Our brain works most efficiently when it can focus on a single task for a longer period of time.
Previous research shows that multitasking, which means performing several tasks at the same time, reduces productivity by as much as 40%. Now a group of researchers specialising in brain imaging has found that changing tasks too frequently interferes with brain activity. This may explain why the end result is worse than when a person focuses on one task at a time.
'We used functional magnetic resonance imaging to measure different brain areas of our research subjects while they watched short segments of the Star Wars, Indiana Jones and James Bond movies,' explains Aalto University Associate Professor Iiro Jääskeläinen.
Inadequacy and overloading
Jääskeläinen recommends completing one task each day rather than working on a dozen of different tasks simultaneously.
'It's easy to fall into the trap of multitasking. In that case, it seems like there is little real progress and this leads to a feeling of inadequacy. Concentration decreases, which causes stress. Prolonged stress hinders thinking and memory,' says Jääskeläinen.
The neuroscientist also sees social media as a challenge.
'Social media is really nothing but multitasking, with several parallel plots and issues. You might end up reading the news or playing a game recommended by a friend. From the brain's perspective, social media only increases the load.'