Monday, December 31, 2012

Can E-Readers Really Ease Reading for Dyslexics?

In a study released this month by the Proceedings of the National Academies of Science, for example, a team of researchers from the University of Padova in Italy reported that extra-large spacing between letters allowed a group of dyslexic children to read text significantly faster and with fewer than half as many errors as when they read passages with standard spacing.

Extra large spacing helps dyslexic children, explains lead author Marco Zorzi, because they are especially affected by a perceptual phenomenon known as “crowding”: the interference with the recognition of a letter by the presence of the letters on either side.

When each letter is given breathing room, dyslexic readers are less apt to get confused. (Interestingly, research suggests that the standard spacing between letters is ideal for normal readers: they read more slowly and haltingly when spacing is increased.)

Not only the spacing between letters, but the size of the letters themselves affects how quickly and easily dyslexics read.

In a study led by psychologist Beth O’Brien of Tufts University and published in the Journal of Research on Reading in 2005, the authors presented passages printed in progressively bigger letters to groups of dyslexic and normal readers, timing how long it took the participants to read each one.

The children with dyslexia reached their maximum reading speed at a letter size bigger than that required by children who did not have the disorder.

Even the font in which a text is printed may influence how readily a dyslexic is able to read. Last year, Christian Boer, a graphic designer from the Netherlands who is himself dyslexic, introduced a font he created to reduce dyslexic readers’ tendency to misconstrue letters like “d” and “b.”

Boer accentuated certain features of the letters in his font, called Dyslexie, to make them harder to confuse with each other, and he inserted generous amounts of space between letters and words.

Once, such innovations would have required the laborious printing of special texts for dyslexics. But with the advent of e-readers, creating a dyslexia-friendly document is as simple as changing the settings on a digital device.

Indeed, some dyslexics are already doing so—such as the prominent economist Diane Swonk, who has spoken about how she uses her Kindle to adjust the font and limit the number of words she sees when she reads onscreen.

Playing around with the size and spacing and look of letters isn’t a cure for dyslexia. But until science finds one, such manipulations can help dyslexic children read with more ease, and even pleasure.

Dyslexia: Signal Processing Disorder and the Brain

It is said that to participate successfully in life, it is important to be able to read and write.

Nevertheless, many children and adults have difficulties in acquiring these skills and the reason, is they suffer from dyslexia, which can have a variety of ill-defined symptoms.

Thanks to research carried out by Begona Díaz and her colleagues at the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig, a major step forward has been made in understanding the cause of dyslexia.

The scientists have discovered an important neural mechanism underlying dyslexia and shown that many difficulties associated with dyslexia can potentially be traced back to a malfunction of the medial geniculate body in the thalamus.

The results may provide an important basis for developing potential treatments.

People who suffer from dyslexia have difficulties with identifying speech sounds in spoken language.

For example, while most children are able to recognise whether two words rhyme even before they go to school, dyslexic children often cannot do this until late primary school age.

Those affected suffer from dyslexia their whole lives. However, there are also always cases where people can compensate for their dyslexia.

"This suggests that dyslexia can be treated. We are therefore trying to find the neural causes of this learning disability in order to create a basis for improved treatment options," says Díaz.

Between five and ten percent of the world's children suffer from dyslexia, yet very little is know about its causes. Even though those affected do not lack intelligence or schooling, they have difficulties in reading, understanding and explaining individual words or entire texts.

The researchers showed that dyslexic adults have a malfunction in a structure that transfers auditory information from the ear to the cortex is a major cause of the impairment: the medial geniculate body in the auditory thalamus does not process speech sounds correctly.

"This malfunction at a low level of language processing could percolate through the entire system. This explains why the symptoms of dyslexia are so varied," says Díaz.

Under the direction of Katharina von Kriegstein, the researchers conducted two experiments in which several volunteers had to perform various speech comprehension tasks.

When affected individuals performed tasks that required the recognition of speech sounds, as compared to recognize the voices that pronounced the same speech, magnetic resonance tomography (MRT) recordings showed abnormal responses in the area around the medial geniculate body.

In contrast, no differences were apparent between controls and dyslexic participants if the tasks involved only listening to the speech sounds without having to perform a specific task.

"The problem, therefore, has nothing to do with sensory processing itself, but with the processing involved in speech recognition," says Díaz. No differences could be ascertained between the two test groups in other areas of the auditory signalling path.

The findings of the Leipzig scientists combine various theoretical approaches, which deal with the cause of dyslexia and, for the first time, bring together several of these theories to form an overall picture.

"Recognising the cause of a problem is always the first step on the way to a successful treatment," says Díaz.

The researchers' next project is now to study whether current treatment programmes can influence the medial geniculate body in order to make learning to read easier for everyone in the long term.

Friday, December 28, 2012

Dyslexia: Achieve your Aspirations - video



Role model Justin Hammond works for local government. As he was growing up, Justin refused to let dyslexia stop him achieving his aspirations.

He saw that other people with dyslexia were doing great things and he realised he could too.

"Think about what you really want and go for it. Don't let anything stop you at all"

Saturday, December 22, 2012

Adult ADHD: Denial in Adults wrecks Family Life

"My husband won't seek counseling or take meds for attention deficit, even though two of our kids have been diagnosed with it. His forgetfulness, procrastination, and inability to keep promises to our children upsets all of us." 

Many adults who live with undiagnosed ADHD do not understand the impact their symptoms have on those around them.

Your best bet is to start a polite and patient, but firm, campaign to help him understand how his actions -- inactions, in some cases -- affect you and your family.

It's important that you approach the subject in a noncritical, nonjudgmental way.

If you don't, you will make him defensive and unwilling to take your concerns seriously.

Communicate carefully with your husband. Broach the subject by saying, "I felt sad when we were late for Lydia's birthday party" instead of  "I was angry that you made us late for the birthday party."

Tell them, "I love you, but I feel I'm not getting enough attention from you to be happy" instead of "You never pay attention to me!"

Since your kids have been diagnosed with ADHD, it may be easier to get your husband thinking about the disorder as it relates to them.

Many adults, after reading books to learn how to help their children, see their symptoms more clearly and think about their problems in a new light.

Don’t make the mistake of taking charge of your kids' ADHD challenges without him. You'll miss out on an opportunity to discuss things with him.

ADHD: Medication addresses the condition not Motivation

"I take ADHD medication, and it has helped me focus at work and at home but it hasn’t helped with my motivation. I still don’t want to clean up or get organised. Why don’t meds for attention deficit improve my motivation?" 

Lots of people ask this question but believe me, it sounds as if your medication is doing what it should do -- improving your focus and your attention to detail, making things easier to remember, and making you more aware of time.

However, medication doesn’t necessarily improve your motivation, especially for doing the tasks that you describe. But don't be alarmed. Self motivation can be learned.

Chores such as this will probably never be fun. However, if medication makes it easier for you to consider doing a task, and to stay focused while you are working, you may find that, over time, you will become motivated to do things.

It will become a matter of developing a more positive mindset to tackle challenges instead of avoiding them.

Of course you can sit around waiting for that to happen, which I don't recommend. Better if you can take some positive steps to get support to increase your motivation.

There are numerous self-help books, motivational coaches and psychologists who dedicate their lives to supporting people with motivation issues.

In most cases it's not the task itself, it's getting 'started.' It may help to ask someone to get you started and then you can carry on regardless.

Make a written list or plan of chores and tackle them one at a time. After you have completed one give yourself a small reward; a cup of coffee and a biscuit, will suffice.

Mundane chores, like cleaning up, are generally boring for everyone, but you will feel accomplished when you have made the effort. 

You will be able to appreciate the benefit of doing it and see yourself as capable of accomplishing it. This will lift your confidence.

The feel-good thoughts you get will increase your confidence and willingness to perform other mundane chores and tackle other issues you normally avoid but never be afraid to ask someone for help, even if it's only to get you started.

Medication may be only half the solution, a more positive mindset is the other half and you need them both.

Work on your motivation by seeking support from online articles, books, family, trained experts or medical psychologists. They are waiting and wanting to help and support you.

Friday, December 21, 2012

Dyslexia and Reading PDFs: callas software pdfGoHTML

Callas software has released pdfGoHTML, a free Adobe Acrobat plug-in converting tagged PDF files into HTML supporting the ISO PDF/UA standard for universally accessible PDF documents and forms.

One simple click on the plug-in button converts the tagged PDF into HTML that is opened in the default browser.

In the resulting HTML different views can be selected to examine the tagging structure, have an easier reading experience or make the document more easily readable for people with visual disabilities or dyslexia.

Callas software, known for its quality control and document archival software, worked closely with its sister company axaio software when focusing its attention on tagged PDF.

Last year, Axaio software released its MadeToTag product, an Adobe InDesign plug-in to streamline tagging of Adobe InDesign files and create tagged PDF files.

Tagged PDF files are essential for screen reader devices helping visually impaired people or reading software for people with learning disabilities such as dyslexia.



In addition, tagged PDF files enable substantially better indexing by search engines and a more reliable text extraction or conversion to other formats.

It is this last property of tagged PDFs that is used by pdfGoHTML to allow high quality conversion of tagged PDFs into HTML.

When opening a PDF file, pdfGoHTML immediately indicates whether or not the file is tagged and allows a one-button conversion into HTML in the default browser.

Users can easily switch how the HTML is displayed, to adjust it to their specific needs: browser default, structure tags, easy reader, inverted, low vision, and dyslexia.

Thursday, December 20, 2012

The Curiosity Gene and ADHD



If an urge to explore rises in us innately, perhaps its foundation lies within our genome. 
In fact there is a mutation that pops up frequently in such discussions: a variant of a gene called DRD4, which helps control dopamine, a chemical brain messenger important in learning and reward.

Researchers have repeatedly tied the variant, known as DRD4-7R and carried by roughly 20 percent of all humans, to curiosity and restlessness.

Dozens of human studies have found that 7R makes people more likely to take risks; explore new places, ideas, foods, relationships, drugs, or sexual opportunities; and generally embrace movement, change, and adventure.

Studies in animals simulating 7R’s actions suggest it increases their taste for both movement and novelty, it is also closely associated with ADHD.

The people who keep this spirit of playful engagement with the possibilities of the moment closest at hand, the Cooks and Tupaias, the Sally Rides and Michael Barratts of this world are the explorers and adventurers."

Restless Genes-David Dobbson how we evolved to explore.

Complement with Neil deGrasse Tyson on why we’re wired for curiosity

Childhood Bullying Has Long term Effects: Mood Disorders

Bullying by peers changes the structure surrounding a gene involved in regulating mood, making victims more vulnerable to mental health problems as they age.

This is the reported finding of a recent study by a researcher at the Centre for Studies on Human Stress (CSHS) at the Hôpital Louis-H. Lafontaine and professor at the Université de Montréal suggests that .

The study published in the journal Psychological Medicine seeks to better understand the mechanisms that explain how difficult experiences disrupt our response to stressful situations.

"Many people think that our genes are immutable; however this study suggests that environment, even the social environment, can affect their functioning. This is particularly the case for victimization experiences in childhood, which change not only our stress response but also the functioning of genes involved in mood regulation," says Isabelle Ouellet-Morin, lead author of the study.

A previous study by Ouellet-Morin, conducted at the Institute of Psychiatry in London (UK), showed that bullied children secrete less cortisol -- the stress hormone -- but had more problems with social interaction and aggressive behaviour.

The present study indicates that the reduction of cortisol, which occurs around the age of 12, is preceded two years earlier by a change in the structure surrounding a gene (SERT) that regulates or transports serotonin, and is a neurotransmitter involved in mood regulation and depression.

To achieve these results, 28 pairs of identical twins with a mean age of 10 years were analyzed separately according to their experiences of bullying by peers: one twin had been bullied at school while the other had not.

"Since they were identical twins living in the same conditions, changes in the chemical structure surrounding the gene cannot be explained by genetics or family environment. Our results suggest that victimization experiences are the source of these changes," says Ouellet-Morin.

According to the author, it would now be worthwhile to evaluate the possibility of reversing these psychological effects, in particular, through interventions at school and support for victims.

The Power of a Mother's touch

Mothers who stroke their baby's body in the first few weeks after birth may change the effects that stress during pregnancy can have on an infant's early-life development, researchers have found.

Researchers at the Universities of Liverpool, Manchester, and Kings College, London have been studying whether stress in pregnancy can lead to emotional and behavioural problems in children for many years.

Attention is now moving towards how parents might alter these effects after birth.

Researchers are aiming to improve understanding of the issues to help enhance information services for pregnant women and their partners.

Scientists believe that stress in pregnancy can have an effect on an infant in later life by reducing the activity of genes that play a role in stress response.

Studies of early care-giving in rats have found that high levels of mothers' licking and grooming their pups soon after birth can increase the activity of these genes and may reverse the effects of prenatal stress on their offspring.

Some studies suggest that impacts of prenatal stress on an infant's development can be either positive or negative depending on the type of environment a child encounters. It is thought that some children may experience the effects through being more prone to high levels of fear or anger.

The team at Liverpool, Manchester and London followed first-time mothers from pregnancy through to the first years of their children's lives as part of Medical Research Council (MRC) funded research, The Wirral Child Health and Development Study.

It showed that links between symptoms of depression in pregnancy and subsequent infant emotions of fear and anger, as well as heart rate response to stress at seven months of age changed by how often a mother stroked their baby on the head, back, legs and arms in the early weeks of life.

The results suggest that stroking may alter gene activity in a similar way to that reported in animals.

Dr Helen Sharp, from the University of Liverpool's Institute of Psychology, Health and Society, explains: "We are currently following up on the Wirral children in our study to see if reports of early stroking by their mothers continue to make a difference to developmental outcomes over time.

"The eventual aim is to find out whether we should recommend that mothers who have been stressed during pregnancy should be encouraged to stroke their babies early in life"

The study is published in the journal PLOS ONE.

What is Working Memory?

Working memory is your brain's Post-it note, says Tracy Packiam Alloway, Ph.D., assistant professor of psychology at the University of North Florida in Jacksonville, Florida. "It makes all the difference to successful learning," she says.

You can think of working memory as the active part of your memory system. It's like mental juggling, says H. Lee Swanson, Ph.D., distinguished professor of education with the Graduate School of Education at the University of California, Riverside.
"As information comes in, you're processing it at the same time as you store it," he says. A child uses this skill when doing math calculations or listening to a story, for example.

She has to hold onto the numbers while working with them. Or, she needs to remember the sequence of events and also think of what the story is about, says Swanson.

Brief by design, working memory involves a short-term use of memory and attention, adds Matthew Cruger, Ph.D., neuropsychologist with the Learning and Diagnostics Center at the Child Mind Institute in New York City.

"It is a set of skills that helps us keep information in mind while using that information to complete a task or execute a challenge," he says.

Working memory is like a foundation of the brain's executive function. This is a broad and deep group of mental processes. They allow you to do things like plan ahead, problem solve, organize, and pay attention.

"Working memory helps us stay involved in something longer and keep more things in mind while approaching a task," says Cruger. "And, how can you plan ahead if you don't use working memory to keep your goal in mind, resist distractions, and inhibit impulsive choices?"

But if you struggle with working memory, pieces of information may often evade your grasp like a quickly evaporating dream. You find yourself stripped of the very thing you need most to take action.

Read more about Working memory here