How Do Blind People Know When To Stop Wiping
How Do Blind People Know When To Stop Wiping – Blind people cannot see color but perceive it as blind John Hopkins overturns the assertion that blind people do not have deep knowledge of visual phenomena.
People who are congenitally blind do not see bananas as yellow, but researchers at Johns Hopkins University have found that, like all blind people, congenitally blind people understand why two bananas can be the same color. Challenging philosopher John Locke’s belief that people who are born blind can never perceive color, a team of cognitive neuroscientists has shown that blind people actually perceive it the same way.
How Do Blind People Know When To Stop Wiping
“A common insight going back to folk is that a blind person can learn the arbitrary truth that marigolds are ‘yellow’ and tomatoes are ‘red,’ but will lose a deeper understanding of color,” said senior author Marina Bidney. “The idea is that to know something you have to see it yourself, and without seeing it you establish the fact by talking to people. This study with blind people suggests the opposite. Talking to people leads to a deeper understanding of color than random. Color fact.”
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In a two-stage experiment, blind and sighted adults were first asked about the common color of objects (voluntary facts), why they were that color, and the probability of the same color among these randomly selected objects. The objects were a mix of natural (fruits, plants, and gems) and man-made (pens, dollar bills, stop signs).
Although blind participants did not always agree with blind subjects about facts about arbitrary colors, such as that the banana was yellow, the blind subjects’ reasoning about why the banana was yellow and judgments about how similar the two colors were improved (color constancy). The team found a match to watch. Numerals are retained on a wide variety of items, including those colored for special reasons, such as stop signs, coins, and even wedding dresses.
“The idea is that in order to know something you have to see for yourself, and you have to talk to people to establish the fact that you can’t see. This study with blind people suggests otherwise.”
Lead author Judy Kim, a former graduate student at Johns Hopkins University and now a postdoctoral fellow at Yale University, said blind and visually impaired people show similar depth of understanding when explaining why certain colors of objects exist.
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The color of the polar bear was an example of revealing experience. All blind participants said they were white to blend in with the snow, but some blind participants said they were black to absorb heat and stay warm. “While sighted people disagree about polar bear color, blind people provide a consistent interpretation of polar bear color,” Kim said.
Next, the team asked participants to make predictions about the colors of imaginary objects they had never seen or heard of before in an “island explorer” scenario. “We wanted to see how people think about things they haven’t tried before,” Kim said. “It’s a good way to test the depth of people’s understanding of color.”
The team explained to the participants about the elements of remote islands where people have their own language, tools, machines, customs etc. The environment of the island is also unique. Participants heard things like “green spiky beads, hand-shaped” and “triangular tool, yellow, thumb-shaped” and then wondered how likely it was that one of these objects was the same. the color
Blind and sighted subjects made similar judgments about these new objects, showing that their knowledge of color generalized to new examples and was not based on recollection.
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In a related recent study, the team similarly found that even though blind people can’t see animals like elephants and lions, they make educated guesses about their presence based on their understanding of why they see animals (for example, when they sit on the ground, mammals have legs).
Bedney then wants to find out how color information is processed in the brain, and work with blind children to learn how and when blind and visually impaired people acquire color perception.
“We assume this happens through informal learning through conversation and reading, but when does it actually happen?” she said. “Do blind and sighted children learn this information in the same way? Are there developmental differences between blind children acquiring information at an early age before using language and blind children acquiring information only after learning and understanding speech?”
Authors include Brianna Ahmer, a former research assistant at Johns Hopkins University, and Veronica Montani-Manara, a Johns Hopkins alumna currently in the graduate program at Northwestern University, The Future of Accessibility. A smart shoulder strap that uses autonomous driving technology to guide the blind and visually impaired with 3D sound. The perfect complement to your white cane or guide dog. All in one.
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