Do you want to know more about PET Writing Part 2?

Here is a little guide to help you think about your Cambridge English: Preliminary Writing Part 2 practice exercises.
It isn't "scientific", however it will help you keep certain things in mind when you answer Writing Part 2.

(Original source:
PET Direct. Teacher's Book. Page 66.
(c) 2010 Richmond Publishing. Distributed by Cambridge University Press.)