Learning, Memory and Attention - HCI - EPFL

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Fonts <strong>and</strong> colors • THE SPEED FOR READING UPER-CASE LETTERS IS MORE THAN 10% SLOWER. • USE NO MORE THAN 4 DIFFERENT COLORS ON A SINGLE SCREEN, ESPECIALLY IF IT IS MOSTLY TEXT, AND NO MORE THAN SEVEN DIFFERENT COLORS THROUGHOUT A SINGLE APPLICATION. Prof. Dr. Pearl Pu 41
Background colors • Background of a display is not the area users should be paying attention. • Blue or black is best as a background color, especially for text, with white or yellow characters, respectively. • Blue should not be used for text since it is one of the hardest colors to read. • Staring at a constant bright background for long periods of time can cause eye strain. Online teaching notes are made in white background to prevent some students from accidentally printing them. Prof. Dr. Pearl Pu 42
Page 1 and 2: School of Computer and Communicatio
Page 3 and 4: Learning • Acquiring - New concep
Page 5 and 6: Minimize learning by metaphors •
Page 7 and 8: Design metaphors • Ensure emotion
Page 9 and 10: Metaphors continued • Caveat - Me
Page 11 and 12: Metaphors continued • Caveat - Me
Page 13 and 14: Small exercises • Design a set of
Page 15 and 16: Prof. Dr. Pearl Pu 13
Page 17 and 18: Consistency of screens (display ine
Page 19 and 20: Still on learning • Model of how
Page 21 and 22: Acquisition of cognitive skills •
Page 23 and 24: Experts: solve large chunks of prob
Page 25 and 26: Tdoff: power tools vs. loss of cont
Page 27 and 28: Example 2 : design tools for kitche
Page 29 and 30: Intermittent users • Intermittent
Page 31 and 32: Frequent users • Frequent and exp
Page 33 and 34: Memory: is what people forget with
Page 35 and 36: Recog. vs. recall • Ask users to
Page 37 and 38: Minimize user’s memory load • D
Page 39 and 40: Where we are • Model of how our m
Page 41 and 42: Techniques for getting attention
Page 43 and 44: GET users’ ATTENTION judiciously
Page 45: Use of fonts • Use no more than f
Page 49 and 50: Background colors • Consider colo
Page 51 and 52: Allocation of attention • On the
Page 53 and 54: Routinized tasks • A routine task
Page 55 and 56: ! Humans can do one problem-solving
Page 57: Consequence to interface design •

Learning, Memory and Attention - HCI - EPFL

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