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:In line with past studies (e.g., Anderson et al., 1998; Craik et al., 1996) results of the current study showed that secondary task performance i.e., the RT task, was disrupted to a greater extent when attention is divided during retrieval than when attention is divided during encoding.
Category: