“…People perceive information by the sensory system [ 27 ] and then they integrate and compare it with expectations and knowledge, which results in a behavioral response [ 28 ]. Therefore eye-tracking is considered a valuable tool to study the cognitive processes that accompany various human mental activities, ranging from less demanding ones such as reading [ 26 , 29 , 30 ], writing [ 31 , 32 , 33 ], and perception of images and objects [ 34 , 35 , 36 , 37 , 38 ], up to the more complex ones such as learning [ 39 , 40 , 41 , 42 , 43 , 44 , 45 ], and decision-making [ 10 , 28 , 46 , 47 , 48 ]. In the case of decision-making it was proved that the method significantly contributes to the accumulation of evidence about this process [ 28 ] and improves its understanding [ 49 ].…”