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Critical Thinking
Critical Thinking

A computer-assisted introduction to critical thinking, informal logic, and logic.

Perfect for online courses.

Critical Thinking includes:
- Critical Thinking [etext]
- Critical Thinking Software [practice and exam modes]
- Self-Defense: A Student Guide to Writing Position Papers [etext]


NEW VERSION 3.2
LOADED WITH GREAT NEW FEATURES AT SAME LOW PRICE:

-- Highlight and post notes in the etexts

-- Instant drag and drop installation for both PCs and Macs

-- Additional exercises in the CT Software, now totaling over 4000!

-- Email capabilities for practice and exam scores

-- Over a dozen in-class exercise worksheets for homework or discussion

-- Mock Position Paper exercises

-- Excel Progress Log to record due dates and exam scores


The Critical Thinking etext, CT Software, and the Self-Defense writing guide etext are all included on a single CD, in dual-platform format for Windows and Macs. Texts are also available in paperback.

Critical Thinking CD version
ISBN 0-9712355-1-1

Critical Thinking CD with texts also in paperback
ISBN 0-9712355-0-3

Self-Defense: A Student Guide to Writing Position Papers
[when purchased separately]
ISBN 0-9712355-2-X

FOR LATEST PRICES: Please click the FAQs About Critical Thinking link below. FREE SHIPPING!

TO ORDER OR TO REQUEST AN EXAM COPY: Please click the FAQs About Critical Thinking link below.

kpossin@winona.edu
507.452.0537

The Critical Thinking Lab
24847 County 17
Winona, MN 55987
USA

  • SPECIAL OFFER TO UNIVERSITIES WITH SPECIAL ECONOMIC NEEDS:

    We are making all our overstock of the Critical Thinking CD Version 3.0 available for course adoption FREE OF CHARGE. Quantities are limited and instructors must contact us directly, to coordinate the distribution of CDs to the students. We'd love to help, so please email us at kpossin@winona.edu.



  • What do reviewers say about CT?

    "Critical Thinking is the best intro to logic software around. I think the exercises are wonderful...so good, so deep,...and the course as a whole looks great." -- Patrick Grim, The Group for Logic & Formal Semantics, SUNY at Stony Brook


    "The materials are superb--you deserve five stars for both the texts and the CD." -- Jefferson White, University of Maine


    "Kevin Possin (Winona State University) has developed a program for students in critical thinking courses with an aim of giving them as much assisted practice as they need to master informal logic skills.... Having sampled the program, I say that this project should be...put into the hands of as many...undergraduate students as possible. Developing and maintaining critical thinking skills is essential to our national health. Dr. Possin has produced a means to that end." -- Jon Dorbolo (Ed.), APA Newsletter: Philosophy and Computers, Fall 2003, Vol. 03, #1



    What's covered in CT?

    - Argument identification
    - Anatomy of an argument
    - Cogency conditions
    - Use and abuse of definitions
    - Use and abuse of language
    - Informal fallacies
    - Categorical logic
    - Propositional logic
    - How to critically assess and write a position paper


    What's special about the CT Software?

    - Real life exercises
    - Easy to use
    - Over 4,000 exercises
    - Attractive interface
    - Immediate feedback for students
    - No grading for instructors
    - Reliability
    - For Windows and Mac
    - No need to be online
    - Email capabilities


    How can I use the CT Software?

    - Self-paced practice exercises
    - Homework assignments
    - Proof of competencies
    - Practice exams
    - Unit exams
    - Cumulative final exams
    - CT is completely scalable
    - Prep for the LSAT


    What teaching/learning style can I use with the CT Software?

    ANY:
    - Traditional classroom format
    - Computer-assisted homework
    - Computer-assisted exams
    - Completely computer-assisted courses
    - Work to competency
    - Independent study
    - Distance learning


    What's special about the CT etexts?

    - Conversational style
    - Lots of humor
    - Students enjoy its informality
    - Lots of examples
    - Hands-on directions
    - No need to be online
    - No extra reader to purchase
    - Able to highlight and insert notes
    - They're fun



    PLEASE VISIT THE REST OF OUR SITE BY CLICKING THE LINKS BELOW.



  • TEST YOUR CRITICAL THINKING SKILLS
    Take the DIAGNOSTIC QUIZ

    Answers are listed at the bottom of this page, after the POP QUIZ. Don't Peek!


    1. If capital punishment deterred murders, it would be justified. But since it does not deter such crimes, does it follow that it isn't justified? Yes _____ No _____


    2. Suppose it is true that if Clyde studies philosophy tonight, he will flunk his math test tomorrow, and if he studies math instead, he will flunk his philosophy exam. Suppose it is also true that he cannot study for both exams (not enough time). Does it follow that Clyde is going to flunk at least one of his exams tomorrow? Yes _____ No _____


    3. My spoon is dry, and my spoon would be wet if I had stirred my coffee. And I would not have stirred my coffee unless I had put sugar in it. So, I must not have sugared my coffee, right? Yes _____ No _____


    4. In order for an argument to be cogent, its premises must be true. Yes _____ No _____


    5. Police: Sorry, but only people with a special ZZ permit can park here. Driver: Well, since I have a ZZ permit, that means I can park here. Is the driver in the right? Yes _____ No _____


    6. If someone's argument begs the question, it still remains a valid argument. Yes _____ No _____


    7. Mary says she won't sleep with Clyde unless they are married. Clyde agrees to get married. But, on their honeymoon, Mary still refuses to sleep with Clyde. Did Mary break her promise? Yes _____ No _____


    8. Lincoln's famous quotation, "You can fool some of the people all of the time and all of the people some of the time, but you can't fool all of the people all of the time," is a cogent argument. Yes _____ No _____


    9. As we all know, spheres cast curved shadows, and the Earth casts a curved shadow on the moon during lunar eclipses. Does this prove that the Earth is spherical? Yes _____ No _____


    10. The president of IBM certainly has influence. Yet, he was unable to enroll his daughter at Whatsamatta University. Therefore, it is false, as some people have been suggesting, that only persons with influence can get their children enrolled at Whatsamatta U. Yes _____ No _____


    11. If the truth of statement A implies the falsity of statement B, then the falsity of A implies the truth of B. Yes _____ No _____


    12. Life is meaningless if there is no God. But life is not meaningless. This entails that there must be a God. Yes _____ No _____


    13. If it is true that on a clear day you can see across the Mississippi River (to the other side), does it follow that if one can see across the Mississippi River it is a clear day? Yes _____ No _____


    14. Suppose George knows that Susan stole the money. He wants to protect her, though. And so, when the police come to question him, the conversation goes as follows:
    Police: Do you know who stole the money?
    George: Well, I'm not absolutely sure it was Blackie, but I know it was either he or Susan.
    Did George lie to the police? Yes _____ No _____


    15. The difference between deductive arguments and inductive arguments is that deductive arguments go from general premises to specific conclusions, whereas inductive arguments go from specific premises to general conclusions. Yes _____No _____


    16. The famous argument "All men are mortal, and Socrates is a man; therefore, Socrates is mortal," is a syllogism. Yes _____ No _____


    17. Slippery Slope arguments are fallacious. Yes _____ No _____


    18. Criticism by Reductio ad absurdum is fallacious, but criticism by Ad hominem is not. Yes _____ No _____


    19. Using vague terms in one's premises to aid in the inference to one's conclusion is equivocation. Yes _____ No _____


    20. Vagueness is not the same as ambiguity. Yes _____ No _____



  • POP QUIZ TIME: AT the end of July, the voiceover in a political ad for John McCain described Barack Obama as "The biggest celebrity in the world," while showing pictures of Briteny Spears and Paris Hilton. [Check it out on YouTube.] What informal fallacy did this ad commit?

    CHECK BACK LATER for the ANSWER and a new POP QUIZ.


    PREVIOUS QUIZ: When the police officer told the driver, in #5 above, "Sorry, but only people with a special ZZ permit can park here," the driver thought "Well, since I have a ZZ permit, that means I can park here." But, as it turns out, the driver is incorrect in thinking that this follows. Congratulations if you got this one right! Now, can you explain WHY the driver's inference was faulty? Hint: it hinges on one little word.

    ANSWER: The important little word here is 'only.' When the parking policy is that only those with a ZZ permit can park in the lot, that means that having a ZZ permit is necessary in order to park there, but it doesn't state that having a ZZ permit is a sufficient condition to park there. So, while the driver may have met one condition for parking in the lot, there may be other conditions that are yet unmet that are barring them from parking. The word 'only' is quite technical. When the IRS says "only those who have done such-and-such are eligible for a deduction," that doesn't mean that doing such-and-such automatically gets you that deduction. Knowing how the word 'only' behaves is very important!


    Answers to the DIAGNOSTIC QUIZ:

    1. No
    2. No
    3. No
    4. No
    5. No
    6. Yes
    7. No
    8. No
    9. No
    10. No
    11. No
    12. Yes
    13. No
    14. No
    15. No
    16. Yes
    17. Yes
    18. No
    19. No
    20. Yes

    How well did you do?

    20-19 WOW! You are good!
    18-17 Your intuitions are great, but do you know why your answers are right?
    16-15 You could still use some practice, and CT could help.
    14-10 CT could help a lot.
    9-? CT could help a way lot!



  • PLEASE VISIT THE REST OF OUR SITE BY CLICKING THE LINKS BELOW.

kpossin@winona.edu

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