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:Specifically, our findings confirm the study hypothesis that a high tendency to forgive is associated with a reduction in PTSD symptoms, as demonstrated in previous findings (Heinze and Snyder 2001; Kaminer et al. 2001; Witvliet et al. 2004; Friedberg et al. 2005; Snyder and Heinze 2005; Hamama-Raz et al. 2008; Weinberg et al. 2014).
Category: