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:…literature, we can further confirm that PEOU is positively related to PU (Lee and Park, 2008), PU is positively related to attitude and intention (Kim and Garrison, 2009), and that attitude is positively related
ba f 2b R2c Q2d q2e
H1: PIIT-PEOU 0.750** n/af 0.563 0.318 n/a H2: PIIT-PU 0.162 nsg…
Category: