A family joke goes around the table. The same joke that has gone around the table at this gathering for thirty-five years. Everyone laughs. Everyone has always laughed. This time the grandmother at the head of the table does not. She does not push back, does not say anything, does not appear to be in a bad mood. She just does not laugh. The room registers it briefly and moves on. Later, in the car home, somebody says she has been a little harder to please lately.

There is a cultural script for this. The script says she is getting older, getting harder, that the world is narrowing around her, that the family is going to have to start being more careful with her. The script reads the non-laugh as something happening to her. The research on emotional regulation across the lifespan suggests the script has the direction wrong. The non-laugh is not something happening to her. It is something that has stopped happening. For thirty-five years she was laughing on purpose. The laughing was the work.

The Stanford psychologist James Gross has spent three decades studying what that kind of laughing costs. The technical term for it is expressive suppression, which Gross and his colleagues, in a 2022 review, defined as “the inhibition of emotion-expressive behavior.” In plain English: looking composed while feeling something different inside. The work is real. The energy required is finite. In a foundational 1999 study with Jane Richards in Personality and Social Psychology Bulletin, Gross showed that people who use suppression have measurably worse memory for the events that happen while they are doing it, and elevated physiological arousal at the same time. Subsequent work has found similar costs in social outcomes: less closeness, less social support, worse close relationships, accumulated across years.

What the laughing was

The thirty-year-old version of this person was not, as far as she could tell, suppressing anything. She was just being polite. Her son-in-law’s joke landed wrong; she laughed anyway. Her daughter spoke to her on the phone the way her daughter spoke to her on the phone; she let it pass. The family booked the holiday without consulting her; she absorbed it and made the trip. None of these were big enough to fight about. Each one would have cost more to address than to overlook. The math was reasonable at the time.

The math is also cumulative. The accommodating that costs a small amount each time, repeated several thousand times across four decades, is not a small amount. The resources required to keep the suppression running do not refill on a schedule. They are finite. By the seventies they have, on the available evidence, been spent.

We write about research here, not from a therapist’s chair. The patterns described below appear across studies of population averages; they are not a diagnosis of anyone’s mother or grandfather, or an instruction for how a family should respond to them. The research can tell us that something happens across a lot of older people at once. It cannot tell us what is happening at your specific Sunday dinner.

Why it looks like crankiness

From outside, the shift is easy to misread. The mother who, at seventy-three, mentions for the first time that she actually does not enjoy the Mother’s Day brunch the family has been organizing for two decades is read as having gotten harder. From her position, she has been telling the truth about the brunch for the first time in twenty years. The new behavior is not new dissatisfaction. It is old dissatisfaction that the strategy of hiding it has finally stopped covering.

Two things have shifted at the same time. The cognitive cost of continuing the suppression has caught up with her, in the way Gross’s work describes. And her sense of time has shifted in the way the Stanford psychologist Laura Carstensen has documented across four decades of research on socioemotional aging. The thirty-year-old was, in a real sense, investing. She had reasons to keep the social fictions running because she expected to be inside those relationships for many more decades. The seventy-three-year-old is not making the same investment. The calculation has changed. This is not crankiness. It is honesty arriving late.

What the family is reading and missing

The behaviors she is now responding to are not new. They have, in most cases, been going on the whole time. The interrupted sentence. The dismissive comment. The assumption about what she wanted for dinner. The plans booked without consultation. The pattern of being treated as a person whose opinion was not going to change the outcome. Forty years of these landed without comment. The comment, now, is being heard as the start of something. From her side it is the end of something.

None of this means the older person is right to say what she is saying now, or that the family is wrong to find the change uncomfortable. Both are responding to something real. What the research suggests is that the change in her, the part the family is reading as decline, is more often a piece of accuracy arriving after a long stretch of approximation. Whether to read it that way is rarely obvious from outside the relationship. It usually only becomes obvious when somebody asks her, not what is wrong now, but what was wrong for the last forty years that she never quite said.