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A new study, conducted by Dr. Catherine Birken, a pediatrician and scientist at the Hospital for Sick Children in Toronto, Ontario, revealed the following: the more time children between the ages of six months and two years spent using handheld screens such as smartphones, tablets and electronic games, the more likely they were to experience speech delays. In the study, which involved nearly 900 children, parents reported the amount of time their children spent using screens in minutes per day at age 18 months. Researchers then used an infant toddler checklist, a validated screening tool, to assess the children's language development also at 18 months. They looked at a range of things, including whether the child uses sounds or words to get attention or help and puts words together, and how many words the child uses. Twenty percent of the children spent an average of 28 minutes a day using screens, the study found. Every 30-minute increase in daily screen time was linked to a 49% increased risk of what the researchers call expressive speech delay, which is using sounds and words. Commenting on the study, Michelle MacRoy-Higgins and Carlyn Kolker, both speech pathologists/therapists and co-authors of "Time to Talk: What You Need to Know About Your Child's Speech and Language Development," offered this advice: interact with your child. The best way to teach them language is by interacting with them, talking with them, playing with them, using different vocabulary, pointing things out to them and telling them stories.

It was found that kids who frequently use smartphones have delays in expressive speech. In an experiment, it was shown that for every 30 minutes of screen time, there was a 49% increased chance of speech delay. Even if parents are showing children educational videos, it's more important to have face-to-face interactions

"Our main conclusion is that delays in word onset facilitate word recognition, and that such facilitation is independent of the type of delay. ... Our findings support the perhaps counterintuitive conclusion that fillers like um can sometimes help (rather than hinder) listeners to identify spoken words. But critically, the data show that the same is true for silent pauses and pauses filled with artificially generated tones. "

"...people who speak more than one language don't exhibit symptoms of Alzheimer's disease until they have twice as much brain damage as unilingual people. It's the first physical evidence that bilingualism delays the onset of the disease. ... Despite the fact that both groups performed equivalently on all measures of cognitive performance, the scans of the bilingual patients showed twice as much atrophy in areas of the brain known to be affected by Alzheimer's."

People familiar with more than one language showed a later onset of dementia, according to a new study from Indian researchers. Multilingualism appeared to stave off dementia onset in several diagnostic categories, including front temporal and vascular dementia as well as Alzheimer's, according to the researchers' report in the online version of Neurology.

This article done talks about how children with autism have their "critical period" of language learning affected. Research was done through observation through an EEG which monitored babies of multiple age groups, specifically their auditory cortex.

An interview with Ellen Bialystok, a cognitive neuroscientist, about the advantages of being bilingual.

A cognitive neuroscientist, Ellen Bialystok has spent almost 40 years learning about how bilingualism sharpens the mind. Her good news: Among other benefits, the regular use of two languages appears to delay the onset of Alzheimer's disease symptoms. Dr. Bialystok, 62, a distinguished research professor of psychology at York University in Toronto, was awarded a $100,000 Killam Prize last year for her contributions to social science.

"In our next studies , we looked at the medical records of 400 Alzheimer's patients. On average, the bilinguals showed Alzheimer's symptoms five or six years later than those who spoke only one language. This didn't mean that the bilinguals didn't have Alzheimer's. It meant that as the disease took root in their brains, they were able to continue functioning at a higher level. They could cope with the disease for longer." No other website I have found has so comprehensively covered the various benefits of being bilingual. This is a concise interview that displays that bilingual people are not only better at multitasking but can also delay the onset of Alzheimer's by up to 5 years.

In a study, it is predicted that bilinguals have enhanced brain networks because they had a delayed onset of Alzheimer's by five years compared to monolinguals of similar educational backgrounds. Through CT scans, it was discovered that bilinguals physically had twice as much atrophy of the brain as monolinguals at the time symptoms started. This means that bilinguals showed no symptoms of Alzheimer's even though their brains physically looked like they did.

This article is about a study suggests that bilingualism can possibly decrease chances of getting dementia and cognitive decline in older people. The study was published in the journal Neurobiology of Aging. It hypothesized that because bilingual people can switch between two languages seamlessly, it can be used in multitasking, self-control, emotion management, possibly delaying dementia. However, the study only focused on bilingual people who use two languages everyday for a long time. Because of the different degrees of bilingualism, it's difficult to know if it really can delay dementia.

This article talks about the complexities of language in dementia patients, specifically the fact that they are most likely to revert to their primary language as their condition progresses. The study that was done for this article also expands on the possibility that speaking two or more languages can delay the onset of dementia for an average of five years.

A new prospective study of six-month-old infants at high genetic risk for autism identified weak head and neck control as a red flag for autism spectrum disorder (ASD) and language and/or social developmental delays.

For bilinguals, because both languages are active in the brain, the act of keeping the two languages separate sharpens the executive control system. Strengthening this area may have long-term benefits: namely, performing better on a variety of cognitive tasks and possibly delaying the onset of dementia later in life.

"Various language families differ in how they distribute components of meaning between speech and gesture--at least when referring to directional kinds of information. [...] De Ruiter is examining in greater detail the presumed interaction between speech and gesture for pointing motions. He has recorded dialogues between two people telling each other stories and has found that an extended gesture--such as when someone points up toward the sky--tends to delay the verbalization to which it refers ("the plane ascended at a steep angle"). Gestures also adapt to speech; when a storyteller has misspoken and stumbles momentarily, a preprepared gesture appears to be held in abeyance until the speech component is running smoothly again."

The largest study so far to ask whether speaking two languages might delay the onset of dementia symptoms in bilingual patients as compared to monolingual patients has reported a robust result. Bilingual patients suffer dementia onset an average of 4.5 years later than those who speak only a single language.

Here's some good news for the bilingual folks. You may have a better chance of delaying the onset of several different dementias, just by speaking a second language, a new study says.

Great find, Kai!

Around the world more than half (around 60 to 75 percent) speak at least two languages. Most countries have more than one official national language. For example south Africa has 11. So being monolingual like most native english speakers are, we are becoming the minority.

Multilingualism serves an extremely practical purpose. Languages change and develop through social pressures. Over time, different groups of early humans would have found themselves speaking different languages. Then, in order to communicate with other groups - for trade, travel and so on - it would have been necessary for some members of a family or band to speak other tongues. We can get some sense of how prevalent multilingualism may have been from the few hunter-gatherer peoples who survive today. "If you look at modern hunter-gatherers, they are almost all multilingual," says Thomas Bak, a cognitive neurologist who studies the science of languages at the University of Edinburgh. "The rule is that one mustn't marry anyone in the same tribe or clan to have a child - it's taboo. So every single child's mum and dad speak a different language." The article also provides a useful summary of the benefits of speaking at least one other language: bilinguals outperform monolinguals in a range of cognitive and social tasks from verbal and nonverbal tests to how well they can read other people. Greater empathy is thought to be because bilinguals are better at blocking out their own feelings and beliefs in order to concentrate on the other person's. Bilingualism can also delay the onset of dementia and increase cognitive recovery after a stroke. And in addition to social and cultural benefits, bil

"Research suggests that bilingual people can hold Alzheimer's disease at bay for longer, and that bilingual children are better at prioritising tasks and multitasking." See also: http://news.nationalgeographic.com/news/2011/02/100218-bilingual-brains-alzheimers-dementia-science-aging/

Ryan, you're the best!

This article talks about why it is impossible to study a sentence and look at the physical structure of the letters without reading or comprehending the sentence meaning. It references the Stroop Effect, which is a cognitive interference where there is a delay in the reaction time of a certain task occurs due to a stimuli conflicting. So when people are told to read a set of words such as "orange, purple, green, blue, yellow", but the color of these words are not that of what they read, people usually stumble as they read. It was interesting because when we are children, it was the opposite, but once we learn the skill to read, it becomes irreversible.

Multilingualism has been shown to have many social, psychological and lifestyle advantages, including superior ability to concentrate, solve problems and focus, better mental flexibility and multitasking skills. Moreover, researchers are finding a swathe of health benefits from speaking more than one language, including faster stroke recovery and delayed onset of dementia. A steady stream of studies over the past decade has shown that bilinguals outperform monolinguals in a range of cognitive and social tasks from verbal and nonverbal tests to how well they can read other people. Greater empathy is thought to be because bilinguals are better at blocking out their own feelings and beliefs in order to concentrate on the other person's.