1 / 10

Reason

Reason. Deductive and Inductive Reasoning. Deductive reasoning. Reason from the General to the Particular All metal expand when heated X is metal Therefore X expands when heated . Deductive reasoning. Value of Deductive reasoning More certain, but less informative than induction.

vinson
Download Presentation

Reason

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reason Deductive and Inductive Reasoning

  2. Deductive reasoning • Reason from the General to the Particular • All metal expand when heated X is metal Therefore X expands when heated

  3. Deductive reasoning Value of Deductive reasoning More certain, but less informative than induction

  4. Deductive reasoning Deductive reasoning is seen as an instrument for the preservation of the truth. Unfortunately it is not really the source of the truth (not all arguments are true, even if they are valid)

  5. Inductive reasoning • Reasoning from particular to general • Metal X expands when heated Metal B expands when heated Metal C expands when heated Therefore all metals expand when heated

  6. Inductive reasoning Value of Inductive reasoning More informative, but less certain than deduction

  7. Inductive reasoning How reliable is inductive reasoning? We tend to make hasty generalisations we often jump conclusions without considering enough evidence.

  8. Inductive reasoning Inductive reasoning and Confirmation Bias People remember only evidence that will support their beliefs…

  9. Inductive reasoning What distinguishes good generalisations? • Number (the more the better) • Variety (variety of circumstances better) • Exceptions (look for counter examples, guard against confirmationbias) • Coherence (demand more evidence for surprising claims) • Subject area (be aware of subject area natural or social sciencesetc)

  10. Task • Read Sherlock Holmes pg 4 to 21 (up to start of chapter 8) What is the solution to the mystery? How did Sherlock Holmes figure it out? (read rest of pg.21 and 23) • Read story on pg.122, answer Questions 1-11 • Pg. 120 Question 2 (middle of page) • Journal : Do you use deductive or inductive reasoning?

More Related