Latest revealing about the dress that separates the net in the past 2 years

As a result of the latest study, people who stay up late will see a blue-black dress, while the group wakes up early to identify it as yellow-white.

First published on February 25, 2015 by Caitlin McNeill - a 22-year-old Scottish singer - at Tumblr, the question of the color of the dress quickly became a hot topic online.

Not only are the "green - black" and "yellow - white" factions, some people even look at the dress each time making a different color. In fact, it is blue - black.

In the past 2 years, many studies have been conducted to answer questions: Why do 2 people who see photos (top of the screen, time) claim that the dress is completely different colors?

Caitlin shared a photo of the dress that caused tens of millions of controversies to be shared online (left).The image shows the true color of the product provided by Roman Originals (UK).(Photo: Caitlin McNeill, PA).

According to BuzzFeed, a neuroscientist at New York University, Pascal Wallisch, he began to study why many people looked at one thing, but commented differently about its color, a month after the dress. green - black or yellow - white "storm" network.

TS Wallisch surveyed more than 13,000 people who viewed the dress photo. They were asked if it was taken when it was taken, it was in the absence of light. Indeed, the way the surveyors perceived this aspect greatly influenced the comment on color.

Specifically, among those who thought the dress was taken in the dark, 4 out of 5 believed that it was yellow - white. However, only half of the group's people gave the opinion that the dress was taken in the bright spot, claiming it had this color.

Dr. Wallisch hypothesized that the time of human activity, or more specifically the time of exposure to sunlight , was the determining factor of the difference.

Dr. Wallisch proved that when the yellow color was reduced in the original photo, the dress was blue - black.(Photo: Daily Mail).

"The original photo is too bright, the lighting conditions are not clear. Therefore, we learn how the illuminated outfit affects the color we see.

The shadows are blue, so when using the software to reduce this level of color in the photo, the dress is clearly yellow - white. Similarly, artificial light is usually yellow. So, when reducing this color, we have a blue-black dress.

Thus, when assessing the color of an object, the lighting conditions must be taken into account , "explained the American doctor.

Simply put, people who get up early, go to bed early and have lots of sun exposure are more likely to see a white-yellow dress.

In contrast, the "night owl" group - those who are more exposed to artificial light - will find it blue - black.

Dr Wallisch added: "This result demonstrates that the types of light affect how people perceive color . Factors such as gender, age have little effect."

For scientists who have studied the same problem, the results of Dr. Wallisch's research published in Arvojournals have a significant meaning, since it is the largest scale to date.

The family of Caitlin McNeill (leftmost) - the initiator of the endless battle of the color of the dress - was awarded $ 10,000 by the famous MC Ellen DeGeneres.(Photo: Ellen Show).

Ms. Lisa Feldman Barrett - Professor of Psychology at Northeastern University, USA - expressed to BuzzFeed that the results of Dr. Wallisch are very convincing. She belonged to the group who saw the yellow-white dress and matched his descriptions.

Dale Purves, a researcher at Duke University, said that although Dr. Wallisch's research is quite clear and grounded, he still thinks that hypothesis has not fully explained the phenomenon. Mr. Purves was an early riser, but found the dress blue-black.