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valid

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Your score was: 100 %

Question Results

Score 3 of 3

Question:

Multiple choice question

Validity comes from the word valid and can have different meanings.

Validity can mean based on logic and supported by facts.

For example:

If a reason has validity we can accept it because it is based on truth and logic.

This document from World War Two gives validity to your claim that the house belonged to your grandfather.


	justifiable
	unacceptable
	based on logic and truth
	supported by facts

Which 3 words below are closest to this meaning of validity? Choose the 3 correct answers.

Response:

	supported by facts
	unacceptable
	based on logic and truth
	justifiable

Score 3 of 3

Question:

Multiple choice question


	a claim that is legitimate
	an idea, concept or theory that you can defend because it was built on strong evidence
	a statement or argument that is logical and convincing
	a case that is based on one person's opinions rather than on facts

Which answers below best explain the meaning of valid? Choose the 3 correct answers.

Response:

	an idea, concept or theory that you can defend because it was built on strong evidence
	a statement or argument that is logical and convincing
	a case that is based on one person's opinions rather than on facts
	a claim that is legitimate

Score 2 of 2

Question:

Multiple choice question

In a research context, a valid test means a test that measures only what it is intended to measure. This means that results of the test are not affected by any additional factors.

For example: A test that is designed to assess students' mathematical abilities should test only mathematical knowledge and skills. If the test also examines the students' ability to read math problems, then this test will not be a valid and accurate measure of students' mathematical ability.

Read this paragraph and answer the question below.


	There is no single pattern which clearly shows the difference between people who tell the truth and people who are not honest.
	The polygraph doesn't really measure people's 4 physiological reactions.
	Evidence shows a difference between honest people and people who tell lies.

Are Polygraphs Valid Tests?

Many people question the validity of polygraphs or 'lie detector tests'. These tests are used to check if someone is lying or telling the truth. Polygraphs measure 4 physiological reactions of a person when he or she answers questions: heart rate, blood pressure, breathing, and skin reactions. The problem is that there is no evidence that any one pattern of physiological reactions proves that a person is lying or telling the truth. An honest person may be nervous when answering truthfully and a dishonest person may not be anxious at all.

That is why courts do not consider results of polygraphs as valid evidence.

Why do people question the validity of polygraph tests? Choose ONE correct answer.

Response:

	The polygraph doesn't really measure people's 4 physiological reactions.
	Evidence shows a difference between honest people and people who tell lies.
	There is no single pattern which clearly shows the difference between people who tell the truth and people who are not honest.