CLEP- intro to psychology 1101-please give an honest advice

[Jowi]

I have never taken any clep test before but would like to take intro to psych 1101. I have the book, and I just purchased a subscription to instant cert. I have read first chapter of the textbook and must say that the flashcards don't cover material from the book. Even more , there are names and definitions on the flashcards that are not in the book at all. Should I believe that I be tested on things that are not in the textbook. For example IC has question about structuralism and Edward Titchener but my textbook does not mention nothing about him or structuralism...
Can somebody say what to think about this? I'll be very thankful.