I am trying to find out evidence concerning how to handle both timing and ease of modals/dialogs, popovers, popups, alerts and so on. Is there anyone who can share studies or links?


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    nngroup.com/articles/animation-usability This is the article that you are looking for :)
    – Kish
    Commented Feb 19, 2018 at 17:34
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    The right answer is "it depends" which means you might want to be more specific. Articles won't provide much guidance with such an overarching context. Do you have a particular use-case that applies to something you're currently working on?
    – invot
    Commented Mar 21, 2018 at 18:13
  • When you say evidence what do you mean? Seems your question is not clear enough. Commented Aug 18, 2018 at 22:58

2 Answers 2


There is not an exact study which defines this kind of stuff. It all depends on the needs of the design system in place. For example, compare Material Design's modals ( https://material.io/design/motion/understanding-motion.html# ) with the ones from Apple Design System ( https://developer.apple.com/design/human-interface-guidelines/ios/visual-design/animation/ ). You will see that there is not a certain rule they follow.

However, you can find general (extremely general) guidelines, like: https://designmodo.com/design-modal-windows/ , from where you can get some tips of how to make a modal easier for the user to digest.

I hope that this helps you get closer to the answer you are seeking.


You can find some useful information at Material Deign's Dialogs section.

  • Hi Garik! I had already had a look both at Materials Design standards and the mani frontend frameworks such as Bootstrap, UIKit and Foundation. I was wondering whether there was a source I could go through or not... Commented Dec 21, 2017 at 16:34

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