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izumitelj 's Public Library

  • “above the fold”—a term borrowed from print-newspaper terminology and used as a way to reference what is visible on the webpage without scrolling
  • A responsive design may have 2, 3, 4, or more different folds, specific to the devices and screen sizes that the design was optimized for. Each target device has its own fold to consider.
  • But more than a measurement, the fold is a concept. The fold matters because what appears at the top of your page matters. Users do scroll, but only if what’s above the fold is promising enough. What is visible on the page without requiring any action is what encourages us to scroll. This is true on any size screen, be it mobile, tablet, or desktop: anything that’s hidden and that the user must uncover will only be seen if the user deems it worth the hassle.

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  • in the human–device information system, the capacity of the communication channel is determined by the screen size. (As we will see later, the attention span and other individual variables may also influence the channel capacity.) The bigger the screen size, the larger the capacity of the communication channel between the human and the device. Once people have to take action and navigate to a different view (either by scrolling down the page or by switching pages altogether), users will incur (1) an interaction cost; and possibly (2) an extra memory load (either because they must remember what was on this page or because they must remember where else they may go to find the information that they need).
  • Because responsive design linearizes the content (by reducing the dimensionality of the content grid, from n columns by m rows to n×m rows by 1 column, in the extreme case of designing for a smartphone), it requires users to go through the content sequentially before they reach any particular piece of information. Therefore, techniques that facilitate direct access are very important with responsive design: making sure that the navigation is easily accessible and contains pointers to all chunks of information that may be potentially relevant to a user.
    • Simplicity means taking into account the capacity of the communication channel. A simple app or website is tailored to the channel capacity and does not make users work more than necessary to attain their goal. It takes into account:

      • the user limitations (working-memory size and attention while using the device), and
      • the device limitations (the screen size)
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