Attention is, along with memory, the most studied cognitive function today. Eye tracking exploits the fact that our attention is closely correlated with the position of our eyes. Eye tracking is now a widely popular method for studies in psycholinguistics, human factors, decision making, neurological diagnosing and vision research, to name just a few areas. Current eye trackers are robust, non-invasive and permits gaze-tracking on adults, children and even some animals. Although eye tracking seldom answers where a particular function takes place in the brain, it is capable at answering how a particular individual goes about in processing the presented information. High temporal resolution and gaze accuracies at ~.5 visual degrees allow us to closely follow the processing from information retrieval to response.