Which face mask is best for communication? A new study weighs in

Video above — WH: Biden to distribute masks in ‘equity’ pushThe receptionist at the doctor’s office asks a question from behind her double mask and face guard on the opposite side of a large, plastic partition.”Excuse me, what was that again?” It’s a phrase repeated a lot these days.Distorted by masks and myriad sound barriers, talking has become a challenge.”We have been concerned about this issue from the start of the pandemic as many with hearing loss struggle much more in conditions where others are wearing masks,” said Dr. Debara Tucci, who directs the National Institute on Deafness and Other Communication Disorders, a part of the National Institutes of Health.A new study has tackled the problem by comparing three ways of masking up: using two cloth masks, a surgical mask and an N95 mask, which filters 95% of tiny virus particles. The study did not investigate double masking.”In the context of the pandemic, we were motivated to look at this issue more closely, since there was little previous research on how different types of masks affect speech,” said study author Joseph Toscano, an assistant professor of psychological and brain sciences who directs the cognitive science program at Villanova University in Pennsylvania.”In high levels of background noise, the surgical mask was shown to least hinder speech recognition, said Dr. Jawad Fares, a postdoctoral research fellow in the department of neurological surgery at the Feinberg School of Medicine in Chicago’s Northwestern University.”The findings of the study are important in light of the current pandemic, as it acknowledges the communication challenges that we are facing,” said Fares, who was not involved in the study.Worldwide problemStatistics have shown almost 25% of people ages 65 to 74 and 50% of people over 75 in the United States have disabling hearing loss — where they wouldn’t be able to hear a vacuum cleaner, barking dog or even a baby’s cry.And it’s not just the elderly. Globally, some 466 million people have disabling hearing loss — 34 million are children, according to the World Health Organization. One in eight people in the United States 12 years or older have some form of hearing loss in both ears.Many people with hearing loss — and even some who don’t — rely on lip reading to follow conversational speech. That tool, of course, is removed by the use of masks during the pandemic.The good news is that when background noise was limited, as is typical of many everyday settings, the study found cloth, surgical and N95 masks allowed speech to be conveyed effectively, Toscano said.When background noise was loud enough that it might interfere with understanding speech, “we found that a surgical mask worked better than other masks for communication,” Toscano said.”The finding that surgical masks cause less of a problem than cloth masks or N95 masks is interesting,” said NIDCD’s Tucci. “However, these (surgical masks) are not always available to the public, and certainly early on use of these masks was discouraged so as not to interfere with supply for use in medical facilities.”Surgical masksDesigned to be used by surgeons and other health care professionals, surgical-grade masks are loose-fitting, disposable devices meant to “help block large-particle droplets, splashes, sprays, or splatter that may contain germs (viruses and bacteria), keeping it from reaching your mouth and nose,” according to the U.S. Food and Drug Administration.True medical-grade masks are made of three layers of nonwoven fabric typically made from plastic. The colored top layer of fabric is made of medical-grade spunbond polypropylene, which is a resin polymer heat-bonded into a web-like structure.Surgical masks also have small, bendable wires to help the mask stay in place, and are often tied behind the head or secured with ear ties. Such masks are one-time use only. If they are soiled or breathing becomes difficult, the mask should be carefully discarded and replaced, the FDA said.Clear masks are an option, tooThe NIDCD and the U.S. Centers for Disease Control and Prevention suggest teachers and caregivers wear clear masks or cloth masks with a see-through plastic panel when interacting with young children learning to read, students learning new languages or people with hearing loss or disabilities.That would certainly apply to caregiving in hospitals, nursing homes and long-term care facilities, and within families of mixed generations. Now it appears that there could be a new option, Tucci said, because the study found that “intelligibility is better with surgical masks.””It is worth emphasizing to the public that if they are struggling to communicate — for example if they have a close family member or friend who struggles to hear — it would be worthwhile to procure either surgical masks or masks with a transparent panel to see if that is helpful,” she said.Helpful hintsThere are also many other ways to improve communication.First, try to avoid loud background noise. Turn off the television, music or other distractions or move to a quieter area.Modulate your voice so your speech is deliberately clear and precise. This approach was just as easily understood with a mask on as when the mask was off, a separate new study published in Cognition found. Speaking this way is much more understandable than casual or emotionally charged and hurried speech.”Altering speech rate and vocal intensity is also helpful,” said Fares, who co-authored a December 2020 study on coping strategies to ease communication with face masksThat means slowing down the pace of your speech, even when you’re excited or upset.Speak face to face. Another good technique is “facing the communication partner directly,” Fares said. That ensures that the “communicator has the receiver’s attention while nothing is blocking the visual field between them.”Use nonverbal cues. This is critical for clear communication, experts said.Face masks only cover the middle and lower parts of the face, Fares said, so speakers can use their eyebrows, eyes and upper cheeks to improve understanding.”For example, the emotion of happiness is usually perceived when the corners of the lips rise upward. With face masks, happiness can be caught on the face by focusing on the wrinkles at the edge of the eyes,” Fares said. “The eyebrows, specifically, have been shown to help in conveying emotional expression and nonverbal communication.”Take sadness, for example. People tend to raise the inner corners of the eyebrows, with eyelids loose, Fares explained.”Expression of anger emphasizes the downward and central movement of eyebrows and the glaring eyes. The expressions of surprise and shock, however, are usually formed of elevated eyebrows,” he said.Body movement can also facilitate communication. Nod in agreement, hold up a finger to request a chance to speak or lean in to show engagement. Watch the other person carefully for signs of confusion, such as lack of eye contact or slumping of the body.Don’t be afraid to stop and ask the other person if they are having trouble. Check to make sure they understand the conversation, the NIDCD recommends. It’s also OK to write something down or use a talk-to-text application on a smartphone to facilitate communications.Don’t take off your masks. Whatever you do, just don’t, experts say.”First and foremost, the emphasis should be on the effectiveness of the masks for preventing the spread of the virus,” Toscano said. “Our study suggests that concerns about speech communication, on their own, don’t provide a compelling reason not to wear a mask in everyday settings.”

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