OCR pyschology - core studiesWatch
You should also check out the forum to see if there's any other threads there which might be helpful to you!
For section B: Maguire has hardly appeared in section B (only once in 2012) so it may come up. I'm not entirely sure what else would come up, but try to find links between Maguire and other studies that would be suitable for this section.
Section C: I think developmental will come up (I actually thought it would come up last year) as well as psychodynamic as it has appeared the least.
Don't take these as solid predictions as OCR doesn't always choose studies/approaches that haven't appeared in ages (they put cognitive in last year despite it only being used in January 2013) but I hope this helps anyway.