{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HPSLEC82010 - Lecture#8 Human Problem Solving AGENDA I...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Lecture #8. Human Problem Solving AGENDA I. Deductive Reasoning A. Revisiting Syllogisms B. Some Famous Error Types C. Evaluating Theories of Syllogistic Reasoning II. Conditional Reasoning A. Wason Card Task B. Modus Ponens and Modus Tollens III. Brain Teaser Solutions
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 I. Deductive Reasoning Deductive reasoning involves reasoning from a given set of premises to a given conclusion. It is not about empirically or inductively ascertaining the truth of the premises, its about whether or not the conclusions follow from the premises. ‘Normative systems’ of deductive reasoning are taught mostly in philosophy courses not science courses.
Image of page 2
3 A. Revisiting Syllogisms Human deductive reasoning processes depart in interesting ways from normative systems of deductive logic. First we will take up syllogistic reasoning to study human deductive thinking. We will find that humans are sometimes misled by the empirical validity of the conclusion of a syllogism, and sometimes they are misled by the form (syntax) as well.
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4 Review of Aristotle’s Syllogistic Logic Aristotle wanted a method to validly infer universals from reason. He invented syllogistic reasoning- the start of logic. Some men are Greeks A—B Major Premise Some Greeks are happy people B—C Minor Premise Some happy people are men C---A Conclusion Recall that validity concerned whether or not the conclusion ‘followed’ logically from the premises. Empirical truth was irrelevant.
Image of page 4
5 Review Specifics Mayer takes up the details on pp. 118-120, and this is an earlier slide. Each sentence can be in one of four ‘moods’ and the syntactic form (figure) can be one of four. So there are 4x4x4x4=256 wffs.
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern