Multitasking is doing more than one thing at the same time. 
Sister columnist in the Catholic Times focuses our attention on this 
very common experience in our lives. She mentions hearing the sound of a
 radio in the class room below, and goes down to the room. A 
teacher is preparing his lesson plans with a book open, listening to the 
radio. Out of curiosity she asked him: Are you able to listen to the 
radio while working on your paper? He  told her that while he was 
absorbed in the book he doesn't hear the radio, and when he is listening 
to the radio he is not reading. She then asked why does he have the 
radio turned on? When there is no sound he feels something missing. Some
 feel when they are doing more than one thing at a time, they have a 
feeling of completeness.
Many, both children and 
adults, listen to music while they read or work, and we have those who 
watch TV while reading. Common to see someone drinking tea, listening to
 music and reading. By doing this they feel they are more efficient, one
 will stay with the reading longer. But are they really more efficient? 
Authorities
 tell us that it is difficult for the brain to be involved in two 
activities at the same time. The brain is strained and is fatigued. What
 is really happening  is we are switching very rapidly from one task 
to another. Step by step and continuously we are going from one task to
 another, and we are under the illusion we are doing it all at the same 
time.
The brain she says is like a remote control 
device that switches from one thing to another. When the mind is 
enjoying stimulation from the outside, and you are reading a book your 
full attention is not on reading.
There is music that 
can help you to be absorbed in your reading and block out the noise, 
chatter, and other distractions and give one a quiet refuge to attend to 
the reading. But once you become habituated to this way of reading you 
will find it difficult to stop. Our brains are influenced by our 
emotions and affects the chemistry of the brain: the way we become
 addicted to drugs. We can become dependent on feeling to move us to 
action.
She uses the words of a philosopher to 
show that we are moving from the contemplative and meditative  to a more feeling and amusement orientated direction in our lives. We are 
more interested in the stimulation that comes from the outside.
She
 concludes her article with the well known incident in the life of 
Augustine where he was moved deeply by seeing Ambrose reading without 
moving his lip. Now, "as he read, his eyes glanced over the pages and his heart searched out the sense, but his voice and tongue were silent.
 Often when we came to his room—for no one was forbidden to enter, nor 
was it his custom that the arrival of visitors should be announced to 
him—we would see him thus reading to himself. After we had sat for a 
long time in silence—for who would dare interrupt one so intent?" 
We who find it difficult to give our attention to what we are doing should  take these words of St. Augustine about St. Ambrose, and make them 
our attitude when we approach our reading.