An End to the Controversy? A Reply to Rips

@article{JohnsonLaird1997AnET,
  title={An End to the Controversy? A Reply to Rips},
  author={Philip N. Johnson-Laird},
  journal={Minds and Machines},
  year={1997},
  volume={7},
  pages={425-432}
}
Lance J. Rips’s The Psychology of Proof (Rips 1994) defended formal proofs, which his PSYCOP theory derives from rules of inference like those of a logical calculus. In my review (Johnson-Laird 1997), I congratulated him on having formulated the best available formal theory, but I defended mental models. They are the end product of perception and of understanding discourse, and they can be used for reasoning by testing whether any models of the premises are counterexamples to conclusions. Rips… CONTINUE READING

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