Psychology says people who check their travel bag several times may be seeking reassurance through repetition

Packing for a trip can turn even the most organized person into a checker. The passport is in the bag, but you look again. The charger is packed, yet you unzip the suitcase to make sure. You may check the same pocket several times before leaving home, even though nothing has changed. Psychology suggests that this behavior is not always about having a poor memory. For some people, repeated checking can serve as a way of managing uncertainty and obtaining reassurance. The important psychological question may not be “Did I pack everything?” but “Can I feel completely certain that I packed everything?” Research on intolerance of uncertainty, safety-seeking behavior and memory confidence helps explain why one check can sometimes turn into two, three or five.

Psychology Says Uncertainty Can Make Rechecking Feel Necessary

One of the strongest frameworks for understanding this behavior is intolerance of uncertainty, a concept developed by researchers including Michel Dugas, Mark Freeston and colleagues.

Intolerance of uncertainty describes individual differences in how people respond to situations in which the outcome is not completely predictable. Research has linked it to worry and anxiety, while newer reviews describe it as a broader, transdiagnostic psychological construct rather than something limited to one disorder. Travel naturally contains uncertainty.


A person may think, “What if I forgot my passport?” or “What if I need my medication?” or “What if my phone charger isn't there?”



Checking the bag creates a brief feeling of certainty. For example, someone may open the front pocket, see the passport and close the bag. A few minutes later, the thought returns: Did I actually see it?

The person checks again. The goal is reassurance, not necessarily information.

Psychology Says Checking Can Become a Safety Behavior

Psychologist Paul Salkovskis has written extensively about safety-seeking behaviors in cognitive models of anxiety. His work describes how people may perform behaviors designed to prevent a feared outcome or reduce the perceived threat associated with it. Checking a suitcase can work in exactly this way.

The feared outcome might be relatively ordinary: missing a flight because of a forgotten document, arriving at a hotel without essential medication or discovering that an important item was left at home.

The person checks because checking seems to reduce the possibility of that outcome. And initially, it works. They feel relieved. That relief can teach the brain that checking is useful whenever uncertainty appears.

Reassurance Can Create a Repetition Loop

This is where the behavior becomes psychologically interesting. Suppose a traveler checks their passport and immediately feels calmer. The brain may learn an association between uncertainty - checking - temporary relief. The next time uncertainty appears, checking becomes an obvious response.

This does not mean the person has a disorder. Ordinary checking before a trip is sensible. The issue is whether the behavior becomes excessive, distressing or difficult to stop.

Salkovskis' cognitive account suggests that safety behaviors can become connected to perceptions of threat and may maintain anxiety by preventing people from learning that the feared outcome would not necessarily occur.

Psychology Says Repeated Checking Can Actually Reduce Memory Confidence

Perhaps the most counterintuitive finding is that repeated checking does not necessarily make people more confident in their memory.

A 2023 systematic review and meta-analysis covering 29 studies and 67 substudies found that repeated checking substantially reduced memory confidence, while having a much smaller effect on memory accuracy. That creates an ironic cycle.


Someone checks the suitcase because they do not trust their memory. After checking repeatedly, they may become even less certain about what they remember checking.

“I know I looked at the passport, but did I look at it this time or the previous time?”

Research by Radomsky and colleagues similarly found that repeated checking can produce memory distrust and reduce the vividness and detail of memories, despite memory accuracy remaining relatively intact. So more checking does not always produce more certainty. Sometimes, it produces more doubt.

Prospective Memory Can Make Travel Checking Feel Especially Important

Travel also relies heavily on prospective memory, which is the ability to remember to perform an intended action in the future.

You need to remember to bring your passport, charge your phone, take your boarding pass and perhaps complete a check-in task.

Research on checking behavior has specifically examined the relationship between checking, prospective memory and executive functions.

This helps explain why checking can feel rational before an important journey. The consequences of forgetting something may seem significant, so the person repeatedly verifies that everything is ready.

A traveler who normally checks their bag once might check it three times before an international flight because the perceived responsibility is much higher.

Psychology Says Repetition Can Feel Like Control

There is also a perceived control component. Travel involves many things a person cannot control: traffic, delays, weather, security lines and airline schedules. Packing is one area they can control.

Checking the bag can therefore create a small psychological sense of mastery. The person cannot guarantee that the flight will leave on time, but they can make sure the passport is in the correct pocket. That distinction can make repetitive preparation feel comforting.

The behavior is therefore not necessarily irrational. It may begin as a sensible strategy for reducing practical risk and become repetitive when emotional reassurance starts becoming more important than the actual need to verify the bag.

Not Everyone Who Checks a Bag Repeatedly Has Anxiety

It is important not to overinterpret this behavior. Checking a travel bag twice before leaving for an important trip is normal. Forgetting a passport can have serious consequences, so verification can be useful.

Psychology becomes more relevant when checking feels impossible to resist, consumes substantial time or provides only fleeting relief before the doubt immediately returns.

Repeated checking alone cannot diagnose obsessive-compulsive disorder (OCD) or an anxiety disorder. The same behavior can have very different meanings depending on the person's circumstances and overall functioning.

Psychology Says the Real Goal May Be Certainty, Not the Suitcase

Repeated travel-bag checking may reveal something interesting about the psychology of reassurance. The person may not simply be asking, “Is everything packed?”

They may be asking, “Can I be absolutely certain that nothing has gone wrong?” And absolute certainty is rarely available.

That is why one check can sometimes become another. The first check answers the practical question, but the second may be answering an emotional one.

For many travelers, a quick final check is simply good preparation. But when checking repeatedly becomes the only way to feel calm, psychology suggests that the deeper issue may be less about what is inside the suitcase and more about how comfortable a person feels with uncertainty itself.

FAQs

Can checking something repeatedly make you less confident in your memory?

Research suggests it can. A 2023 meta-analysis found that repeated checking had a substantial negative effect on memory confidence, while its effect on actual memory accuracy was considerably smaller.

Does repeatedly checking a suitcase mean someone has OCD?

No. Rechecking a suitcase before travel is common and can be sensible. OCD involves a much broader pattern of obsessions and/or compulsions that cause significant distress or impairment; one repetitive behavior is not enough to establish a diagnosis.