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:The results of the 12-month-olds in Experiment 1 are consistent with the results of Pascalis and colleagues (Pascalis et al., 2002; Pascalis et al., 2005) as they demonstrated that by 9-months of age, infants no longer discriminate unfamiliar monkey faces.
Category: