“…Eye-fixations provide a unobtrusive method for tracking on-line cognition, and is well accepted as a valid indicator of information processing and attention (Rayner, 1998;Tannenhaus, Magnuson, Dahan, & Chambers, 2000;Tannenhaus, Spivey-Knowlton, Eberhard, & Sedivy, 1996). Eye movements track linguistic processing while reading (Rayner, 1998), reveal interference between languages among bilinguals (Spivey & Marian, 1999), follow the logical causal sequence in problem-solving tasks and correlate with solution accuracy (Hegarty, 1992;Rozenblit, Spivey, & Wojslawowicz, 2002), and tightly track objects in the environment discussed during the course of conversation (Cooper, 1974;Tannenhaus, Spivey-Knowlton, Eberhard, & Sedivy, 1995). In addition, guiding visual attention to relevant information during a problem solving task substantially influences reasoning and performance (Grant & Spivey, 2003).…”