“…Notably, congruent with prominent theories of attention (e.g., Eriksen & St. James, 1986;LaBerge & Brown, 1989), the spatial extent of attention as measured by UFOV is 2D, extending only in the horizontal and vertical dimensions (Edwards et al, 2005;Sekuler & Ball, 1986). However, evidence from experimental studies suggests that the spatial extent of attention is three-dimensional (3D) during driving (Andersen, Ni, Bian, & Kang, 2011;Pierce, Bian, & Andersen, 2011). One limitation of those experiments is that the effect of 2D position was not statistically or experimentally controlled and only statistical controls of 2D size were provided.…”