Working on numerous eye tracking studies over the last two years, I feel I have gained the authority to say a word or two on eye tracking research. The research method is critical to our work at Design Science and has found itself to be ever more promising our clients and to us than ever before. Using eye tracking successfully in the field requires both a firm grasp on the theory and practical. Read more

During colonial times, medical practitioners still relied on ancient Greek methods. It was believed that the earth was made up of four basic elements: earth, air, water, and fire. There was also the corresponding belief that the human body was made up of four similar elements or “humors.” These were blood, black bile, yellow bile, and phlegm. Read more