Professor Michitaka Hirose and his team believed that, by making food look larger, people will want to use less. His study backed this up, finding that participants at 10% less when the cookies they ate appeared 50% bigger (that’s one big oreo!). Conversely they ate 15% more when the cookie was 2/3 of its real size.
As yet the team have no plans to commercialise the idea. See a report here. Any ideas about how the idea could be put into practice without fancy googles?