Trivia

Hard

Which Of These Optical Illusions Can Be Enlisted To Aid In Weight Loss?

The Delboeuf Illusion
The Bezold Effect
The Hering Illusion
The Orbison Illusion
An illustration depicting the Delboeuf Illusion.
Washiucho/Wikimedia

Answer: The Delboeuf Illusion

The Delboeuf Illusion, named after the Belgian mathematician Joseph Delboeuf who created it in 1865, is a simple illusion wherein there are two identically sized filled-in circles placed side-by-side, but one of the circles is surrounded by another circle (ring). Despite the identical size of the two filled-in circles, people consistently rank the circle-within-the-circle as being smaller because the presence of the outer circle (ring) creates a perceptual error.

So how can an optical illusion that creates a perceptual error in size help anyone lose weight? It turns out that the same mechanism that leads us to believe the circles are not equal in size can also apply to serving sizes on plates. In a series of experiments, researchers from Georgia Tech and Cornell University demonstrated that study participants consistently took up to 13 percent more food than they intended when using larger plates. The smaller the plate, the more likely the participants were to not only portion out less food than the people with the larger plates, but to undershoot their portion goals by 12 percent.

The take-away? Serve your meals on smaller plates. The smaller the plate, the bigger the food looks and the less likely you are to over serve (and over eat).

Trivia

Hard

Dmitri Mendeleev Was A Russian Scientist Best Known For?

Trivia

Hard

Work On Which Of These Sci-Fi Movies Actually Led To Real World Scientific Papers?

Trivia

Hard

The Microsoft Xbox Was Originally Slated To Be Called What?

Trivia

Very Hard

The First Cartoon Aired With Stereo Sound Was?

Trivia

Hard

What Modern Use Have World War II-Era Swiss Bunkers Been Converted For?

Trivia

Easy

The Largest Consumer Of Fireworks In The United States Is?

Trivia

Easy

Which Of These Mega Movie Franchises Started Off As An Amusement Park Ride?

Trivia

Easy

Artificial Grape Flavor Is Modeled After Which Grape Variety?

Trivia

Very Hard

What Iconic Award Was Almost Named The “Ike” Award?

Trivia

Hard

Which Musician Revitalized His Career By Composing The Windows 95 Start Up Sound?