Perception: what are the immediate objects of perception?
The syllabus is below. Click through the links for revision resources. Howard Simmons' excellent brief guide to this area of the syllabus is here. The Routledge resources written by Michael Lacewing are here.
Attack on the representative nature: of indirect realism: it leads to scepticism about what the external world is like.
Response to this: sense data tell us of ‘relations’ between objects (Russell).
Another response to this: the distinction between primary and secondary qualities (Locke) allows material objects to have both mind-dependent and mind-independent qualities.