These are questions which make no attempt to assess critical thinking or evaluate knowledge in a certain area, they attempt solely to trick the student. After enough of these trick questions, the student becomes ingrained in finding the catch. Answering the questions becomes a game and not a test of ones knowledge. For instance (not an actual question, just an example):
A patient complaining of cephalgia would most likely:
- Have a headache
- Have an ear ache
- Have clubbed fingers
- Be a dick
If the question asked, "which of the following symptoms would be cause for concern in a patient with an acute onset of hypertension," and "Headache (cephalgia)" was the answer, the question would not only test clinical knowledge, but teach the student a (useless) medical term for a headache. If the answer was given only as cephalgia, then the question would test for nothing.
Update: I passed my paramedic final and will take the North Carolina EMT-Paramedic exam October 23rd. I hope to complete the National Registry testing in November.