How video games are good for the brain

In this article, the author demonstrates kairos by taking advantage of the recent presidential election and the controversy that preceded and followed it.
For example, the very first paragraph mentions that President Obama counseled American schoolchildren to put away their video games. It then goes on to say that science knows more than the president on this subject. This causes several things to happen in the minds of the audience:

The first thing the reader reads is about the president, which will catch the attention of both his supporters and those who do not support him. The reader sets up his mind to either mentally defend his political view against Obama or to agree with whatever he says.

This mention of the president serves a double purpose. If the reader is in favor of the president, then he will begin reading the article because he wants to know the president’s views, but may end up disagreeing with his views on video games by the end of the article because it is meant to be persuasive and is against his views. If the reader is against the president, then he might begin reading for the soul purpose of disagreeing with Obama, and then be more inclined to agree with the author because the author also disagrees.

The author used political timing (kairos) to capture a reader’s attention and persuade people from both sides of the presidential debate.