Why Night You Can't Predict Morning You: The Empathy Gap

In 1998, Daniel Read and Barbara van Leeuwen asked office workers to pick a snack they would receive a week later, either fruit or something less healthy. Some were asked late in the afternoon, hungry. Others were asked right after lunch. The hungry group chose more of the unhealthy snack, even though the snack was seven days away and their hunger would be long gone. That result is the core of the hot-cold empathy gap: whatever you feel right now leaks into your forecast of a future self who feels something else.

What is the hot-cold empathy gap?

George Loewenstein laid out the idea in a 1996 paper, “Out of control: Visceral influences on behavior,” in Organizational Behavior and Human Decision Processes. It rests on two premises. First, visceral factors you are feeling now (hunger, thirst, pain, craving, strong moods) have an outsized effect on behavior and crowd out other goals. Second, people underweigh, or ignore, visceral states they will feel later, felt earlier, or that other people are feeling.

“Hot” means gripped by such a state. “Cold” means not. The gap is the trouble each version of you has picturing the other. A person who is full cannot quite believe in hunger. A person who is hungry cannot quite believe in being full.

What is projection bias?

George Loewenstein, Ted O’Donoghue and Matthew Rabin gave the forecasting half of this a formal model in “Projection bias in predicting future utility” (Quarterly Journal of Economics, 2003). Their summary: people underappreciate how their own behavior and outside factors change their future utility, so they overstate how closely their future preferences will resemble their current ones. The paper argues this helps explain patterns such as addiction and the endowment effect.

Projection bias does not say you know nothing about tomorrow. It says your guess is anchored on now. Adjustments happen, but they come up short.

What did the snack study add?

Read and van Leeuwen’s design separated two things. When the choice was for a week away, hunger at the moment of choosing still tilted people toward the indulgent snack. That is projection: the hungry chooser treated future appetite as if it were current appetite. They also found people were dynamically inconsistent. Asked to pick for right now, participants took far more unhealthy snacks than when picking in advance. So a cold, distant choice is better than a hot, immediate one, but a choice made while hot is still contaminated.

What does this have to do with a 5:30 a.m. alarm?

Nobody has studied alarm clocks this way, as far as I know, so what follows is an application of the theory, not a finding. It is a fairly direct one.

Picture the state you are in at 10:45 p.m. on a decent evening. You have just finished something, your calendar for tomorrow is in your head, and the resolve to be a person who gets up early feels like a stable fact about you. From that state you set 5:30. The forecast you are making is about the morning, but the data you are using is the evening’s mood.

Morning-you is in a different state entirely. You are warm, you are short on sleep, and sleep inertia (the grogginess covered in this explainer on what it is and how long it lasts) is making the first minutes feel like a bad time to think. The tomorrow-you that night-you pictured was rested, purposeful and keen. The tomorrow-you who shows up has a long list of reasons to stay put.

Here is the same gap as a short exchange. This is an invented illustration, not a transcript of anyone.

Night-you, 10:45 p.m.: 5:30 is fine. I’ll want to do this.

Morning-you, 5:30 a.m.: I never said that. Whoever said that isn’t here.

The line that stings is the second one, because it is the gap running in reverse. Loewenstein’s second premise includes states you have felt in the past. At 5:30 the resolve of the previous evening is a fact you know about but do not feel, so it carries almost no weight.

Why do we keep making the same mistake?

Two features of the setup make it hard to learn from. First, the two states almost never overlap. Night-you and morning-you never share a room, so night-you never gets direct evidence of how the plan lands. Second, the errors point in a flattering direction. It is more pleasant to picture a keen future self than a groggy one, and a projection bias fills in the pleasant version by default.

There is also an asymmetry in who pays. Night-you feels the small satisfaction of having a plan. Morning-you bears the cost of carrying it out. When the person choosing and the person paying are the same body but different states, the chooser has little reason to price things honestly.

What follows for how you set the alarm?

If the problem is that the choosing self is in the wrong state to judge, the fix is to change who or what does the judging. A few practical consequences follow from the research, though none of them has been tested as an alarm intervention.

1. Set the time by a rule, not by mood. Something like “weekdays, 6:15, unless a calendar entry says otherwise” takes tonight’s energy out of the calculation. A time picked because you feel ambitious tonight is exactly the forecast the theory says will be biased.
2. Decide the consequence for ignoring it at the same moment. Loewenstein’s account predicts that the hot, immediate choice will overrule the cold one, so the cold choice needs to be binding before the hot state arrives.
3. Treat any lights-out revision as a proposal. If you want to move the alarm later after you are in bed, write it down and look at it tomorrow evening in a cooler state. The person who wants the change is in the state least qualified to approve it, and this is precisely why the Ulysses strategy, binding yourself in advance, keeps showing up in writing about self-control.
4. Do the cold-state work for the morning, all of it, the night before. Clothes, the first task, the glass of water. Every choice left to 5:30 is a choice made by the hottest, most biased version of you.

Note what this list does not say. It does not say morning-you is weak or that night-you is wise. Night-you is simply the one who is far from the bed, and is better placed to make a rule. Each version is competent about its own state and poor at guessing the other’s.

Where does an app fit?

DontSnooze applies point 2 mechanically. You decide at night that the alarm will demand a 30-second video and that a missed one sends a random camera-roll photo to friends you chose (how that works). By 5:30 a.m. the price of ignoring it is already set, and morning-you has nothing left to bargain over. What the app does not do is make morning-you want to be up. The empathy gap is about wanting, and a fixed consequence leaves that untouched. It only stops the wanting from being the deciding vote.

What the research does not settle

The evidence base here is snacks, drugs, pain and shopping, not sleep. Projection bias has support in several settings, but nobody should quote a number for how much of a missed 5:30 alarm it explains. Night-you also does hold real information that morning-you lacks, such as the meeting at 8:00. The safest reading is modest: your evening forecast of your morning self is likely too generous, so build the plan for the person who will actually be there.

Read and van Leeuwen’s workers were only ever asked about snacks. The rest of us are asked about mornings, every night, by the least qualified person available.

Stretch the same misjudgment across ten years and you get the end-of-history illusion, laid out in this look at a famous concert-ticket experiment.