AQA’s examiner reports are available for the January 2013 papers (together with the papers themselves) at:

http://www.aqa.org.uk/subjects/psychology/a-level/psychology-a-2180/past-papers-and-mark-schemes

The reports offer the usual excellent exam skills advice for students, and there is an especially useful section at the start of the Unit 2 report about command terms, answering the question asked and where and where not to write on the exam paper.

Another useful comment (this time from PSYA1, Q4):

 ‘It was evident that students usually scored better marks where they outlined one or two research studies accurately and in reasonable detail, rather than when they outlined several studies less accurately’.