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The hidden tricks of powerful persuasion

Believe it or not, people are often a lot easier to manipulate than you think.
By David Robson |


Most people would like to assume that they are free agents—their fate lies in their own hands. But they’d be wrong. Often, we are as helpless as a marionette, being jerked about by someone else’s subtle influence. Without even feeling the tug, we do their bidding—while believing that it was our idea all along.



“What we’re finding more and more in psychology is that lots of the decisions we make are influenced by things we are not aware of,” says Jay Olson at McGill University in Quebec, Canada—who recently created an ingenious experiment showing just how easily we are manipulated by the gentlest persuasion. The question is, can we learn to spot those tricks, and how can we use them to our own advantage?


As an undergraduate in psychology, Olson found the new understanding of the mind often chimed with the skills he had learnt with his hobby. “Lots of what they said about attention and memory were just what magicians had been saying in a different way,” he says.


Related: The contagious thought that could kill you

One card trick, in particular, captured his imagination as he set about his research. It involved flicking through a deck in front of an audience member, who is asked to pick a card randomly. Unknown to the volunteer, he already worked out which card they would choose, allowing him to reach into his pocket and pluck the exact card they had named—much to the astonishment of the crowd.



The secret, apparently, is to linger on your chosen card as you riffle through the deck. (In our conversation, Olson wouldn’t divulge how he engineers that to happen, but others claim that folding the card very slightly seems to cause it to stick in sight.) Those few extra milliseconds mean that it sticks in the mind, causing the volunteer to pick it when they are pushed for a choice.


When the people were asked why they chose that specific card, oddly enough, they were all so convinced they chose it of their own freewill.


The implications extend far beyond the magician’s stage, and should cause us to reconsider our perceptions of personal will. Despite a strong sense of freedom, our ability to make deliberate decisions may often be an illusion. “Having a free choice is just a feeling—it isn’t linked with the decision itself,” says Olson.




Subtle menu

Consider when you go to a restaurant for a meal. Olson says you are twice as likely to choose from the very top or very bottom of the menu—because those areas first attract your eye. “But if someone asks you why did you choose the salmon, you’ll say you were hungry for salmon,” says Olson. “You won’t say it was one of the first things I looked at on the menu.” In other words, we confabulate to explain our choice, despite the fact it had already been primed by the restaurant.


Related: Psychology: How many senses do we have?

In one striking result, simply seeing a photo of an athlete winning a race significantly boosted telephone sales reps’ performance—despite the fact that most people couldn’t even remember seeing the picture. And there is some evidence showing that handing someone a hot drink can make you seem like a “warmer” person, or smelling a nasty odor can make you more morally “disgusted” and cause you to judge people more harshly.




How to spot manipulation

Clearly, this kind of knowledge could be used for coercion in the wrong hands, so it’s worth knowing how to spot others trying to bend you to their will without you realizing.


Based on the scientific literature, here are four manipulative moves to watch out in your colleagues and friends in everyday life:



1. A touch can be powerful

Simply tapping someone on the shoulder, and looking them in the eye, means they are far more open to suggestion.

It’s a technique Olson uses during his trick, but it also has been shown to work in various everyday situations—such as persuading people to lend money.


2. The speed of speech matters

Olson says that magicians will often try to rush their volunteers so they choose the first thing that comes to mind—hopefully the idea that you planted there. But once they have made their choice, they switch to a more relaxed manner.

The volunteer will look back and think they had been free to make up their mind in their own time


3. Be aware of the field-of-view

By lingering on his chosen card, Olson made it more “salient” so it stuck in the volunteers’ minds without them even realizing it.

There are many ways that can done, from placing something at eye level, to moving something slightly closer to a target. For similar reasons, we often end up taking away the first thing offered to us.



4. Certain questions will plant ideas

For example, “Why do you think this would be a good idea?” or “What do you think the advantages would be?” It sounds obvious, but letting someone persuade themselves will mean they are more confident of their decision in the long term—as if it had been their idea all along.


We may all be puppets guided by subtle influences—but if you can start to recognize who’s pulling the strings, you can at least try to push back.


Related: The best way to win an argument

Copyright 2015 Entrepreneur Media, Inc. All rights reserved.
This article originally appeared on Minor edits have been done by the editor.

 Photos from Flickr (Z-Xpress and John Lavallee)

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