Lifestyle

Dogs With Less Complex Facial Markings Found to Be More Expressive in their Communication with Humans

Published

1 year ago

August 12, 2023

Daily News Staff

Credit: The George Washington University Sonder, who is Courtney Sexton’s canine companion. « [VIDEO] Dogs With Less Complex Facial Markings Found to Be More Expressive in their Communication with Humans

Newswise — WASHINGTON (August 7, 2023) – The domestication of canines and their co-evolution with humans has fostered an incredibly unique relationship with these animals. Over time, our four-legged friends have adapted well to understanding human modes of communication, both verbal and nonverbal. However, researchers at the George Washington University say humans could do more to better understand our furry companions, and a dogs’ facial markings may be one key to meeting them halfway.

In a new paper published in the journal Animals, researchers from the GW Primate Genomics Lab found that dogs with plainer faces—e.g. dogs whose faces are one, solid color or dogs without any facial markings—appear to make more facial movements, or expressions when interacting with their human companions than dogs with more complex facial markings—dogs with multi-colored or patterned faces. The study also found that people are fairly good at assessing their dogs’ levels of expressivity overall, but people with canine companions between the ages of about two to seven years old are more accurate at judging their level of expressivity if their dog has a plainer face.

What’s Written on a Dog’s Face? 3 Qs with Courtney Sexton

The study involved over 100 dogs and their people. The researchers asked each study participant to record their dogs in four different conditions. The research team then utilized a standardized coding system called DogFACS to analyze each dog’s behavior and created a novel system to scale and evaluate facial markings and patterns on dogs’ faces. Study participants were also asked to complete a survey that included various demographics about the dogs and gauged how well the participant judged their dog’s expressions.

The researchers say these findings have real-world implications, not only for dog lovers, but for anyone interacting with, working alongside, or living in neighborhoods with canine companions.

“As dogs become more and more integrated into human society, it’s important that we understand how they communicate with us and how we can better communicate with them,” Courtney Sexton, the study’s lead author, says. “If we think about this in terms of welfare contexts, or dogs in shelters, or working dogs and service animals, or interactions with dogs in your neighborhood or people at a dog park, knowing what dogs are trying to tell us and what they might be thinking or feeling can really enhance both their experience and ours when we’re together.”

The study also found that senior dogs appear less expressive in their communication with their human companions, which Sexton suggests may be because older dogs have a longer, more well-established relationship with their human companion, so they don’t have to work as hard at being understood. The research team also found that working dogs or highly trained dogs were more expressive, where this sort of relationship demands fluent communication and people may be more adept at understanding their dogs’ expressions.

WATCH: In this video, Sexton discusses additional findings of interest that came out of their work and shares examples of how this research can improve canine-human communication and relationships.

Recordings of participating dogs in this research can be found on Instagram, @how_dogs_talk.

The paper, “What Is Written on a Dog’s Face? Evaluating the Impact of Facial Phenotypes on Communication between Humans and Canines,” was published in the journal Animals. Researchers from GW’s Center for the Advanced Study of Human Paleobiology and the Hecht Lab/Canine Brains Project at Harvard University as well as collaborators at Working Dogs for Conservation contributed to this study. Funding for research travel and research-related outreach came from Lewis N. Cotlow Field Research Fund and the Awesome Foundation, D.C. Chapter.

-GW-

Journal Link: Animals, July-2023

Source: George Washington University

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Lifestyle

Do Mom and Dad really know what’s best? A psychologist explains why kids see their parents as bossier than they are

Published

4 hours ago

December 22, 2024

The Conversation

parents — Nobody likes being told what to do, but a parent’s main job is to protect their kids. VioletaStoimenova/E+ via Getty Images

Annie Pezalla, Macalester College

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected].

Why do my parents always act like they know best? – Taliyah, age 12, Gwinnett, Georgia

Nobody likes getting bossed around, but your parents’ bossiness is probably well-intentioned.

As a psychologist who studies family relationships, I can tell you that a parent’s No. 1 job is to keep their kids safe. When a kid becomes a teenager, their world becomes more dangerous. Relationships with friends can become complicated and even toxic. Drugs and alcohol become more readily available and more tantalizing. Mental health can take a nosedive, and social media doesn’t help.

There are a bunch of reasons why these risks increase as you grow up, but peer pressure is mostly to blame.

