Multitasking with independent goals
Multitasking with independent goals will result in poor quality and quantity of work output. Considering the abode example you are sitting in the seminar hall and listening to the scholar’s speech and watching out the presentation slides. During the session if you start playing games in your iPhone, you are distracted or out of focus speaker’s speech as well as topic of discussion.
You would not be able to understand the topic of discussion completely in this case. This is because your multitasking activities are not unified or not inclined towards a same goal.
Improving Efficiency by avoiding multitasking
Switching back and forth between activities of varying complexity has become both a workplace and household habits nowadays. But this has some negative impacts on human with increased anxiety, physical exhaustion and depression.