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Study: Names change how an infant's memory encodes objects
A new study shows that naming conventions will change how infants represent objects in their memories.
- Humans begin to encode for categories and individuals at an early age.
- A new study shows that language, specifically naming conventions, plays a role in how infants' memories encode objects either within groups or as individuals.
- Even before we speak our first words, the way words are used around us begin to shape our representation of the world.
The human mind brims with fascinating mental tools. One such tool is our ability to perceive and categorize the world for both groups and individuals. Because we are so accustomed to our minds, that may not seem remarkable but it's quite something. Even more remarkable, we develop this capacity at an incredibly young age.
Children understand, for example, that bunnies have long ears, fast feet, cotton-ball tails, and fluffy coats. But a child also understands that Sir Flops is both a bunny but an individual. He has a star-shaped patch on his rump, likes broccoli more than carrots, and enjoys a good scratch behind the ears. Children manage this distinction before they have acquired an encyclopedia's worth of names and details to check and cross-reference to ensure proper mental categorization. But how?
Drs. Alexander LaTourrette and Sandra Waxman, psychologists at Northwestern University, have proposed that language, specifically naming conventions, determine how infants encode objects into memory—whether as part of a group or as an individual. Their new study, published in the Proceedings of the National Academy of Sciences, suggests they are on to something.
A parade of boffs
An image showing the stuffed animals introduced during the training phase followed by the new ones introduced in the test phase.
To test their hypothesis, LaTourrette and Waxman did what all good scientists do: set up an experiment. They enlisted the help of 77 infants, each between eleven-and-a-half and twelve-and-a-half months old, and trained them to recognize stuffed animals. They showed the infants a parade of stuffed animals and introduced them with a novel name.
During this training phase, the infants were divided into three groups. The first group, the consistent name group, was introduced to the stuffed animals with a single signifier. For example, even though the stuffed animals were a piglet, kitten, duckling, and panda, each one would be referred to as a "boff."
The second group, the distinct name group, was also presented with the four stuffed animals. But this time, each one was given a unique signifier. The kitten would be called a "boff," but the duckling an "etch," the piglet an "arg," and the panda a "dov."
The third group was enlisted as the control. For this group, each stuffy introduction was paired with a monotone voice. This is because tone, unlike names, has been shown to not facilitate categorization.
The researchers' goal was to determine how each naming convention encoded the stuffed animals within the infants' memories over several training trials. When the stuffies were introduced as a "boff," then the infants' memories should encode them as a unified category. Like in our bunny example above, they would perceive the commonalities of "boffness"—big round eyes, soft fury, and cuddly tummies.
Conversely, when the stuffies were introduced by distinct labels, then the infants' memories should encode for individuation. As with Sir Flops, they would perceive distinguishing features and tag those in their memory for later recall—etch has yellow fur and wings while arg sports pink fur and a snout.
A boff by any other name?
Of course, LaTourrette and Waxman couldn't ask the infants how they remembered their colorful compatriots. So, they utilized a recognition memory test to find out. The researchers reintroduced the infants to the stuffed animals from the previous training alongside a never-before-seen fuzzy friend. The researchers then recorded the children's gazes.
They theorized that if infants stared equally at both "boffs," then they recognized the commonalities between them and had encoded for a category. However, if the infants stared longer at the new toy, that indicated that the infant recognized the original object and was spending time memorizing the new, individualized, object.
That's exactly what they found. Infants from the consistent name group stared at both stuffed animals for equal time, suggesting they recognized the commonalities at the expense of distinctive features. The distinct name group recognized the individuals more readily and turned their attention to the new stuffy. The control group only recognized the more recent stuffed animal.
"Our findings reveal a powerful and sophisticated effect of language on cognition in infancy: the way in which an object is named, as either a unique individual or a member of a category, influences how [twelve-month-old] infants encode and remember that object," the researchers write. "Hearing a consistent name applied to a set of objects focuses infants on the commonalities among them, while hearing distinct names applied to the same objects focuses infants on the uniqueness of each object."
The researchers expressed hope that their research would help cognitive psychologists gain a deeper understanding of how names influence people, from infancy to adulthood, in their conceptual representations. They also hope that this evidence opens further investigations, such as how familiar nouns (rather than novel names) influence infant representations.
They conclude, "Even a single naming episode can have a lasting impact, influencing how infants encode that object, represent it in memory, and remember it later."
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A cave in France contains man’s earliest-known structures that had to be built by Neanderthals who were believed to be incapable of such things.
