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    hey guys please could I have a 2 mark definition for each of these terms? Also what is internal validity? thanks guys
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    (Original post by Jake.T1)
    hey guys please could I have a 2 mark definition for each of these terms? Also what is internal validity? thanks guys
    Validity refers to how well a test or study is measuring what it is supposed to. Example: a person wants to test the intelligence of participants and they do this by giving them a set of mathematical questions for them to do, with the idea that the people that answer the most maths questions are the smartest. This doesn't have validity as intelligence isn't just about maths efficiency.

    There are different types of validity and internal validity is one of them; this is the extent to which the results of an investigation are caused by the variable that is being measured, rather than other variables.

    Reliability refers to how consistent and dependable a test is. For something to have reliability, it should produce similar results when it is conducted in the same circumstances and with the same participants. If *a student does an exam paper on Monday and gets an A, but does the exact same paper on Friday and gets a E, then the results are not reliable.
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    thanks !
 
 
 
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Updated: September 6, 2015
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