Felfernig (2007) set up a research study to find out. Even though there were 10 attributes that the tents were compared on, participants focused only on two or three attributes. The researchers varied the order in which the tents appeared on the page: first, second, third, or fourth. It turns out that the most important attribute was not whether the tent was waterproof or if it had plenty of air ventilation. The most important attribute was the order in which the tents appeared on the page! Participants disregarded attributes and simply picked whichever tent was the first one to show. People picked the first tent 2.5 times more than any other. They chose the first tent 200 times; they chose the other three tents (combined) only 60 times. This is an example of the order effect.

https://www.blog.theteamw.com/2010/10/19/100-things-you-should-know-about-people-45-you-choose-and-vote-for-the-first-one-on-the-list/