1.What are preattentive features? Very subtle properties (like different shades of grey), that are noticed subconsciously but we aren't consciously aware of them Simple properties, like size, color, and line angle, that make one object stand out among others Complex properties, like having 3D-depth, shading, detailed designs 2.Which is a better strategy to reduce working memory demands (and prevent cognitive overload) for EHR users? Have as much information as possible on the screen at once, so it's all available when needed Have less information visible on the screen at one time, but allow the user to expand sections to show additional information as it's needed 4.If the user's attention is focused on one part of the screen, where should pop-up alarm messages appear? It doesn't matter, because any pop-up message will grab the user's attention, no matter where it is As far away from the focal point as possible, so that attention can be pulled away from the focal point and on to the pop-up alarm. As close to the focal point as possible, because it might not get noticed if it's in the periphery 5.The affordances of an object (in real life or on a computer screen) refers to: The actions that can be performed with the object How much the object costs, or how much it can be sold for What kinds of sounds the object makes How features and shapes are grouped together in the object 7.One of the design principles discussed had to do with the use of color. What is the general recommendation to make information easy to find on a screen? Color is never useful; just using shades of gray is much more effective Color can be effective to highlight differences, but only use two or three colors; any more than that becomes too distracting Use a lot of different colors, because they can each be used to highlight different items