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Thursday, March 19, 2015

AMAZING! (true masterpiece in a matter of minutes)


Teens' approach to social media risk is different from adults'

In a study, the researchers report that the way teens learn how to manage privacy risk online is much different than how adults approach privacy management. While most adults think first and then ask questions, teens tend to take the risk and then seek help.
Teens are often more exposed to online risks because they are using social media as a platform for self-expression and as a way to gain acceptance from their peers. This desire for expression and acceptance can lead teens to disclose too much information. They may disclose vital contact information, or exchange photographs with strangers, for example.
When teens begin to struggle with privacy concerns, they often try to find possible protective actions to mitigate risk, according to the researchers. Those remedies include seeking advice from adults, removing online information, or going offline completely.
Haiyan Jia (author) said swimming lessons may be the best model for parents who want to encourage their teens to use the Internet and social media safely.
"It's a lot like learning to swim," Jia said. "You make sure they enter the water slowly and make sure they know how to swim before you let them swim on their own and in the deeper parts."
Researchers present their findings at the Computer-Supported Cooperative Work and Social Computing conference.

Forgetting mechanism in the human brain!



The research, published in Nature Neuroscience, is the first to isolate the adaptive forgetting mechanism in the human brain. The brain imaging study shows that the mechanism itself is implemented by the suppression of the unique cortical patterns that underlie competing memories. Via this mechanism, remembering dynamically alters which aspects of our past remain accessible.
Over the course of four selective retrievals the participants in the study were cued to retrieve a target memory, which became more vivid with each trial. Competing memories were less well reactivated as each trial was carried out, and indeed were pushed below baseline expectations for memory, supporting the idea that an active suppression of memory was taking place.
Dr. Maria Wimber (author) said, "It has significance for anything that relies on memory, but a really good example is that of eyewitness testimonies. When a witness is asked to recall specific information about an event, and they are quizzed time and time again, it could well be to the detriment of associated memories -- giving the impression that their memory is sketchy. In fact, the repeated recall is causing them to forget these details."