Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Our results demonstrate that synaesthetes, on the whole, do significantly outperform controls on this task, consistent with Ramachandran & Hubbard (2001a) and Hubbard et al. (2005). Superior performance was not linked to the number of trials in which synaesthetic colour was experienced, but was related to the proportion of graphemes that were noted to be coloured.
Category: