A researcher wants to measure the reliability of a test. They ask participants to take parallel forms of a test (i.e. both Form A and B) and see if both test scores are correlated. What is a problem with using this method to establish reliability?Explain

A researcher wants to measure the reliability of a test. They ask participants to take parallel forms of a test (i.e. both Form A and B) and see if both test scores are correlated. What is a problem with using this method to establish reliability?
a. Practice effects could cause participants to do worse on the second test form
b. You cannot correlate Form A and Form B – you must only use the test-retest method to measure reliability
c. There is an increased chance that participants can cheat using parallel form
d. If questions on Form A and B are exactly the same (just in a different order), one test form may be
harder than the other test form
17. If an IQ test is a valid measurement tool for intelligence, and a child scores 110 on this test, which of the following is also true?
a. the child should be placed in advanced classrooms
b. the child will score 110 on the IQ test every time they take the test
c. the IQ test does not necessarily measure the child’s intelligence
d. the IQ test should accurately and consistently measure IQ

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