Seven strangers were let into 83 bedrooms where the owner was not present. Nameplates, letters and photographs of the occupants were covered up. The only things the observers had to go on were the furniture, the orderliness, the light and the posters on the walls. Then they had to describe the personality of someone they had never met. The study was published in the Journal of Personality and Social Psychology in 2002 under the title “A Room with a Cue,” and it remains one of the most cited studies on how a room reveals its owner.
What is remarkable is not that the guesses were reasonably accurate. It is which guesses were accurate, and what kinds of objects carried the information. The walls turned out to be unusually talkative.
Quick facts: In Samuel Gosling’s study “A Room with a Cue” (Journal of Personality and Social Psychology, 2002), eight observers assessed 94 offices in banking, real estate, architecture, advertising and a business school, while seven observers assessed 83 bedrooms belonging to students and recent graduates. Openness to new experiences was the trait observers judged most accurately. For that trait, strangers assessing the bedrooms were at least as accurate as the participants’ own acquaintances.
Seven Observers, 83 Bedrooms and an Unexpected Winner
The setup was simple and unforgiving. The observers were not allowed to meet the person, hear their voice or see their face. They could enter the room, look around for a few minutes, and then rate the owner on the five personality dimensions psychologists typically work with: openness, conscientiousness, extraversion, agreeableness and emotional stability. Their ratings were then compared with how the person had described themselves and with how people close to them had described them.
Two things emerged. First, the observers were remarkably consistent with one another. Different strangers read the same room in roughly the same way, which means the rooms really did send a signal and were not just reflecting the observers’ imaginations. Second, their accuracy varied. Openness ranked highest, followed by conscientiousness and extraversion. Emotional stability and agreeableness were much harder to read from a room’s furnishings.
Bedrooms revealed more than offices. The explanation is easy to see: an office is a semi-public place, with norms, employer-provided furniture and colleagues’ eyes. A bedroom is negotiated with no one but yourself. The person is more clearly visible there, simply because fewer compromises have had to be made. In the bedrooms, there were also modest correlations between clutter and extraversion, and observers perceived bright, airy rooms as signs of emotional stability.
The last association is worth pausing over, because it’s about what the observers believed rather than what was actually true. Light and airiness functioned as a signal that viewers relied on, whether or not it held up. So walls don’t just tell the truth. They also speak in clichés that visitors are happy to listen to.
Identity claims and behavioral traces: two ways to read a wall
Gosling and his co-authors proposed two distinct ways personality makes its way into a room. One they called identity claims: deliberate choices to surround oneself with objects that say something about who one is. The other they called behavioral traces: the physical residues that arise when someone does the same thing over and over in the same place. The sink that’s always empty. The running shoes by the door. The pile of books growing on the bedside table.
The distinction is crucial for anyone thinking about the art on the wall. A coffee stain on a desk is a behavioral trace, unintentional and therefore difficult to fake. A poster is the opposite. It never ends up on the wall by itself. Someone chose the image, chose the format, chose the height, and chose for this particular thing to be the first thing the eye meets.
"A poster is almost never a behavioral trace. It’s a conscious statement about who you want to be – directed as much inward as outward."
Gosling also divided identity claims into two directions. Some are outward-facing and intended to communicate something to others. Others are inward-facing and intended to remind oneself. Often, they coincide. The classic example in the research literature is a poster of Martin Luther King: it affirms the owner’s own self-image while also telling the visitor what they stand for. The same image, two motives behind it.
Why openness is the trait the walls reveal most
The fact that openness topped the list is more surprising than it sounds. In studies where raters are shown short film clips or photographs of people, extraversion and agreeableness tend to be easiest to assess accurately, while openness and conscientiousness are difficult. In a room, the order is reversed. The reason is that openness is a trait that lives in objects rather than facial expressions. Curiosity about the unfamiliar, tolerance for ambiguity, and aesthetic sensitivity don’t show particularly well in a smile, but they show up immediately in a bookshelf with unusual titles, in an eclectic collection, and in motifs that aren’t obvious choices.
That’s why the gallery wall is the most revealing piece of furniture in a Swedish home. Someone who consistently chooses abstract posters and lets the viewer fill in the meaning signals something different from someone who chooses recognizable images with a clear story. Neither approach is better. They’re simply different, and that difference is readable to a stranger standing in your hallway for six minutes.
Later research has continued along the same lines. A study of older adults’ living rooms, where evaluators rated the interiors along the dimensions of novelty, pleasantness and comfort, found that openness was associated with novelty and pleasantness among those who lived alone. Extraversion was also associated with novelty and pleasantness, but not comfort, while conscientiousness was associated with novelty and comfort, but not pleasantness. So personality continues to show in a room long after the bedroom years of student life, but it takes on a different form.
Tip: Try the observer test in your own home. Stand in the doorway of the room you show off the most and give yourself thirty seconds. What three things would a stranger notice? If all three are furniture and none is an image you chose yourself, the room says more about the furniture trade than about you.
The wall you decorate for yourself, and the one you decorate for visitors
The distinction between inward- and outward-facing identity claims translates directly to a Swedish home layout. The hallway, living room and dining area are seen by others. The bedroom, reading nook and home office are seen almost exclusively by you. The fact that it was bedrooms, not offices, that revealed the most in the study is precisely how this works in practice: the fewer other people a space has to withstand, the more honest it becomes.
In practice, this means the two types of walls can handle different things. A wall that visitors see works well with images that are easy to understand at a glance and don’t need an explanation to work: photographic art with a clear statement, graphic designs with clean shapes, a well-known work by the great artists. A wall only you see, by contrast, can handle the unusual, the unfinished and the private. That’s where a truly personal collection usually finds its place.
The trap is letting the whole home become outward-facing. A home where every piece is chosen to work in company often comes across as impersonal, for the same reason that the offices in the study were harder to interpret: consensus erases the individual. If you want your home to feel like yours, at least one space should be chosen without a single thought about what visitors might think. We’ve written more about why that feeling arises in our overview of research on place attachment and the feeling of home.
Four decisions that make your wall more honest
The first decision is about being able to justify your choices. If you can’t say a single thing about why a piece is hanging where it is, there’s a good chance it’s a placeholder rather than a choice. The reason doesn’t have to be profound. “It reminds me of summers in Bohuslän” is more than enough.
The second is about variety. In the study, openness was interpreted partly through the number of different kinds of objects. A wall where every piece is chosen from the same series and color palette is visually calm, but says less. If you want the wall to say something about you, at least one piece should break the pattern—ideally one that no one else in your circle would have chosen.
The third is about letting private spaces stay private. The reading nook doesn’t need to hold up at a dinner party. The bedroom doesn’t need to match the living room. If you make every surface equally presentable, you lose the spaces that actually reflect you—which is the ironic conclusion of bedrooms beating offices.
The fourth is about depth over time. Behavioral traces emerge through repetition, and a collection built up over several years carries the same kind of credibility. A wall put together in one afternoon often looks exactly like that. Adding minimalist posters and more expressive pieces in stages creates a result that is harder to copy and easier to stand by. We’ve covered how to build such a collection step by step in our article on the viewer’s contribution to abstract art.
Frequently asked questions about what your walls reveal
The conclusion is liberating rather than uncomfortable. No one reads your walls with a judge’s eye, but they do read them, mainly for how curious and unconventional you seem. That’s a quality you don’t need to hide. Let a piece be your own choice rather than a compromise, and if you hang it in a room where you actually spend time, you’ll get even more out of it. Read more about the study in the APA summary or in the original publication.