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:…2005), with research documenting the unique role of dehumanization in shaping intergroup hostility (e.g., Andrighetto et al., 2014; Haslam, 2006; Kteily et al., 2015), we theorized that meta-dehumanization would uniquely predict aggressive outgroup attitudes and behavior via reciprocated…
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