Well I was in college a few years ago and also did AQA psychology. (It probably is the same topics i'm assuming?)
-Unit 3 Topics for A2: Biological Rhythms (e.g. sleep), Perceptions, Relationships, Aggression, Eating behaviour, Gender, Intelligence, Cognition and Development
-Unit 4 topics for A2: Psychopathology (depression, schizophrenia, anxiety), Media Psychology, Addiction, Anomalistic Psychology, Research Methods.
(3 topics will be studied from each unit per term, usually under the choice of your teacher)