Do you see these dots as blue or purple? A new study has revealed your perception can change based on how often we are exposed to certain things Credit: Instagram. Researchers from Harvard ...

The optical illusion involves a series of 1,000 dots ranging from very blue to very purple. In the study, researchers asked participants to judge whether each dot was blue.

a protest in purple polka dots Published | Updated Stan Pike wanted to build a round front stoop on a home he owns in this small city seven miles east of Atlanta.