To protect their teens from those dangers, parents have lots of strategies. They may discipline their kids – “You’re grounded!” – or challenge them to do better with phrases like, “When I was your age, I didn’t behave like that.” Or they might reprimand you: “I’m really disappointed in you.”

If your parents have ever acted like that with you, then it is likely about keeping you safe. Most parents understand the dangers you face. They may have experienced them personally and want you to avoid the same mistakes they made. If your parents’ guidance is keeping you from harm, I’d say that they really do know what’s best.

Your brain is still developing

OK, I got that out of the way. Are you still reading? I hope so, because this next part is more interesting and nuanced, and it’s about you and your brain.

Black and white image of a mom disciplining son. — The finger wag: Always in style. H. Armstrong Roberts/ClassicStock/Getty Images

Right now, your brain is undergoing remarkable growth. Starting around 10 years old, there’s a flurry of activity in what’s called the subcortical regions of your brain – a scientific term for the brain’s inner core. These parts of the brain are associated with emotions like anger, anxiety and defensiveness.

Are you feeling those emotions pretty regularly these days? If so, congratulations! You are 100% normal.

As you get older, your brain’s outer regions will become more developed, too. The last bit to mature is right behind your forehead, in an area called the prefrontal cortex. That area is associated with the ability to understand how someone else feels, and to put yourself in their shoes.

Experts who study brain development call this skill “perspective-taking.” It means that when you’re reprimanded for breaking the rules – for example, by staying out late – you don’t lash out defensively. Instead, you acknowledge that the person doing the reprimanding is worried or scared, or simply looking out for you.

Seeing life from another perspective

For adults, this perspective-taking can be really hard. For teens, I’m sorry to say, it’s even harder. That’s because your prefrontal cortex simply hasn’t finished developing yet; it won’t be fully functional until about age 25.

Your teenage brain currently allows you to do many incredible things, but you are biologically inclined to see life from your own perspective and struggle to understand why other people act the way they do.

In other words, your perceptions of your parents as bossy are based on the abilities of your yet-to-be fully developed brain. Meanwhile, what is fully developed is the part of your brain associated with those big emotions. That’s a tough combination.

A final note: You might think that your parents “always act like they know what’s best,” but, in my parenting research, it’s clear that they’re often unsure how to handle certain situations. Over 40% of the parents in my last study shared self-critical thoughts about how they’re doing as a parent. In other words, they’re struggling, too.

If you can, give your parents a break – and maybe even a hug.

Hello, curious kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to [email protected]. Please tell us your name, age and the city where you live.

And since curiosity has no age limit – adults, let us know what you’re wondering, too. We won’t be able to answer every question, but we will do our best.

Annie Pezalla, Visiting Assistant Professor of Psychology, Macalester College

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.

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astronomy for hobbyist

Stargazing Delight: Catch the Ursid Meteor Shower This Sunday Morning!

Published

6 hours ago

December 22, 2024

Lynette Young

As we cozy up to the end of another year, a delightful celestial event is gearing up to grace our skies: the Ursid meteor shower! Set to peak in the early morning hours of Sunday, December 22, this final meteor shower of the year offers a charming opportunity for some stargazing, even amidst the hustle and bustle of the holiday season.

A Little Background on the Ursids

Often overshadowed by the more prolific Geminid meteor shower that dazzles us just a week earlier, the Ursids tend to be a quieter affair. This year, their peak aligns perfectly with the winter solstice—the shortest day and longest night of the year. With the celestial display taking place during this time, there’s a unique chance to soak in some twinkling “shooting stars” above a snowy landscape.

@stmblog
🌌 Don’t miss the Ursid meteor shower this winter solstice! ✨ Bundle up, head outside, and enjoy the shooting stars! #Stargazing #Ursids ♬ original sound – STMDailyNews

Why Aren’t More People Watching?

Despite their charm, the Ursids are the least observed meteor shower, largely because of the busy holiday season and often unfavorable weather in the Northern Hemisphere—think cold nights filled with clouds. But if you missed the Geminids, fear not! The Ursids provide a wonderful pre-Christmas stargazing treat that is worth a look.

What to Expect from the Ursids

While the Ursids are not renowned for their activity—often delivering a mere 5 to 10 meteors per hour on a good night—there’s still magic in the unpredictability of astronomy. In years past, this meteor shower has surprised us with spectacular displays. Back in 1945 and 1968, observers saw around 100 meteors per hour, while the 1973 shower brought forth about 30 meteors! You never know when the Ursids may decide to put on a show, so keeping your eyes trained on the heavens could lead to some delightful surprises.

