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Traditional schooling isn鈥檛 working for an awful lot of students. We can respond to that fact either by trying to fix the system (so it meets kids鈥� needs better) or by trying to fix the kids (so they鈥檙e more compliant and successful at whatever they鈥檙e told to do). The current enthusiasm for teaching self-discipline and persistence represents a vote for the second option.

The more effort we devote to getting students to pay 鈥渁ttention to a teacher rather than daydreaming鈥� and persist 鈥渙n long-term assignments despite boredom and frustration鈥� (in the words of 鈥済rit鈥� proponent ), the less likely we are to ask whether those assignments are actually worth doing, or to rethink an arrangement where teachers mostly talk and students mostly listen.

Underlying self-discipline and grit is the idea of deferring gratification鈥攆or example, by putting off doing what you enjoy until you finish your 鈥渨ork.鈥� The appeal to many educators of transforming kids from lazy grasshoppers to hardworking ants explains the fresh wave of interest in a series of experiments conducted back in the 1960s known as the marshmallow studies.

By now you鈥檝e probably heard the summary: , preschool-age children were left alone in a room after having been told they could get a small treat (a marshmallow or pretzel) by ringing a bell at any time to summon the experimenter. But if they held out until he returned on his own, they could have a bigger treat (two marshmallows or pretzels). The outcome, as it鈥檚 usually represented, is that the children who were able to wait for an extra treat scored better on measures of cognitive and social skills many years later and had higher SAT scores. Thus, if we teach kids to put off the payoff as long as possible, they鈥檒l be more successful.

But that simplistic conclusion misrepresents, in several ways, what the research actually found.

1. What mostly interested Mischel wasn鈥檛 whether children could wait for a bigger treat鈥攚hich, by the way, most of them could. It wasn鈥檛 even whether those who waited fared better in life than those who didn鈥檛. Rather, the central question was how children go about trying to wait and which strategies help. It turned out that kids waited longer when they were distracted by a toy. What worked best wasn鈥檛 (in Mischel鈥檚 words) 鈥渟elf-denial and grim determination,鈥� but doing something enjoyable while waiting so that self-control wasn鈥檛 needed at all.

Mischel and his colleagues systematically varied the details of the situation to see if this affected children鈥檚 willingness to wait. These changes included telling them about (versus showing them) the marshmallow, encouraging them to think about its shape (versus its taste), and suggesting a distraction strategy (versus having kids come up with their own). Sure enough, such factors were more important for predicting the outcome than any trait the child possessed. This, of course, is precisely the opposite of the usual message that (a) self-control is a matter of individual character, which (b) we ought to help children develop.

2. Even to the extent that Mischel looked at characteristics of individual children in addition to situational details, when the children were tracked down 10 years later, those who had been more likely to wait didn鈥檛 have any more self-control or willpower than the others.

This makes sense because Mischel鈥檚 primary focus was on strategies for how to think about (or stop thinking about) something attractive, and how those strategies may be related to other skills down the line. Those later outcomes weren鈥檛 associated with the ability to defer gratification, per se, but only with the ability to distract oneself when distractions weren鈥檛 provided by the experimenters. What鈥檚 more, the ability to invent a distraction turned out to be correlated with plain old intelligence鈥攁 very interesting finding because other writers (like Duckworth) have argued that intelligence and self-discipline are totally different things and that we should train children to acquire the latter.

It shouldn鈥檛 be surprising that the kids鈥� capacity to figure out a way to think about something other than the food was associated with their SAT scores. It鈥檚 not that willpower makes certain kids successful; it鈥檚 that the same loose cluster of mental proficiencies that helped them with distraction when they were young also helped them score well on a test of reasoning when they were older. (In fact, when the researchers held those scores constant, most of the other long-term benefits associated with their marshmallow-related behavior disappeared.)

3. Almost everyone who cites these experiments assumes that it鈥檚 better to wait for two marshmallows鈥攖hat is, to defer gratification. But is that always true? 鈥淚n a given situation,鈥� he and his colleagues wrote, 鈥減ostponing gratification may or may not be a wise or adaptive choice.鈥� Sometimes a marshmallow in the hand is better than two in the bush. It鈥檚 true, for example, that if you spend too much of your money when you鈥檙e young, you may regret it when you鈥檙e old. But how much should you deprive yourself鈥攁nd perhaps your children鈥攊n order to accumulate savings for retirement?

Moreover, while some tasks favor waiting, others favor taking what you can right now. published in the journal Social Psychological and Personality Science in 2012, researchers fiddled with the algorithm that determined how points were earned in a simulation game and then tracked the interaction between that change and the players鈥� personalities. 鈥淚mpulsivity,鈥� they concluded, 鈥渋s not a purely maladaptive trait, but one whose consequences hinge on the structure of the decisionmaking environment.鈥�

And here鈥檚 another twist: The inclination to wait depends on one鈥檚 experiences. 鈥淔or a child accustomed to stolen possessions and broken promises, the only guaranteed treats are the ones you have already swallowed,鈥� remarked a group of social scientists at the University of Rochester. In 2012, they conducted an experiment in which children were encouraged to wait for a new set of exciting art supplies rather than using the well-worn crayons and dinky little stickers that were already available. After a few minutes, the adult returned. Half the kids received the promised, far-superior materials. But the other half got only an apology: 鈥淚鈥檓 sorry, but I made a mistake. We don鈥檛 have any other art supplies after all.鈥�

Then it was time for the marshmallow challenge. And how long did the children wait for two to appear before they gave up and ate the one sitting in front of them? Well, it depended on what had happened earlier. Those for whom the adult had proved unreliable (by failing to deliver the promised art supplies) waited only about three minutes. But those who had learned that good things do come to those who wait were willing to hold off, on average, for a remarkable 12 minutes.

Thus, the decision about whether to defer gratification may tell us what the child has already learned about whether waiting is likely to be worth it. If her experience is that it isn鈥檛, then taking whatever is available at the moment is a perfectly reasonable choice. Notice that this finding also challenges the conclusion that the capacity to defer gratification produces various later-life benefits. Self-restraint can be seen as a result of earlier experiences, not an explanation for how well one fares later.

The Rochester study clarifies what may have been going on in Mischel鈥檚 original experiments, where there was no effort to learn about the children鈥檚 lives before they walked into his lab. But even on its own, Mischel鈥檚 work doesn鈥檛 support the case for willpower and self-denial that traditionalists have tried to make. Waiting for a bigger treat doesn鈥檛 always make sense. And even when it does, the question is, 鈥淲hat changes in the environment can facilitate that choice such that self-discipline becomes less important?鈥�

Perhaps the broader message for educators is this: Focus less on 鈥渇ixing the kids鈥� and more on improving what and how they鈥檙e taught.