Re: Oh-oh
A good question will ask about an enduring quality. "I usually sleep well" might be one. Most of us will either say we do or we don't regardless of the time of day or amount of coffee we've had. (I'm not saying that question helps measure anything, it's just a more enduring quality.)
"I would rather read a book or go to a party." How can that be answered "either-or"? Depends upon the book, the party, and who says I can't do both? Read, party, read some more. A few people will answer definitely yes or no, but their answers will be diluted by the many who just flipped a mental coin.