Sustained attention: eyes scan a long passage but nothing is understood — you have to go back. Films longer than two hours feel heavy, the urge to check the phone keeps rising. Meetings beyond 30 minutes turn into a fight with yourself. Careless errors on familiar tasks: a skipped line when copying, an obvious typo not noticed.

Selective attention: working in a café or open-plan office becomes impossible — any noise breaks concentration. In a noisy place, neighbors are heard better than the actual conversation partner. Ads and notifications cannot be ignored — the eyes are pulled toward them. Reading on public transport stops working.

Switching: after switching from one task to another, it takes a long time to «enter» the second one. Returning to work after a phone call, the next 10 minutes are spent «collecting thoughts». Two parallel chats become unmanageable — answers get mixed up.

Not to be confused with ADHD or overload: ADHD shows the same pattern from childhood; information overload improves after a vacation and sleep; true decline is stable, independent of context.

The main marker: the thread is lost during a brief distraction. You walk from one room to another for a specific item and forget why at the doorway. You open the fridge and forget what you wanted. You start a sentence, get interrupted by a call, and cannot recall what you were saying. This is the «doorway effect»: it happens to everyone occasionally, but with reduced working memory it occurs several times a day.

Multi-step instructions become hard: «bring the red folder from the car and the blue book from the living-room table» becomes «bring from the car… what was it?». People ask the same thing several times — especially numbers, names, addresses. Sticky notes everywhere because nothing stays in the head. The thread is lost in conversations with long sentences. Half the shopping list is forgotten unless written down.

At work: tasks holding several parameters at once suffer — spreadsheets, mental math, coordinating details. «Lost variable» errors appear — a known factor was simply not accounted for. Multitasking becomes nearly impossible.

Home test: repeat 7 digits after one presentation — normal for an adult; under 5 — noticeable decline. The same digits in reverse — pure working memory; norm is around 5–6.

Decline here is often masked as «character» or «temperament». Signs: impulsive purchases, especially online and when tired. The «blurt out the first thing that comes to mind» reaction in conversations. Hard to hold back a comment when silence is needed. Snapping at loved ones over trivia, regretted later. Inability to put the phone down — the hand reaches automatically. Overeating with food at hand, especially sweets. Procrastination is also an inhibitory failure: the impulsive choice of an easy reward over productive work.

The emotional layer: the limbic system «breaks through» weakened control. Evening irritability (even without fatigue), mood swings, reactions to provocation stronger than the person considers reasonable. In the morning, after good sleep, the same person reacts adequately — which shows it is a matter of control resources, not character.

Link to stress and sleep: inhibitory control is the most «expensive» function and falls first when resources are depleted. A chronically sleep-deprived or stressed person looks more impulsive than they actually are.

This is the brain's «clock speed», and it declines with age earlier than other functions — usually a slow drop starts after 30. The signs are often dismissed as «that's just who I am».

In daily life: a conversation with a fast speaker becomes tiring — you fall half a second behind and lose the punchlines. In group conversations there is no time to insert a remark — by the time it is formulated, the topic has moved on. Decisions in shops, restaurants, on the road take longer and feel stressful. Reactions in sports, games, and behind the wheel are noticeably worse than before. Reading at conversational speed (interpreting, foreign-language subtitles) becomes hard.

At work: the same task takes longer than for colleagues with the same experience. A need to double-check everything appears — not from insecurity, but because the brain «didn't catch up» the first time. Deadlines that used to feel comfortable now feel pressing.

Behind the wheel: slower reactions to changing conditions, especially at speed. Harder to merge in dense traffic. This is one of the early markers of cognitive decline in older adults — relatives often notice the deterioration in driving first.

These are the brain's «conductor» — the ability to set goals, plan steps, track progress, adjust the plan. Decline shows on a larger scale — days and weeks rather than minutes.

Hard to start a complex task — not from laziness, but because it cannot be broken into steps. Postponing decisions that require comparing several options. «Sticking» with one plan even when it is clearly not working. Difficulty prioritizing — everything feels equally important. Disorganization: the workspace, home, and schedule become chaotic where they used to be orderly. Financial slips: missed bill payments, lost receipts, unmonitored subscriptions.

In older adults, executive decline often shows as losing the ability to cook a complex dish — not because the recipe is forgotten, but because coordinating several processes at once no longer works. This is one of the earliest everyday markers of cognitive decline that family members notice.

Decline of long-term memory is what people fear most, but it is often not the first function to suffer. Most «memory complaints» in adults are actually complaints about working memory or attention (you cannot remember what you did not attend to in the first place).

True markers: it is not «details of a conversation a week ago» that are forgotten, but the very fact that a conversation took place. Repeated questions over a short time — asked, answered, then asked again 20 minutes later with no recollection of having asked. Forgetting the names of people who are seen regularly. Disorientation in familiar places — getting lost in a neighborhood lived in for 20 years. These are serious signals that warrant medical evaluation.

Less alarming but noticeable: word-finding difficulty — «on the tip of the tongue», especially with proper names and rare words. This is normal with age and is called the tip-of-the-tongue phenomenon. Burke et al. (1991) showed its frequency rises with age, but it is not a precursor to dementia — it is normal age-related slowing of retrieval.

The key distinction: forgetting where you put the keys is working memory and attention. Forgetting that you ever picked up the keys is long-term memory.

Markers: difficulty parking, especially parallel parking. Getting lost in unfamiliar buildings, malls, the metro — building a mental map is hard. Cannot assemble furniture from picture instructions. Cannot picture how a room rearrangement will look before doing it. Does not understand maps and relies entirely on turn-by-turn navigation.

In older adults: an early marker of Alzheimer-type dementia — getting lost in a familiar neighborhood, unable to find the car in a parking lot. This appears earlier than overt memory failures.