“…It is also widely accepted that proficient users of English, regardless of their L1 background, might be used as raters provided that they meet the necessary criteria (Taylor, 2005) and there are number of studies which have explored the impact of language background on rater behavior (Chalhoub-Deville & Wigglesworth, 1995;Hamp-Lyons & Davies, 2005;Hill, 1996;Lazaraton, 2005). Tests using paired or group oral tasks have long been practiced and discussed in the field (e.g., Bonk, 2003;Egyud & Glover, 2001;Foot, 1999;Fulcher, 1996;Iwashita, 1996;O'Sullivan, 2002;Saville & Hargreaves, 1999), although the practice of assigning scores for groups rather than individual performance is usually limited to classroom contexts.…”