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Deductive reasoning - Intro to Psychology

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    So let's look at an example of deductive reasoning. So Premise A, is all mass
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    creates gravity. And Premise B, is all objects have mass. Therefore, all
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    objects create gravity. Because if all mass has gravity and all objects have
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    mass, then they must create gravity. Notice that the logical conclusion has to
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    be true if the 2 premises are true. We know, however, that this type of
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    reasoning can lead to correct conclusions only when the general premises to
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    which they are based are true. Let's look at another example. Premise A,is I
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    don't know math. Premise B is, I can't learn math. Therefore, I shouldn't even
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    bother trying to learn math". We see, here, that this reasoning leads to a
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    false conclusion, because premise A is false. And so is premise B. So, even
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    though the argument is. Easily structured in the same way. One leads to an
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    accurate conclusion, and one, this one, does not. Deductive reasoning is what
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    scientists use when we make predictions for our general goals. Now let's go to
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    Susan and talk about inductive reasoning.
タイトル:
Deductive reasoning - Intro to Psychology
Video Language:
English
Team:
Udacity
プロジェクト:
PS001: Intro to Psychology
Duration:
01:09

English subtitles

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