Understanding the Ursid Origin

The Ursids get their name from their radiant point in the sky, located in the constellation Ursa Minor, affectionately known as the Little Dipper. What we see as shooting stars are actually small fragments from the comet 8P/Tuttle, which Earth passes through each year. As the debris from the comet enters our atmosphere, it burns up and creates stunning streaks of light against the nighttime backdrop.

Tips for Optimal Viewing

So, how can you maximize your chances of catching the Ursid meteor shower this Sunday?

When to Watch: The Ursids run from December 17 to December 26, with the best viewing time occurring in the predawn hours of December 22. This is when the radiant is highest in the sky, offering the best chance to see those elusive meteors.
Find a Dark Spot: Get as far away from city lights as possible. A clear, dark sky will make it much easier to see the meteors.
Be Patient: Give your eyes time to adjust to the darkness—about 20 minutes is ideal. Bring a comfortable blanket or chair to sit back and enjoy the show.
Check the Weather: Clear skies are essential! Keep an eye on your local weather conditions to ensure a pleasant viewing experience.
Bring a Friend: Stargazing is always more fun when shared! Grab a friend or family member to join you, bringing some hot cocoa for added warmth and comfort.

As you bundle up and head outside this Sunday morning, remember to take a moment to appreciate the vastness of the universe above us. The Ursids may be a modest display compared to their more boisterous meteor shower counterparts, but each little shooting star tells a story of cosmic wonder and beauty. Happy stargazing, and may your sky be filled with twinkling lights! ✨

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Food and Beverage

Cinnamon, spice and ‘everything nice’ – why lead-tainted cinnamon products have turned up on shelves, and what questions consumers should ask

A Consumer Reports investigation revealed alarming lead levels in ground cinnamon, prompting concerns over safety, especially for children and pregnant women.

Published

11 hours ago

December 22, 2024

The Conversation

It’s important to buy cinnamon from reputable dealers. Anjelika Gretskaia/Moment via Getty Images

Katarzyna Kordas, University at Buffalo

Spices bring up feelings of comfort, cultural belonging and holidays. They can make our homes smell amazing and our food taste delicious. They can satisfy our cravings, expand our culinary horizons and help us eat things that we might normally dislike. Spices have health-enhancing properties and, in medicine, have been used to heal people since the ancient times.

Recently, however, spices have been getting a bad rep.

In September 2024, Consumer Reports, a nonprofit organization created to inform consumers about products sold in the U.S., investigated more than three dozen ground cinnamon products and found that 1 in 3 contained lead levels above 1 part per million, enough to trigger a recall in New York, one U.S. state that has published guidelines for heavy metals in spices.

The Food and Drug Administration issued three alerts throughout 2024, warning consumers about lead in certain brands of cinnamon products. Such notices rightfully put consumers on alert and have people wondering if the spice products they buy are safe – or not. https://www.youtube.com/embed/QxAwznMht8M?wmode=transparent&start=0 A Consumer Reports investigation of more than three dozen ground cinnamon products found that 1 in 3 contain lead levels above 1 part per million.

As an environmental epidemiologist with training in nutritional sciences, I have investigated the relationship between nutritional status, diets and heavy metal exposures in children.

There are several things consumers should be thinking about when it comes to lead – and other heavy metals – in cinnamon.

Why is lead found in cinnamon?

Most people are familiar with cinnamon in two forms – sticks and ground spice. Both come from the dried inner bark of the cinnamon tree, which is harvested after a few years of cultivation. For the U.S. market, cinnamon is largely imported from Indonesia, Vietnam, Sri Lanka, India and China.

One way that lead could accumulate in cinnamon tree bark is when trees are cultivated in contaminated soil. Lead can also be introduced in cinnamon products during processing, such as grinding.

When ground cinnamon is prepared, some producers may add lead compounds intentionally to enhance the weight or color of the product and, thus, fetch a higher sale price. This is known as “food adulteration,” and products with known or suspected adulteration are refused entry into the U.S.

However, in the fall of 2023, approximately 600 cases of elevated blood lead levels in the U.S., defined as levels equal to or above 3.5 micrograms per deciliter – mostly among children – were linked to the consumption of certain brands of cinnamon apple sauce. The levels of lead in cinnamon used to manufacture those products ranged from 2,270 to 5,110 parts per million, indicating food adulteration. The manufacturing plant was investigated by the FDA.

