I don’t know whether or not I should purchase Barrons AP Psych book 4th edtion from Feb. 2010 (that contains a CD ROM with two extra practice tests) or the 5th edition from Feb. 2012. Has there been major changes to the test since 2010? I believe that until 2010, AP tests took off points for incorrect answers on the exam, just like the SAT. Is this the only change? because then I will buy the older version. Both books are 400 pages…</p>
Any input is appreciated!</p>