Should we replace traditional grading methods with lie detector tests?

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Discussion Overview

The discussion centers around the proposal of using lie detector tests as an alternative to traditional grading methods in educational settings. Participants explore the implications, accuracy, and potential effectiveness of such an approach, raising questions about its feasibility and ethical considerations.

Discussion Character

  • Debate/contested, Conceptual clarification, Exploratory

Main Points Raised

  • One participant sarcastically suggests that lie detector tests could replace human grading due to their perceived accuracy and ability to determine truthfulness.
  • Another participant questions the origin of the suggestion, implying skepticism about its seriousness.
  • A participant expresses confidence in their ability to deceive a lie detector test.
  • Some participants challenge the accuracy of lie detectors, stating they typically range between 88% and 92%, rather than the claimed 99%.
  • Concerns are raised about the potential biases of lie detector tests, particularly against individuals with physiological differences.
  • One participant argues that even with high accuracy, lie detectors would only measure confidence in answers, not the correctness of those answers.
  • Another sarcastic remark suggests that lie detectors could determine the validity of philosophies, questioning the seriousness of the proposal.

Areas of Agreement / Disagreement

Participants express disagreement regarding the accuracy and applicability of lie detector tests in educational contexts. There is no consensus on whether such tests should be used for grading.

Contextual Notes

Participants note limitations in the accuracy of lie detectors and the potential for bias, but do not resolve these issues or provide definitive evidence.

kmarinas86
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<sarcasm>Since lie detector tests are very very accurate (like 99%), we should use them as an alternative for human grading. So what do you think? I believe it would obviously work due to the use of the lie detector test in law enforcement. It can save the teacher a lot of time because since the lie detector test knows what is a lie and what is a truth, rather than what is a matter of opinion, feeling, or subjective subconscious inference, it can be used to assess the correctness or wrongness of essays, mutiple choice answers etc. All we have to do is to connect the student to a lie detector while they are giving responses to questions!</sarcasm>
 
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Uh...ok?
Did one of your teachers suggest this or something?
 
I think I could beat the test.
 
They aren't 99% accurate.

They probably usually range between 88% and 92% accurate.

Note: I searched for some reference, but couldn't find a good one. My searches get flooded with anti-polygraph sites and other non-sense.

Should we use for educational purposes? If your goal is to reduce your freedoms, then yeah, but for me, hell no.
 
Last edited:
JasonRox said:
They aren't 99% accurate.

They probably usually range between 88% and 92% accurate.

Note: I searched for some reference, but couldn't find a good one. My searches get flooded with anti-polygraph sites and other non-sense.

Should we use for educational purposes? If your goal is to reduce your freedoms, then yeah, but for me, hell no.

Of course. But I am 100% sure that the those percentage of accuracy cannot be replicated for all individuals. I am 100% sure that it has some level bias particulary against those with physiological problems or differences. Otherwise we could use them for education gdamit. So why don't we? We could save billions in education (if it actually does what it claims!)

Just divide by .88 or .92 to get the real grade!
 
Last edited:
Even if it's accuracy were 99%, a lie detector would only show whether the amount of confidence the person had in his answer, not whether the answer were actually correct.
 
BobG said:
Even if it's accuracy were 99%, a lie detector would only show whether the amount of confidence the person had in his answer, not whether the answer were actually correct.

<sarcasm>No. I believe that a lie detector test can detect lies. It can determine which philosophies are invalid.</sarcasm>
 

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