Horizontal photo of cinnamon trees, with trunks in foreground. — Cinnamon trees in Zanzibar, Tanzania. Zanzibar is known the world over as the ‘spice islands.’ Dong Jianghui/Xinhua via Getty Images

More broadly, spices purchased from vendors in the U.S. have lower lead levels than those sold abroad.

There is some evidence that cinnamon sticks have lower lead levels than ground spice. Lead levels in ground cinnamon sold in the U.S. and analyzed by Consumer Reports ranged from 0.02 to 3.52 parts per million. These levels were at least 1,500 times lower than in the adulterated cinnamon.

There are no federal guidelines for lead or other heavy metals in spices. New York state has proposed even stricter guidelines than its current level of 1 part per million, which would allow the New York Department of Agriculture and Markets to remove products from commerce if lead levels exceed 0.21 parts per million.

What does it mean that ‘the dose makes the poison’?

The current FDA guideline on daily intake of lead from diets overall is to limit lead intake to 2.2 micrograms per day for children. For women of reproductive age, this value is 8.8 micrograms.

The lead dose we are exposed to from foods depends on the level of lead in the food and how much of that food we eat. Higher doses mean more potential harm. The frequency with which we consume foods – meaning daily versus occasionally – also matters.

For spices like cinnamon, the amount and frequency of consumption depends on cultural traditions and personal preference. For many, cinnamon is a seasonal spice; others use it year-round in savory dishes or sauces.

Cinnamon is beloved in baked goods. Take a cinnamon roll recipe calling for 1.5 tablespoons (slightly less than 12 grams) of the spice. If a recipe yields 12 rolls, each will have around 1 gram of cinnamon. In the Consumer Reports investigation, some cinnamon products were classified as “okay to use” or “best to use.”

The highest value of lead in cinnamon products in the “okay to use” category was 0.87 parts per million, and in the “best to use” category, it was 0.15 parts per million. A child would have to consume 2.5 or more rolls made with the “okay to use” cinnamon to exceed the FDA guideline on limiting lead intake from foods to 2.2 micrograms per day, assuming that no other food contained lead. To exceed this guideline with “best to use” cinnamon, a child would have to eat 15 or more rolls.

Stick cinnamon and cinnamon powder on rustic wooden table. — Research suggests that ground cinnamon contains higher lead levels than cinnamon sticks. Helen Camacaro/Moment via Getty Images

Can cinnamon contribute to elevated blood lead levels?

Because of lead’s effects on development in early life, the greatest concern is for exposure in young children and pregnant women. Lead is absorbed in the small intestine, where it can latch onto cellular receptors that evolved to carry iron and other metals.

The impact of a contaminated spice on a person’s blood lead level depends on the dose of exposure and the proportion of lead available for intestinal absorption. For several spices, the proportion of available lead was 49%, which means that about half of the lead that is ingested will be absorbed.

Lead absorption is higher after a fast of three hours or more, and skipping breakfast may contribute to higher blood lead levels in children.

People who have nutritional deficiencies, such as iron deficiency, also tend to absorb more lead and have higher blood lead levels. This is because our bodies compensate for the deficiency by producing more receptors to capture iron from foods. Lead takes advantage of the additional receptors to enter the body. Young children and pregnant women are at higher risk for developing iron deficiency, so there is good reason for vigilance about lead in the foods they consume.

Studies show that among children with lead poisoning in the U.S., contaminated spices were one of several sources of lead exposure. Studies that estimate blood lead levels from statistical models suggest that consuming 5 micrograms of lead or more from spices daily could substantially contribute to elevated blood lead levels.

For occasional or seasonal consumption, or lower levels of contamination, more research is needed to understand how lead in spices would affect lead levels in the blood.

For people who have other sources of lead in their homes, jobs or hobbies, additional lead from foods or spices may matter more because it adds to the cumulative dose from multiple exposure sources.

How to test for elevated blood lead levels

The Centers for Disease Control and Prevention recommends that children at risk for lead exposure get a blood lead test at 1 and 2 years of age. Older children can also get tested. Finger-prick screening tests are often available in pediatric offices, but results may need to be confirmed in venous blood if the screening result was elevated.

Adults in the U.S. are not routinely tested for lead exposure, but concerned couples who plan on having children should talk to their health care providers.