Summary
Too many appealing options can lead to excess purchases or leaving empty-handed. This article explores decision fatigue, competing explanations for it, and ways to organize choices around your goals and need for rest.
At a glance
If you are tired after a day of work, temporarily postponing a major decision may be wiser than forcing it. The article links decision fatigue to abundant options and repeated choices, while presenting competing explanations involving self-control resources and motivation; the glucose mechanism remains disputed. It recommends narrowing options, organizing decisions around the task, and following your own rest patterns rather than a universal evening cutoff.
Should You Avoid Making Decisions at Night? How Decision Fatigue Develops
“Don't make decisions at night.” You have probably heard this advice before, perhaps from someone speaking from experience. But what might explain it scientifically? Start by asking yourself whether any of these situations sound familiar.
You get up early, determined to put together the perfect outfit. You try one combination after another, growing increasingly indecisive until it is nearly time to leave. Finally, you grab an ordinary sweatshirt or T-shirt and rush out, thinking, “I have nothing to wear. I need to buy more clothes.”
At a restaurant, everything on the menu looks tempting, and leaving out any dish feels disappointing. You end up ordering far too much, then wince at what the meal has done to your wallet.
Before bed, you enthusiastically decide to plan a productive tomorrow. But how much time should each task take, and what should come first? You get so tangled up in the details that you abandon the plan and leave it until tomorrow. These experiences share a pattern: you begin full of enthusiasm and finish mentally exhausted. Despite having plenty of options, you feel as though you have no choice at all. This is decision fatigue.
What Is Decision Fatigue?
As the name suggests, decision fatigue is the tiredness people experience while making decisions. In psychological research, it has been described as a symptom or manifestation of ego depletion.
The theoretical background begins with Freud's division of the mind into the ego, the conscious self; the id, which seeks pleasure; and the superego, the moral self. He proposed that the ego needs some form of energy to mediate between the demands of the id and the superego. The source account identifies Baumeister as a Canadian psychologist and credits him with drawing on this theory to develop the concept of ego depletion: willpower is finite, and we continually use it up. Sustaining focused attention on a task, for example, draws on that willpower. In this account, depletion brings a greater risk of diminished cognitive ability, weaker psychological control, and irrational behavior.
When Does Decision Fatigue Occur?
Two common situations in everyday life can lead to decision fatigue.
1. Having Too Many Options
It is easy to assume that more choice is always better, but an abundance of options can produce decision fatigue and make irrational choices much more likely. Imagine going into a shop for a single packet of snacks. The shelves are packed with all your favorite junk foods, and every packet looks delicious. Before you know it, you have bought far more than you intended—and can already picture your mother's reaction when you get home.
The same abundance can also have the opposite effect. When choosing becomes discouraging, seemingly endless options can leave people dissatisfied. Again, you enter the shop intending to buy one packet of snacks, find shelves full of your favorites, and think everything looks delicious. This time, though, you cannot decide what to buy, so you leave with nothing.
Some retailers exploit this tendency by enthusiastically presenting a large assortment of products. Once customers are overwhelmed by choice, they may be much more likely to spend irrationally. But retailers should be careful: pushing this mechanism too far can backfire, frustrating customers and discouraging purchases. Quite a sales lesson—provided it does not drive the customer away.
2. Making Similar Decisions Repeatedly
Some occupations require people to make similar, task-related decisions over and over each day, creating another route to decision fatigue. Consider the Israeli parole example cited here: a parole board regularly reviews prisoners, with a presiding judge interviewing each prisoner before deciding whether to grant parole. The reported approval rate was 70% for morning interviews but only 10% in the afternoon. The account attributes this difference to interview timing rather than the offense or the prisoner's moral conduct during imprisonment. Its explanation is that repeated decisions leave the judge fatigued and more inclined toward the easier outcome: refusing parole. Granting parole carries risk, whereas refusing it reduces the judge's professional exposure.
Doctors face similarly repetitive decisions as they see large numbers of patients. For people with chronic illnesses, the judgment about whether to operate can have substantial consequences for treatment outcomes and life afterward, making accuracy especially important. The cited research reports that, during a doctor's shift, the last patient was 33% less likely to be scheduled for surgery than the first.
One explanation for such differences is a change in how people decide. When they are not tired, and the range and difficulty of the options are limited, they are more likely to refine their decision-making approach so that the outcome serves their goals and leaves them satisfied. Under decision fatigue, however, they may move away from demanding cognitive reasoning and toward heuristics: shortcuts that rely on simple rules drawn from experience.
As choices become more complex, people also become more inclined to use elimination strategies. When you cannot decide which clothes to buy, for instance, you might filter the options as follows: 1. Select items within a particular price range. 2. Choose a color family that usually works well for you. 3. …
Why Does Decision Fatigue Happen?
One U.S. study cited here puts the average number of decisions an adult makes each day at 35,000. That sounds astonishing, but many choices pass unnoticed—even now, you might be deciding whether to keep reading this article. With so many decisions to make, periods of fatigue are hardly surprising. Researchers have spent decades exploring what lies behind them.
1. The Ego-Depletion Model
Baumeister argues that willpower allows us to resist temptation in everyday life—in other words, to exercise self-control. The ego-depletion model describes several ways in which that process may wear us down.
Resource consumption. Making choices uses willpower resources that would otherwise be available for self-control. In this model, the resulting decline in self-control makes it easier to give up or choose irrationally.
