To calibrate a serious IQ test, you need to test (1) many (2) randomly selected people in (3) controlled environment; and when the test is ready, you must test your subjects in the same environment.
If you have a test thus calibrated, you can use it to evaluate tests that can’t be calibrated in the same way.
If you have a test thus calibrated, you can use it to evaluate tests that can’t be calibrated in the same way.
Will this evaluation include giving both tests to many randomly selected people and comparing the results?