If Some is Good, Does That Mean More is Better?
There is a concept in economics called diminishing marginal utility. This means that as a person increases consumption of a product there is a decline in the satisfaction or benefit that person gains from consuming each additional unit of the item. Applying this concept to eating may be one of the most useful things you will learn from this entire blog.
We have all had the experience of robotically eating something simply because it is in our line of sight and within arm’s reach. We may have a real desire for a piece or two of whatever it is, but if there is more than that available we are liable to continue eating far more than what it would take to satisfy that desire. Being mindfully aware of the enjoyment or pleasure that we are experiencing from that food is a critical element in preventing overeating.
The best way to illustrate this process is with what I’ll call the Food-Pleasure Curve, illustrated below. Think of each point on the curve as a unit of some food that you like but also recognize is an indulgence and can sometimes be a problem for you to resist. Let’s say it’s Hershey’s Kisses, which are about 25 calories each, and there’s a candy dish in front of you with eight individually wrapped candies in it. Seeing those makes you think about the taste and feel of what one would be like in your mouth, and that creates a desire for it, so you take one from the bowl.
You unwrap it, pop it in your mouth and experience exactly what you imagined. The taste is very satisfying, it brings back memories of eating them when you were young and you get a fair amount of enjoyment from it. If you would rate it from 1 to 10 on a scale of chocolate pleasure, it would perhaps score a 7. That’s great! That’s what I would call an excellent return on a small investment. You’ve achieved a high degree of anticipated pleasure for a cost of only 25 calories. In fact, you’re so pleased with the outcome of the experience that you decide to have a second one.
You go through the same process and your pleasure from this one goes up from a 7 to, let’s say, a 9. After all, you’ve already experienced it once, which took you from 0 to 7. Now you just want to add to that experience so it’s likely to bring it up a just a few points. Now you’re at 50 calories and at 9 out of 10 on the pleasure scale, which is still what I would call a nice return. You know that your pleasure is not going to go any higher than a 9, but the experience was enjoyable and there are still six more pieces in the candy dish. You’re not quite ready to walk away from it so you eat one more to prolong the experience.
At this point you’ve had three candies and you’ve already maxed out at 9 on the pleasure scale, but you want just one more as a way of letting go and putting it aside. So you have one more for the road. Although it doesn’t increase your enjoyment, it also does nothing to diminish it, so the curve stays flat.
The bowl still has a handful of chocolates in it, though, and they’re still right there within easy reach; but you feel that you’ve already satisfied your initial desire to experience what you anticipated when you first saw the candies, and you’ve consumed 100 calories, so you decide to stop.
You distract yourself for a few minutes; you walk around a bit, and maybe do a little work. But on some level you’re still thinking about the chocolates in that dish. You finally convince yourself that you’re just going to have one more. So you eat it, but immediately feel a twinge of regret.
Now here is the important part: that small feeling of regret just cancelled out some of the pleasure you had initially experienced. This is where the marginal utility begins to diminish. It’s true that the fifth one tasted exactly the same as the first, which you fully enjoyed; however, you’ve already satisfied that initial desire, and in terms of your emotional state, you were kind of disappointed in yourself for not controlling that impulse to have more.
At this point, however, you also feel that you’ve already lost this round in your bout with self-control, and you think, why keep fighting it? So you have another, and adding that one to how you’re already feeling about yourself, you say “Oh, what the hell!” and, abandoning all restraint, you have the last few in the bowl. Now, in addition to the emotional letdown, you begin to feel a little physically disgusted. Your sense of self-loathing and weakness, to say nothing of queasiness, wipes out any enjoyment you got out of the first few chocolates. To add insult to injury, you’ve just taken in an extra 200 calories and have nothing to show for it.
We have all had this experience, even those who do not consider themselves emotional eaters. It’s not a sign of a disorder; it’s a sign of being human. The question is, what can you learn from it?
The part of this that is very human is our natural and mostly adaptive tendency to tune out our routine behaviors which allows us to focus on other, more complex mental processes. That’s what allows us to multitask; when we do that we’re really focusing on only one thing at a time, but we can accomplish other more routine tasks at the same time because they don’t require the same degree of cognitive effort.
The problem is that this “efficiency” comes at a cost. The lack of attention leads to errors, not because we’re using poor judgment, but because we’re not applying judgment at all! The process I described with the Hershey’s Kisses is actually an exaggerated version of reality. It’s typically not the way we consciously process the decisions we make, but it reflects what happens on the level just below conscious awareness.
The way to change this is to be mindfully aware of the following thoughts: your desire for something to eat, whether the item you are considering will satisfy that desire, how much it would take to do so, and at what point do you reach the maximum level of satisfaction that you’re likely to get without doing anything to diminish the pleasure you got out of it. Keeping the Food-Pleasure Curve in mind as a mental image can be very helpful in accomplishing that goal.
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