“…In addition, there is a considerable amount of research demonstrating that the gestalt grouping principles (connectedness, common region, color similarity, and spatial proximity) facilitate VWM performance (Gao, Gao, Tang, Shui, & Shen, 2016;Peterson & Berryhill, 2013;Quinlan & Cohen, 2012;Woodman, Vecera, & Luck, 2003;Xu, 2006). To some extent, improvements in performance can be attributed to the fact that a low-level perceptual grouping treats multiple individual items as a single unit in memory.…”