biology

Leonid Krushinsky

Leonid Krushinsky is a biology 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 Leonid Krushinsky rather than just read about it. In short: Leonid Viktorovich Krushinsky (Russian: Леонид Викторович Крушинский; 16 June 1911 – 25 May 1984) was a Soviet and Russian biologist who specialized in the experimental study of animal behaviour at Moscow State University. The Krushinksy-Molodkina strain of rat susceptible to seizures caused by loud sounds was produced in his laboratory in the 1950s and is named after him and his student Ludmila Molodkina.

Key takeaways

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

Reference excerpt

Leonid Viktorovich Krushinsky (Russian: Леонид Викторович Крушинский; 16 June 1911 – 25 May 1984) was a Soviet and Russian biologist who specialized in the experimental study of animal behaviour at Moscow State University. The Krushinksy-Molodkina strain of rat susceptible to seizures caused by loud sounds was produced in his laboratory in the 1950s and is named after him and his student Ludmila Molodkina.

Biography Krushinsky was born in Moscow and went to the Moscow State University where he graduated in 1934. He then worked on animal behaviour under M. M. Zavadovsky and defended a thesis on defensive reactions in dogs in 1938 and received his doctorate on animal behaviour development in 1946. He became a professor in 1957. Leon Orbeli invited Krushinsky to work at the Pavlov Laboratory. Krushinsky conducted experiments on conditioning in rats and one of their observations was unexpected seizures induced by a loud bell. Just as genetics laboratories were being closed in the 1940s in response to Lysenkoism he demonstrated auditory seizures in a strain of Wistar rats and then maintained the line which showed genetic heritability of the character although he never made use of words like genetics or heredity in his publications on the topic. Studies on the KM strain helped the development of anticonvulsant drugs for the management of epileptic seizures. Krushinsky developed tests for animal reasoning and intelligence. During World War II he was assigned to dog breeding and training for training mine detection, guide, and rescue dogs. They also trained dogs to drop explosives in front of tanks and trains. They also studied the genetics of behaviour and conducted experiments on the behaviour of wolves and foxes. Krushinsky attempted to explain the connection between intelligence and neural organization in the brain. Krushinsky published several texts on animal behaviour and guided a number of students.

References

External links Biography History of neurobiology Russian documentary on animal intelligence which includes footage of Krushinsky's research on dogs (1973) Служебных Собак (1993 edition of Krushinsky's dog training manual) ФОРМИРОВАНИЕ ПОВЕДЕНИЯ ЖИВОТНЫХ В НОРМЕ И ПАТОЛОГИИ. ИЗДАТЕЛЬСТВО (1960) ЭВОЛЮЦИОННОГЕНЕТИЧЕСКИЕ АСПЕКТЫ ПОВЕДЕНИЯ (1991)

Worked examples

Example 1 — a first encounter with Leonid Krushinsky

Start with the simplest possible case. Write down what Leonid Krushinsky claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Leonid Krushinsky 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 Leonid Krushinsky 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 Leonid Krushinsky

In research: Leonid Krushinsky appears in biology 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 Leonid Krushinsky 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: Leonid Krushinsky is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1911 births, 1984 deaths, Academic staff of Moscow State University, so understanding it makes those chapters shorter.
In everyday life: Look for Leonid Krushinsky 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 Leonid Krushinsky in 20 minutes

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

Frequently asked questions

What is Leonid Krushinsky in simple terms?

Why does Leonid Krushinsky matter?

Because it connects several biology 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 Leonid Krushinsky?

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 Leonid Krushinsky.