Just what do Americans think of big restaurant chains?
A recent index attempts to shed some light on how customers perceive some of the country's largest dining chains. During the first half of the year, YouGov BrandIndex polled 600,000 people to unearth the five casual dining and five fast food chains with the strongest buzz, by asking whether respondents had heard positive or negative things about the brands in the last two weeks.
"It's one aspect of what we tend to think of as brand health," said Ted Marzilli, CEO of YouGov BrandIndex, in a phone interview.
Having a national footprint helps boost a brand's perception since a larger presence often means more advertising dollars at work to sway opinion.
So which restaurants earned top scores? Click ahead to find out.
—By CNBC's Katie Little
Updated 21 September 2015
Posted 20 July 2015