The endowment effect shows that if you have a sense of ownership over an item, you immediately attribute greater value to the item. In a digital experience, is scrolling or hovering over an item enough to create a sense of ownership, or must the user explicitly interact with a page (via clicks/taps/gestures)?
Google isn't being very helpful in finding me evidence to support or reject this statement, so I'm turning to the good citizens of UX StackExchange... what do y'all think? Do you know of academic studies that have been performed in this area?
edit: @Marielle very handily identified the phenomenon in question and linked to a pair of articles that state that physically touching the item on a screen trumps clicking on it: