Planning to lose weight? Stay away from temptations
Washington: A new study suggests that avoiding temptation may increase your chances of success if you are planning to lose weight or save for the future, than just relying on willpower alone.
The researchers compared the effectiveness of willpower versus voluntarily restricting access to temptations, called ‘precommitment’.
Examples of precommitment include avoiding purchasing unhealthy food and putting money in savings accounts with hefty withdrawal fees.
They also examined the mechanisms in the brain that play a role in precommitment to better understand why it is so effective.
Molly Crockett, who undertook the research while at the University of Cambridge and is currently a Sir Henry Wellcome Postdoctoral Fellow at UCL, said, “Our research suggests that the most effective way to beat temptations is to avoid facing them in the first place.”
For the study, the researchers recruited healthy male volunteers and gave them a series of choices: they had to decide between a tempting “small reward” available immediately, or a “large reward” available after a delay. Small rewards were mildly enjoyable erotic pictures and large rewards were extremely enjoyable erotic pictures.
Since erotic pictures are immediately rewarding at the time of viewing, the researchers were able to probe the mechanisms of self-control as they unfolded in real-time. (The scientists could not use money, for example, since subjects could only reap the rewards of money once they left the lab.)
For some of the choices, the small reward was continuously available, and subjects had to exert willpower to resist choosing it until the large reward became available. But for other choices, subjects were given the opportunity to precommit: before the tempting option became available, they had the ability to prevent themselves from ever encountering the temptation.
The scientists measured people’s choices and brain activity as they made these decisions. They found that precommitment was a more effective self-control strategy than willpower – subjects were more likely to get the large reward when they had the opportunity to precommit. They also found that the most impulsive people (those with the weakest willpower) benefited the most from precommitment.
The scientists were also able to identify the regions of the brain that play a role in willpower and precommitment. They found that precommitment specifically activates the frontopolar cortex, a region that is involved in thinking about the future.
The study is published in the journal Neuron.