Some multitasking is more taxing

Multitasking, most of asubstrid since digital devices became unavoidable.

---> Multitasking. Most of us have tried it since digital devices became unavoidable.

Now a study finds that some tasks are tougher to do at the same time than others.

Researchers had two groups of people complete a puzzle on a computer screen. 

One group also gave directions to another person via instant messaging on that same screen. 

The other group gave the directions through an audio chat.

Subjects who performed the visual and audio task had a 30% drop in the puzzle performance .

---> Subjects who performed the visual and audio task had a 30 percent drop in their puzzle performance.

But those who performed two visual tasks, the puzzle and instant messaging, had a 50% drop in puzzle performance. 

The study is in the Journal computers and human behavior using the same sensory system for two tasks actually uses a pair tension compensity more quickly and completely than if the task requires two  separate systems. 

---> The study is in the journal Computers in Human Behavior. Using the same sensory system for two tasks actually uses up our attention capacity more quickly and completely than if the task requires two separate systems.

Both groups thought they did better than actually they did.

But those who did two visual tasks thought that they did even better than the other group did, though the opposite was true. 

The researchers note that people may wrongly perceive visual tasks effortless, which might explain why people continue to text while driving. 

Sometimes with disasterous results.

출처: 60-second Mind 팟캐스트

http://www.scientificamerican.com/podcast/episode.cfm?id=why-texting-while-driving-will-neve-12-07-28

+ 흥미로운 연구다 ㅎㅎ 

같은 감각을 쓰는 두 과업 동시에 할 때 현저하게 성과가 안 좋음. 게다가 잘했다고 착각하고 있다니!

puzzle 말고 다른 task의 성과는 측정하지 않았는지 궁금. 나중에 읽어보자.

Wang, Z., David, P., Srivastava, J., Powers, S., Brady, C., D’Angelo, J., & Moreland, J. (2012). Behavioral performance and visual attention in communication multitasking: A comparison between instant messaging and online voice chat. Computers in Human Behavior, 28(3), 968-975.