watchdog
Most standardised tests never mention the source or give credit to the author of the content. Whether the test is CAT or paper based, there is no fine print on these tests that mentions the source or the author.
It would
obviously be stupid of GMAC and ETS to actually cite author, title, and publication in something that test takers could see ... that kind of info would be passed around every prep forum in a matter of minutes. ETS and GMAC aren't that stupid ... otherwise everybody would be scoring 800s on the GMAT
ETS and GMAC probably have contracts with third party authors that we test takers don't get to see ... that's what is meant by "fine print" (i.e., in passages that are taken from third party sources, the question will say something like "From an article published in 1997" which let's us know it is from a third party source but does not give away too much information that can be used to our advantage).
ETS and GMAC also have plenty of test writers that work for them whose mission is to come up with the questions that vex us so ... no copyright problems there either.