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Philip Johnson-Laird

Philip Johnson-Laird 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 Philip Johnson-Laird rather than just read about it. In short: Philip Nicholas Johnson-Laird (born 12 October 1936) is a philosopher of language and reasoning and a developer of the mental model theory of reasoning. He was a professor at Princeton University's Department of Psychology, as well as the author of several notable books on human cognition and the psychology of reasoning.

Key takeaways

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

Reference excerpt

Philip Nicholas Johnson-Laird (born 12 October 1936) is a philosopher of language and reasoning and a developer of the mental model theory of reasoning. He was a professor at Princeton University's Department of Psychology, as well as the author of several notable books on human cognition and the psychology of reasoning.

Biography He was educated at Culford School and University College London where he won the Rosa Morison Medal in 1964 and a James Sully Scholarship between 1964 and 1966. He achieved a BA there in 1964 and a PhD in 1967. He was elected to a Fellowship in 1994. His entry in Who's Who (2007 edition) records the following career history:

Ten years of miscellaneous jobs, as surveyor, musician, hospital porter (alternative to National Service), librarian, before going to university. Assistant Lecturer, then Lecturer, in Psychology, UCL, 1966–73 Visiting Member, Institute for Advanced Study in Princeton, New Jersey, 1971–72 Reader, 1973, Professor, 1978, in Experimental Psychology, University of Sussex Visiting Fellow, Stanford University, 1980 Assistant Director, MRC Applied Psychology Unit, University of Cambridge, 1983–89 Fellow, Darwin College, Cambridge, 1984–89 Visiting Professorships: Stanford University, 1985; Princeton Univ., 1986. He joined the department of psychology at Princeton University in 1989, where he became the Stuart Professor of Psychology in 1994. He retired in 2012. Johnson-Laird is a member of the American Philosophical Society, a Fellow of the Royal Society, a Fellow of the British Academy, a William James Fellow of the Association for Psychological Science, and a Fellow of the Cognitive Science Society. He has been awarded honorary doctorates from: Göteborg, 1983; Padua, 1997; Madrid, 2000; Dublin, 2000; Ghent, 2002; Palermo, 2005. He won the Spearman Medal in 1974, the British Psychological Society President's Award in 1985, and the International Prize from Fyssen Foundation in 2002. Along with several other scholars, Johnson-Laird delivered the 2001 Gifford Lectures in Natural Theology at the University of Glasgow, published as The Nature and Limits of Human Understanding (ed. Anthony Sanford, T & T Clark, 2003). He has been a member of the United States National Academy of Sciences since 2007.

Selected publications Johnson-Laird, P. N. (2010). "Mental models and human reasoning". Proceedings of the National Academy of Sciences. 107 (43): 18243–18250. doi:10.1073/pnas.1012933107. PMC 2972923. PMID 20956326. Johnson-Laird, Philip N (2006). How We Reason. Oxford University Press. ISBN 978-0-19-856976-3. Johnson-Laird, P. N. (2002). "Peirce, logic diagrams, and the elementary operations of reasoning". Thinking & Reasoning. 8: 69–95. doi:10.1080/13546780143000099. S2CID 5726135. Johnson-Laird, Philip N (1988). Computer and the Mind: An Introduction to Cognitive Science. Harvard University Press. ISBN 978-0-674-15616-6. Johnson-Laird, Philip N (1993). Human and Machine Thinking (Distinguished Lecture Series). LEA, Inc. ISBN 978-0-8058-0921-3. Johnson-Laird, Philip N (with Ruth M. J. Byrne) (1991). Deduction. Psychology Press. ISBN 978-0-86377-149-1. Johnson-Laird, Philip N (1983). Mental Models: Toward a Cognitive Science of Language, Inference and Consciousness. Harvard University Press. ISBN 978-0-674-56882-2. Johnson-Laird, Philip N (with Peter Cathcart Wason) (1977). Thinking: Readings in Cognitive Science. Cambridge University Press. Johnson-Laird, Philip N (with George Armitage Miller) (1976). Language and Perception. Belknap Press. ISBN 978-0-674-50948-1. Johnson-Laird, Philip N (with Peter Cathcart Wason) (1972). Psychology of Reasoning: Structure and Content. Harvard University Press. ISBN 978-0-674-72127-2.

References

Worked examples

Example 1 — a first encounter with Philip Johnson-Laird

Start with the simplest possible case. Write down what Philip Johnson-Laird 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 Philip Johnson-Laird 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 Philip Johnson-Laird 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 Philip Johnson-Laird

In research
Philip Johnson-Laird 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 Philip Johnson-Laird 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
Philip Johnson-Laird is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1936 births, 20th-century British psychologists, Academics of University College London, so understanding it makes those chapters shorter.
In everyday life
Look for Philip Johnson-Laird 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 Philip Johnson-Laird in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Philip Johnson-Laird 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 Philip Johnson-Laird out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Philip Johnson-Laird in simple terms?

Philip Nicholas Johnson-Laird (born 12 October 1936) is a philosopher of language and reasoning and a developer of the mental model theory of reasoning. He was a professor at Princeton University's Department of Psychology, as well as the author of several notable books on human cognition and the p…

Why does Philip Johnson-Laird 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 Philip Johnson-Laird?

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 Philip Johnson-Laird.

Tags

  • 1936 births
  • 20th-century British psychologists
  • Academics of University College London
  • Alumni of University College London
  • American cognitive psychologists
  • British consciousness researchers and theorists
  • British expatriate academics in the United States
  • British fellows of the Royal Society
  • Fellows of Darwin College, Cambridge
  • Fellows of the British Academy
  • Fellows of the Cognitive Science Society
  • Living people

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