i havent taken the DATs yet, but my Kaplan teacher made it very clear that the NS workshop of kaplan is exclusively for your own practice only. seriously, when i did that workshop, i notice lots of dimensional analysis that would be very time consuming during the real test. anyway, the advice i recieved was study it, learn how to those problems, but don't freak out (i did...it took me an hour to finish the gchem portion alone..). it is meant as a study aid, not as a representation of the actual exam. the most reflective on the actual exam would most likely be the full lenght simulations on kaplan and topscore. gl.