Well, this is embarassing. It must not have sent properly when I was on here last time.
Anyway. In the end, once I'd run the stats fully it turned out that name type didn't make any difference after all. However, cats which were played with more were more likely to exhibit stronger signs of attachment. In addition, having a cat for longer produced the same effect (not too surprising for all us cat fans who know our bonds grow stronger with time
) as does adopting the cat at an earlier age.
However, having multiple cats may negatively influence attachment - although this could also be cats have to compete for opportunities to exhibit.
In a blow for certain peoples views that cats are very much a "pet for her", there was no difference in attachment based on human gender.
Thank you so much again to everyone who responded (-: and to this community as a whole for letting me post here. I'm attempting to get it published, if I'm successful I'll post a link to the abstract.