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:…internal consistency of the total scale and the subscales ranged from good to excellent (Streiner and Norman, 2008) and were on the same or better level comparedwith other studies (Jocovic et al., 2002; Marshman et al., 2005; Brown and Al-Khayal., 2006; Goursand et al., 2008; McGrath et al., 2008).
Category: