January 2012

baby image

Baby photo by emdot : Creative commons licens

Measuring how a baby’s brain reacts to shifts in eye contact might help predict the development of autism symptoms from as young as six months, a new study has found.
La Trobe University psychologist Dr Kristelle Hudry, from the Olga Tennison Autism Research Centre on the Melbourne campus, is one of the key researchers in the international study which was released today.

She says the results of the study ‘Infant neural sensitivity to dynamic eye gaze is associated with later emerging autism’ have been published in the January 26th issue of the journal Current Biology.

‘These results are important because early diagnosis can secure the best possible outcome for individuals with autism spectrum disorders (ASD), through early access to intervention. They also open up new avenues for scientists to carry out further research, to help us better understand the condition.’
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People Lie More When Texting

Texting

Image : Creative Commons by Jhaymesiviphotography

Sending a text message leads people to lie more often than in other forms of communication, according to new research by David Xu, assistant professor in the W. Frank Barton School of Business at Wichita State University.

Xu is lead author of the paper, which compares the level of deceit people will use in a variety of media, from text messages to face-to-face interactions.

The study will appear in the March edition of the Journal of Business Ethics. The other co-authors are professor Karl Aquino and associate professor Ronald Cenfetelli with the Sauder School of Business at the University of British Columbia.

How the study worked
The study involved 170 students from the Sauder School performing mock stock transactions in one of four ways: face-to-face, or by video, audio or text chatting.

Researchers promised cash awards of up to $50 to increase participants’ involvement in the role play. “Brokers” were promised increased cash rewards for more stock sales, while “buyers” were told their cash reward would depend on the yet-to-be-determined value of the stock.

The brokers were given inside knowledge that the stock was rigged to lose half of its value. Buyers were only informed of this fact after the mock sales transaction and were asked to report whether the brokers had employed deceit to sell their stock.

The authors then analyzed which forms of communication led to more deception. They found that buyers who received information via text messages were 95 percent more likely to report deception than if they had interacted via video, 31 percent more likely to report deception when compared to face-to-face, and 18 percent more likely if the interaction was via audio chat.

The fact that people were less likely to lie via video than in person was surprising, Xu said, but makes sense given the so-called “spotlight” effect, where a person feels they’re being watched more closely on video than face-to-face.

Xu said this kind of research has implications for consumers to avoid problems such as online fraud, and for businesses looking to promote trust and build a good image, Xu said.

Source:Wichita State University

depressed old man

Getty Images

Researchers involved in the Mayo Clinic Study of Aging reported today that more than 6 percent of Americans age 70 to 89 develop mild cognitive impairment (MCI) every year. Also, the condition appears to affect men and those who only have a high school education more than women and those who have completed some higher education. People with MCI are at the stage between suffering the normal forgetfulness associated with aging and developing dementia, such as that caused by Alzheimer’s disease.

People with MCI have mild problems with thinking and memory that do not interfere with everyday activities, although their forgetfulness is often apparent to them and their friends and family. While not everyone with MCI develops dementia, an estimated 5 to 10 percent do.


About mild cognitive impairment

Symptoms of MCI include:

  •  Difficulty learning and remembering new information
  •  Difficulty solving problems or making decisions
  •  Forgetting recent events or conversations
  •  Taking longer to perform complex or difficult mental activities.

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with a drop of blood

Flickr: By Pedro Moura Pinheiro

Pilot study suggests infrared analysis of white blood cells is a promising strategy for diagnosis of Alzheimer’s disease

Spanish researchers, led by Pedro Carmona from the Instituto de Estructura de la Materia in Madrid, have uncovered a new promising way to diagnose Alzheimer’s disease more accurately. Their technique, which is non-invasive, fast and low-cost, measures how much infrared radiation is either emitted or absorbed by white blood cells. Because of its high sensitivity, this method is able to distinguish between the different clinical stages of disease development thereby allowing reliable diagnosis of both mild and moderate stages of Alzheimer’s. The work is published online in Springer’s journal Analytical & Bioanalytical Chemistry. [continue reading…]