists, so understanding it makes those chapters shorter.
In everyday life
Look for Leo Doerfler outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Leo Doerfler in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Leo Doerfler means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Leo Doerfler out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Leo Doerfler in simple terms?

Leo G. Doerfler (1919–2004) was the founder of the profession of audiology, the science of hearing and hearing disorders, in the early 1940s.

Why does Leo Doerfler matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Leo Doerfler?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Leo Doerfler.

Tags

  • 1919 births
  • 2004 deaths
  • Audiologists
  • Columbia University alumni
  • New York University alumni
  • Northwestern University School of Communication alumni
  • United States Army personnel of World War II
  • University of Pittsburgh faculty

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