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:In accordance with previous studies, we used a cut-off score of .85 to assign participants to the high versus low cardiac perception group (e.g. Montoya et al., 1993; Pollatos et al., 2005; Schandry et al., 1986).
Category: