ohmidog!

 
A new study confirms the notion that self-control is a limited resource, one that can and does get depleted — in humans and dogs.

And glucose, the study says, is one solution to helping us — whatever our species — stay on task, Miller-McCune magazine reports on its health blog.

The University of Kentucky study, which appears in the latest issue of the journal Psychological Science, says the same mechanism that regulates human self-control also operates in canines.

A research team led by psychologist Holly Miller conducted two experiments with canines, observing how much persistence they exhibited when given a task.

In the first, 13 dogs were separated into pairs based on their training history. One from each pair was cued to sit and stay by its owner for 10 minutes, with the command being repeated as necessary. The other was simply kept in a quiet room for that same amount of time.

Afterward, each dog was given a Tug-a-Jug toy, a clear cylinder containing treats that can be accessed via a hole at one end — if the dog manipulates it properly. Each toy contained half a hot dog, too large to fit through the hole.

The dogs that had exercised self-control by sitting in place for 10 minutes gave up and discarded the toy more quickly than the others.

In a second experiment, 22 dogs repeated the first experiment with an additional component: Half the dogs were given a glucose drink prior to grappling with the toy, and half were given a sugar-free beverage.

“Dogs given a glucose drink persisted in interacting with the toy whether or not they had had to exert self-control prior to the test,” the researchers report, adding the glucose apparently replenished the animal’s capacity to keep at the task.

Previous research has shown glucose has a similar effect on humans.

“People can control their own behavior,” Miller said. “When they fail, it is not because they are terrible or weak; it is because they are depleted … If they want better self-control, they can build it. They can encourage their bodies to store more self-control fuel via exercise.”