The Principle of Least Interest
Sunday, 18 October 2009 00:00
The Principle of Least Interest.
In any relationship, the person who has the least interest has the greatest power.
Willard Waller
The “Principle of Least Interest” is an actual social work theory. It has been around since the late 1930's and was coined to describe power in relationships.
For example, if I am selling my house and the buyer desperately wants it, I have no need to bargain with my price. If I let the buyer know “I’m not interested in what you want, I may just walk away.” I’m in the driver’s seat. I can play them, even inventing another “interested buyer” to squeeze out a few more dollars.
When I first read the principle a thunderclap went off in my head. In one sentence it captured so much of what I see. I see it when a spouse is desperate to save a marriage and their counterpart isn’t interested. I see it especially in families desperate to correct the behavior of an adult child who had no interest in changing.
Pictures of former cases tumbled in my brain. I could hear the voices of parents pleading with their 20 year-old, or 30 year-old “child” to please stop drinking, please get a job, please stand on your own two feet, please. . . .


