homework: https://docs.google.com/document/d/1rjxSkzFeC2AGYez-xoKzNfK3H8M6UcZjieUeap9WRSg/edit?usp=sharing

soo much bs for this assignment haha. here are my lecture notes for human abilities lecture

https://classroom.udacity.com/courses/ud400/lessons/9232968306/concepts/92293480610923

  • What Humans Can Do
    • Input: how stimuli are sent from the world, perceived inside the mind
    • Processing: how it stores and processes the input it has received
    • Output: how it controls indivudal’s actions
  • Information Processing (processor view of human)
    • Visual: color, movement in center. motion: periphery. consider color blindness, adjustable font size.
    • Auditory: pitch, loudness, localizing sound. useful for alerts, problematic for oversharing info
    • Haptic: more personal feedback - feels keys go down
  • Cognition (memory)
    • Perceptual store (working memory)
      • Visuospatial sketchpad
      • Phonological loop
      • episodic buffer (integrating info from other system, chron ordering. expertise increases this buffer eg chess example)
      • Central executive
    • Short term memory
      • Chunking: about 4-5 chunks of info (no longer 7 +/- 2)
      • Recognition: recognize is better than recall
      • Only ask user to hold 4-5 chunks. Use recognition over recall
    • Long term memory
      • seemingly unlimited
      • but hard to load. have to put into short term memory a few times
    • Learning
      • Procedural: how to do something <- what we do in hci, unconsciously competent
      • Declarative: Knowledge about something <- how we communicate about what we are doing
    • Cognitive load
      • things that compete for cognitive resources include stress and focusing on many things art once
      • to reduce load:
        • use multiple modalities: eg visual + verbal
        • let modalities complement each other: support instead of compete
        • give user control of the pace
        • emphasize central content - minimize clutter
        • offload tasks - look closely at what the user has to do or remember - ask tif they can offload tasks
    • Motor system
      • spotify control widget lock screen vs swipe screen. x button too close to the skip button. full context is impt. how precise they have to be, reduce the penalty for errors