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:For example, it is found that individuals with ASD tend to under report the severity of their autistic features (Johnson, Filliter, & Murphy, 2009) and show diminished awareness of their mental states (Williams & Happé, 2009, 2010).
Category: