I'm familiar with Sklansky's Gap Concept and IMHO our read on the raiser plays a bigger part than is mentioned in books, etc. Also, the amount of the raise, the amount already in the pot, and our overall poker ability are more factors to consider.
I wouldn't automatically call a raise with 88 on the button. The raise would have to be reasonable, the pot would have to give me odds
, and I would have to be confident in my post-flop play if I don't hit trips.