In a French cave deep underground, scientists have discovered what appear to be 176,000-year-old man-made structures. That's 150,000 years earlier than any that have been discovered anywhere before. And they could only have been built by Neanderthals, people who were never before considered capable of such a thing.
Tea and coffee have known health benefits, but now we know they can work together.
Credit: NIKOLAY OSMACHKO from Pexels
- A new study finds drinking large amounts of coffee and tea lowers the risk of death in some adults by nearly two thirds.
- This is the first study to suggest the known benefits of these drinks are additive.
- The findings are great, but only directly apply to certain people.
Maybe you should enjoy this article with a cup of coffee or tea.<p> The <a href="https://drc.bmj.com/content/8/1/e001252?T=AU" target="_blank" rel="noopener noreferrer">study</a> involved 4,923 type 2 diabetics living in Japan. The average participant was 66 years old. All of the participants were taken from the rolls of the Fukuoka Diabetes Registry, a study geared at learning about the effects of new treatments and lifestyle changes on the health of diabetics. <br> <br> The participants filled out questionnaires concerning their health, diet, habits, and other factors. Among the questions were two focused on determining how much green tea or coffee, if any, the participants consumed over the course of a week. The health of the participants was recorded for five years. During this time, 309 of the test subjects died from a variety of causes. <br> <br> Subjects who drank more than one cup of tea or coffee per day demonstrated lower odds of dying than those who had none. Those who consumed the most tea and coffee, more than four and two cups a day, respectively, enjoyed the most significant reductions in their risk of death. This level of consumption was associated with a 40 percent lower risk of <a href="https://www.sciencedaily.com/releases/2020/10/201020190129.htm" target="_blank" rel="noopener noreferrer">death</a>. </p><p>Most interestingly, the effects of drinking tea and coffee appear to combine to reduce risk even further. Those who reported drinking two or three cups of tea a day and two or more cups of coffee were 51 percent less likely to die during the study, while those who drank a whopping four or more cups of tea and two or more cups of coffee had a 63 percent lower risk of <a href="https://www.medicalnewstoday.com/articles/diabetes-coffee-and-green-tea-might-reduce-death-risk" target="_blank" rel="noopener noreferrer">death</a>. </p>
So, should I start swimming in a vat of coffee and green tea?<iframe width="730" height="430" src="https://www.youtube.com/embed/LY0E-JQxeoY" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe><p> Not quite. </p><p> The primary takeaway from this study is that Japanese adults with type 2 diabetes who drink a lot of green tea and/or coffee die less often than similar people who do not. If this effect is caused by something in the drink, lifestyle choices people who drink that much tea all make, or something else remains unknown. The finding must be considered an association at this point. <br> <br> The eye-popping reductions in mortality rates are compared to the risk of death of others in the study. The people who died reported drinking less tea and coffee than those who lived. Unless you have several demographic and conditional similarities to the subjects of this study, you probably won't suddenly be at a two-thirds lower risk of death than your peers because you drink green tea. </p><p> Like all studies that depend on self-reporting, it is also possible that people misstated how much they consumed any one item. The study also did not look into other factors like socioeconomic status or education level, also known to impact death rates and potentially linked to coffee and tea consumption. </p><p> However, it is yet another study in the pile that suggests that <a href="https://www.healthline.com/nutrition/top-13-evidence-based-health-benefits-of-coffee" target="_blank" rel="noopener noreferrer">coffee</a> and <a href="https://www.healthline.com/nutrition/top-10-evidence-based-health-benefits-of-green-tea" target="_blank" rel="noopener noreferrer">green tea</a> are good for you. That much is increasingly <a href="https://www.health.harvard.edu/press_releases/health-benefits-linked-to-drinking-tea" target="_blank" rel="noopener noreferrer">agreed</a><a href="https://www.rush.edu/health-wellness/discover-health/health-benefits-coffee" target="_blank" rel="noopener noreferrer"> upon</a>. This study also suggests the benefits are additive, which is a new development.</p><p><br> So, while it isn't time to start the IV drip of green tea, a cup or two probably won't <a href="https://www.webmd.com/diabetes/news/20201022/coffee-green-tea-might-extend-life-for-folks-with-type-2-diabetes" target="_blank" rel="noopener noreferrer">hurt</a>. </p>
But most city dwellers weren't seeing the science — they were seeing something out of Blade Runner.
On Sept. 9, many West Coast residents looked out their windows and witnessed a post-apocalyptic landscape: silhouetted cars, buildings and people bathed in an overpowering orange light that looked like a jacked-up sunset.