WHAT IS THE DELBOEUF ILLUSION?
The Delboeuf illusion is one type of visual illusion where a dot surrounded by a large ring is typically perceived to be smaller than the same-sized dot surrounded by a small ring.
This optical trick works because your brain perceives the dot in the context of the outer ring.
It was named after the Belgian philosopher and mathematician Joseph Remi Leopold Delboeuf (1831 – 1896), who created it in 1865.
The Delboeuf illusion is one type of visual illusion where a dot surrounded by a large ring is typically perceived to be smaller than the same-sized dot surrounded by a small ring
In terms of plate size, the theory goes that having a smaller plate tricks people into thinking they have more food.
However, new research suggests that when people are hungry, they are able to identify food portion accurately, no matter how it is served.
According to the researchers, this indicates that hunger stimulates stronger analytic processing that is not as easily fooled by the illusion.
However, the Delboeuf illusion is widely believed to work in other contexts.
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