The Mainichi News Quiz Answer for May 15
May 15, 2025 (Mainichi Japan)
A street in the city of Osaka's Kita Ward is seen painted yellow and with pictures reminiscent of an aquarium, on Dec. 10, 2024. (Mainichi/Haruno Kosaka)
In an attempt to discourage prostitution, authorities in Osaka recently painted a troubled street what color, inspired by a Nobel Prize-winning economist's "nudge" theory?
A) Green
B) Yellow
C) Pink
D) Blue
Correct Answer: B) Yellow
Authorities in Osaka painted a street notorious for prostitution yellow, drawing on "nudge theory," developed by Nobel Prize-winning economist Richard Thaler. Yellow was selected for its subconscious association with caution, designed to encourage pedestrians to move on quickly and not linger. Early findings suggest the intervention substantially reduced the number of people loitering on the street.
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