Emotional regulation. Ego depletion can also change how we feel. Those emotional shifts prompt the self-regulatory system to adjust our behavior toward avoidance: if a problem seems impossible to solve, we abandon it halfway through; if we cannot settle on a decision, we stop trying to make one.
Physiological factors. The physiological explanation presented here proposes that self-control consumes substantial amounts of glucose. It holds that self-regulation is more likely to fail when blood glucose is low and cannot be effectively mobilized to the brain, a condition the account associates with low insulin. Research cited in support reports that restoring adequate glucose levels usually improves self-control when people are tired. The medical example follows a related pattern: the likelihood of scheduling surgery for patients with chronic illnesses declines from early morning until just before lunch, returns to a high level after doctors eat lunch, and then declines again as time passes.
The glucose explanation remains disputed, however. Skeptics argue that the brain's overall energy use stays the same regardless of what a person is doing, which conflicts with the idea that exhausting an energy supply weakens willpower. One skeptic is Todd, a collaborator of Baumeister's. Although he accepts the existence of ego depletion, he questions how changes in glucose alone could produce the proposed neural process.
Beyond the disputed glucose mechanism, experimental findings have also been offered in support of the ego-depletion model. In sequential-task experiments, participants are divided into a comparison group and a depletion group. The comparison group initially does either no task or one expected to cause little depletion, while the depletion group completes a task expected to cause substantial depletion. Everyone then performs the same subsequent task, allowing researchers to compare their performance. The reported results show more errors or poorer self-control in the depletion group, with some participants even wanting to quit.
2. The Motivational-Change Model
Some researchers interpret sequential-task findings differently. Rather than showing that self-control resources have run out, the results may reflect diminished rational control or greater self-indulgence. On this account, feeling depleted may arise from a shift in motivation: the desire to exercise self-control weakens, while the desire to indulge grows stronger. Reasoned decisions require motivation to maintain self-control. As that motivation shifts, continued restraint feels tiring, indulgence becomes more appealing, and irrational choices become more likely.
Self-control can therefore be understood as a contest between two forces. One is impulse: the pull of pleasures, temptations, and the rewards we anticipate after being disciplined—the things we feel we want to do. The other is deliberate control: the effort required to stay focused on a goal and do what we feel we have to do. Maintaining self-discipline involves an ongoing negotiation between these competing forces.
Weight management offers a familiar example. Craving tempting, high-calorie food is the impulse that threatens the plan. Pushing through an intense workout with Liu Genghong, grimacing with effort, demonstrates the self-control needed to follow it. So does resisting temptation while friends beside you eat fried chicken and drink cola.
When the promise that effort will bring a reward is what motivates self-discipline, people often relax their self-control once the effort is over. They may feel that they have earned a payoff, as though discipline owes them a reward. This helps explain why many people respond to dieting with rebound overeating. In the motivational-change model, then, ego depletion arises from shifts in attention and motivation. These shifts can impair attention and strengthen impulses, reducing a person's ability to recognize internal conflicts or compare differences.
This brings us back to the advice about avoiding decisions at night. After a day of work, most people are physically and mentally tired, eager to rest, and less able to force themselves to concentrate. They may also favor simpler methods, such as elimination, to reach a decision quickly and free themselves to pursue pleasure or relaxation. Heuristics save time, but they can leave relevant considerations unexplored. A major decision made in this tired evening state may therefore be unwise.
How Can You Manage Decision Fatigue?
1. Narrow Your Options
When you cannot choose, you could playfully declare, “Choosing is for kids—I'll take everything!” and sweep the distractions aside. Clarifying what you want the decision to achieve, excluding distractions, and narrowing the range of options can help reduce the fatigue involved in choosing.
2. Organize Decisions Around the Nature of the Task
Simplifying the thinking involved in a decision and organizing plans in an orderly way can also ease decision fatigue. For managers, systematic, institutionalized procedures are especially valuable because they establish in advance how decisions will be made.
Individuals can benefit from a personal system too. One approach is to plan and complete tasks using four quadrants, ordered by urgency and importance as follows: 1. Urgent and important. 2. Urgent but unimportant. 3. Not urgent but important. 4. Neither urgent nor important.
3. Choose Your Decision Times Carefully
Learn when your body needs rest. If a major choice arrives at a point in the day when you need a break, rest first. Many of us dislike procrastination, and the thought of putting things off can make us anxious. But when decision fatigue sets in, an unresolved question need not be another source of worry. Temporarily postponing the decision may be the wiser choice.
Frequently asked questions
Should everyone avoid decisions at night?
The article's advice concerns major decisions made when you are tired after daytime work. It recommends following your own rest patterns and resting first when needed; it does not establish a universal evening cutoff.
Can having too many options make choosing harder?
The article describes two possible outcomes: abundant options may encourage excessive purchasing, or they may make choosing so discouraging that a person buys nothing. Some retailers may exploit choice overload, but overusing it can also discourage purchases.
Does decision fatigue necessarily mean willpower resources have run out?
The article presents competing interpretations. The ego-depletion model proposes that choices consume self-control resources, while the motivational-change model emphasizes shifts toward indulgence and away from restraint. The glucose explanation remains disputed.
How can you manage decision fatigue?
The article recommends clarifying your goal and narrowing options, simplifying decisions through orderly systems suited to the task, and choosing decision times around your need for rest. Temporarily postponing a major choice may help when you are fatigued.
