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Use of digital gadgets linked to short-term memory loss

(CNN) -- Ever go to dial a friend, actually dial, not just look up their name... and realize...You don't know their number anymore? Well a heavy reliance on technology may be linked to short-term memory loss.
That's according to a study out of South Korea.
Josiah, Jason, and Donnie are in college now -- been playing video games since...
"Probably 10."
"Since seven or eight."
...but have all those years of game playing improved their cognitive ability?
"I guess I have better hand eye coordination maybe."
A new study from South Korea -- some believe to be the most digitally advanced society on earth -- says some South Korean teens are showing signs of digital dementia, short-term memory loss, blaming overuse of smart phones and game devices for hampering the balanced development of the brain.
"I don't think it affects my memory. Wastes my time for sure."
Donnie Wilcox sees some merit to the study.
The reason: Digital devices remember for you.
"We just assume we can use technology for things. We always used to have to remember them."
Avid texter Remi agrees.
"You don't have to think about it very much, anymore, which is kind of sad."
The study found a correlation between heavy consumption of digital gadgets and short-term memory loss in young people.
Luke Clearwater believes the study.
"Your news feeds, the plot of the video game... It's not really meant to keep your brain focused on one specific thing for a long amount of time, and it just trains our minds to now want to do that," he said.
"...So it comes down to exercising your brain, that left and right brain kind of thing, remembering something like a phone number, our devices do that now."
...so we did a simple test -- ask the digital generation  X'ers to recite a phone number of a close friend.
"I just go to the contact and click the name and the number, and it starts calling,"
"...But you probably don't even remember the number,"
"No, not at all."
"You have his phone number on your phone."
"...But you just couldn't tell me what it is right."
"...Cause I don't remember it."
"What’s his phone number?"
"I couldn't tell you that,"
"Do you know what his phone number is?"
"No, I never bothered to learn."