repressed memory, and recovered memory more so, is a difficult subject.
Far cleverer people than me have attempted to discover the 'truth' of this subject, and the arguments rage on.
My personal view is that we can probably repress memories into a position of denial.
I think that with enough effort we can maybe force ourselves into a state where we 'refuse' to acknowledge the very existance of what happened to us. The memories are still there, but we become adept at pushing them to one side and behaving as though they just don't exist.
But like I say, that's just my ideas on it, my memories remained with me all the time, I just waited 31 years to tell anyone because I was scared of the possible outcome of disclosure.
Since disclosing, and therapy, I don't believe that I have remembered anything extra. But there are memories that have become clearer.
Probably the most famous, and contravertial, expert on recovered memory is Elizabeth Loftus.
It's not easy reading, but it's worth some effort if you really want to get some understanding of memory. http://faculty.washington.edu/eloftus/