How can I include IDAs in my essay questions?

IDAs are issues, debates and approaches in psychology. 

A good way to include them is to begin a paragraph by discussing the IDA that links appropriately to your question/subject. Then you can bring in a study. This will help show your understanding of that issue/debate/approach and will link nicely!

You can also do it the other way round - start with your study (AO2) and then show how that links to the IDA.