Mike Lehr's Blog

Glass Half Full? Half Empty?

One of my favorite metaphors to use as a “challenging assumptions exercise” is the “Is your glass half full or half empty” one. The basic assumption is that the choice is one of attitude: if your attitude is positive you will choose “half full,” if negative “half empty.” One of the reasons why I like it is that it can create quite a stir in folks when they see the answer is not quite so clear cut. This is important because viewing problems from an alternate perspective can trigger negative emotional responses that retard problem solving.

For instance, we can disrupt this popular metaphor by asking: Who is more likely to go out and get more water? The answer is the one who views his glass half empty. As we saw with bonus plans, the fear of loss is much more powerful than the joy of gain. Therefore, those who feel that they’ve already lost half their water supply are more likely to secure more water than those who feel they still have half remaining.

I experienced a real life example of this when I was taking a new national sales manager around to the troops. We visited the office of a sales representative who was out. The manager looked around and pointed to a picture of the representative’s four children and wife and said, “I love to see that. It means he’ll be real hungry to sell and support his family.”

This is also why crises are the most effective ways to encourage change. Consequently, if you were a water salesperson, you would be more likely to make a sale if you could get the customer to see his glass as half empty rather than half full.