The Delbouef Illusion

ASSIGNMENT 1- The Delbouef Illusion
Applications of the Delbouef Illusion
Which circle below looks bigger?

Having already learned about the Ebbinghaus illusion this week, you were probably right in guessing that the circle with the ring around it appears larger than the non-surrounded circle. This is an example of the Delboeuf illusion, first identified by Belgian philosopher and mathematician Joseph Delbouef in 1887 or 1888. Modern psychologists have tested this illusion in various experiments, including one to determine if eyeshadow makes eyes look bigger (it does), and others to determine if the quantity of food on a plate looks larger if the plate is smaller. Watch the following Brain Games clip to learn more: Delboeuf Illusion and How Plate Size Influences Eating (0:52).

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There have been several studies examining possible applications of this effect. Studies by Koert Van Ittersum and Brian Wansink at the Cornell Food and Brand Lab have studied the effect of the Delbouef illusion on eating and serving behavior. In several different experiments, they measured if people would take more or less than a typical serving size depending on the size of their plate, the color of the plate, the color of the tablecloth, and how much they knew about the Delboeuf illusion.

Assignment:
Your mom is in charge of providing meals at the upcoming family reunion and she is worried about not having enough linguini alfredo (a white pasta) to serve the entire crew. She wants to ensure that no one takes too much food.

STEP 1: Read through one of the following articles:

“Plate size and color suggestibility: The Delbouef Illusion’s bias on eating and serving behavior” by Koert Van Ittersum and Brian Wansink (2012).

“Visual illusions and plate design: The effects of plate rim widths and rim coloring on perceived food portion size” by McClain et al (2013).
STEP 2: Give your mom some advice on what size plates she should use, what color they should be, and what color tablecloths she should buy. Read through the study, then explain how your mom can utilize the Delboeuf illusion to minimize her costs at the reunion. Cite specific evidences (at least four specific examples) from the research.

The resulting paper should be 2-3 pages (double spaced with reasonable font and margins). Please check the course schedule for specific due dates.

Evaluation

To see how your submission will be evaluated, please review the rubric for this assignment.
ASSIGNMENT 1- The Delbouef Illusion
Applications of the Delbouef Illusion
Which circle below looks bigger?

Having already learned about the Ebbinghaus illusion this week, you were probably right in guessing that the circle with the ring around it appears larger than the non-surrounded circle. This is an example of the Delboeuf illusion, first identified by Belgian philosopher and mathematician Joseph Delbouef in 1887 or 1888. Modern psychologists have tested this illusion in various experiments, including one to determine if eyeshadow makes eyes look bigger (it does), and others to determine if the quantity of food on a plate looks larger if the plate is smaller. Watch the following Brain Games clip to learn more: Delboeuf Illusion and How Plate Size Influences Eating (0:52).

There have been several studies examining possible applications of this effect. Studies by Koert Van Ittersum and Brian Wansink at the Cornell Food and Brand Lab have studied the effect of the Delbouef illusion on eating and serving behavior. In several different experiments, they measured if people would take more or less than a typical serving size depending on the size of their plate, the color of the plate, the color of the tablecloth, and how much they knew about the Delboeuf illusion.

Assignment:
Your mom is in charge of providing meals at the upcoming family reunion and she is worried about not having enough linguini alfredo (a white pasta) to serve the entire crew. She wants to ensure that no one takes too much food.

STEP 1: Read through one of the following articles:

“Plate size and color suggestibility: The Delbouef Illusion’s bias on eating and serving behavior” by Koert Van Ittersum and Brian Wansink (2012).

“Visual illusions and plate design: The effects of plate rim widths and rim coloring on perceived food portion size” by McClain et al (2013).
STEP 2: Give your mom some advice on what size plates she should use, what color they should be, and what color tablecloths she should buy. Read through the study, then explain how your mom can utilize the Delboeuf illusion to minimize her costs at the reunion. Cite specific evidences (at least four specific examples) from the research.

The resulting paper should be 2-3 pages (double spaced with reasonable font and margins). Please check the course schedule for specific due dates.

Evaluation

To see how your submission will be evaluated, please review the rubric for this assignment.

https://www.nature.com/articles/ijo2013169.pdf

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