Everything We Know About Human Bathroom Behavior
By Clint Rainey in the Science of Us
The anthropologist Horace
Miner once wrote about
the Nacirema, a strange North American people he said all perform the exact
same set of rituals in communal “shrine rooms,” but pretend to be doing it in
almost total secret.
He of course was making fun of
Americans in public bathrooms, and the common practices that go on inside that
are actually pretty weird when you think about them. Why, for example, is
talking generally frowned upon? Why do those two-roll dispensers in stalls
always run out at the same time? Why do guys spit in urinals?
To shed light on these mysteries,
Science of Us combed through mountains of research on bathroom behavior and
uncovered some revealing findings, from the most popular kinds of wall
graffiti, to the gender dynamics of pee-formance anxiety, to important insights
on the great under-over toilet-paper debate. Consider it the perfect reading
material for when nature calls.
HOW PEOPLE CHOOSE THEIR STALL OR
URINAL
If presented with three empty
stalls, men:
- Go left 28 percent of the time.
- Go straight ahead 40 percent of the time.
- Go to the right 32 percent of the time.
Presented with that same trio,
women:
- Go left 34 percent of the time.
- Go straight ahead 29 percent of the time.
- Go to the right 37 percent of the time.
But when the left stall is occupied,
men:
- Now head to the far right 73 percent of the time
Women, under the same circumstance:
- Also move the far right 65 percent of the time
Given a line of identical options,
people “reliably prefer the middle one.” The problem is stalls or urinals in
a line are rarely truly identical, and men tend to opt for whatever’s closest
to the door, while women gravitate to those farther from it.
HOW PEOPLE PEE
Men treat other men like objects. According to Erving Goffman’s seminal 1963 Behavior
in Public Places, running into a friend in the bathroom often causes buddies
to pay each other civil inattention — “enough visual notice to
demonstrate that one appreciates that the other is present ... while at the
next moment withdrawing one’s attention from him so as to express that he does
not constitute a target of special curiosity or design” — but running into them
at the urinal dictates nonperson treatment, or pretending your friend’s
part of the surroundings, an object “not worthy of a glance.” (Goffman said
that talking is permitted as long as it’s done like you’re addressing the wall
or no one in particular.)
Men also must abide by tons of
unwritten rules. One academic codified the etiquette this way:
“Do not stand directly next to another man at another urinal.” “Do not look at
another user during urination, and, if possible, keep conversation to an
absolute minimum.” “If you shake it more than twice, you’re playing with it.”
Men get pee-formance anxiety; women,
not so much. There are two social phobias men
have at a much higher rate than women: returning something to the store, and peeing in a public bathroom. And the closer men are to another person, the longer it
takes them to get the flow going: In one study,
the authors monitored a row of three urinals and clocked an average of 4.9
seconds if the subject was all alone, 6.2 if there was a one-urinal buffer, and
8.4 at close range.
A bull’s-eye can help reduce
splatter. Putting a fly decal on the urinal can reduce spillage by as much as 80 percent.
Territorial men like to spit into
the urinal before peeing. “It’s a
way to appear stronger and mark your space,” says Boise
State sociologist Robert McCarl. “Males are more concerned about turf than
women are. You get a group of males together, and there is a lot of posturing
going on.”
Women are more likely to duck into the men’s room than vice versa. But
only because their lines are longer.
HOW PEOPLE BEHAVE IN BATHROOM STALLS
Stalls become a temporary hideout. According to a classic paper about
bathroom rituals, bathroomgoers “may lay claim to any unoccupied stall in the
bathroom,” but “once such a claim is laid, once the door to the stall is
closed, it is transformed into the occupying individual’s private,
albeit temporary, retreat.” Talking across stalls is a definite no-no — unless
you’re female, in which case, according to these authors, it acts as a confessional in a sacred place.
Nobody likes an audience while
defecating. In the above study, researchers
never managed to observe a person pooping in an unenclosed toilet (but in some
parts of the world, women don't have much choice).
On average, women spend twice as
long as men do on the toilet.
That’s according to toilet expert Chuck Gerba; another study found women outlast men by an
average of 61.5 seconds.
But women really don’t like sitting
on the toilet. Only 2 percent of women say they sit directly on the toilet seat in
public restrooms; 85 percent hover, or “crouch,” as
the paper put it.
People like to do some business
while they’re doing their business. Seventy-five
percent of people use their phones in the bathroom; 63 percent have answered a
call, 41 percent have initiated a call, and 10 percent have “made an online purchase.”
As a result, as many as one in six cell phones might be contaminated by poo.
Which calls to mind a related factoid: that 8 percent of people also admit they’ve eaten in the bathroom.
They do it differently in Europe. Stall architecture varies from culture to culture, according to Cornell architecture professor
Alexander Kira: European water closets are fully
enclosed, while the standard design for American stalls is two five-foot walls
and a door that start a foot from the ground.
THE MANY — WELL, NOT THAT MANY —
SUBJECTS OF BATHROOM GRAFFITI
It’s mostly raunchy, at least in
men’s rooms. Alfred Kinsey found
that 86 percent of inscriptions in men’s bathrooms were erotic in nature,
compared to just 25 percent in women’s bathrooms. A later study showed that
the sexual revolution hadn’t made women’s graffiti any smuttier. The bulk of
what’s in men’s bathrooms (75 percent) is also homosexual in nature. In
addition, men compose graffiti that’s more likely to proposition readers, more
likely to be a stand-alone doodle, and more likely to contain the artist’s
initials. Females compose graffiti that’s more romantic, more interactive, but
also way more likely to insult rivals. And when they do write insulting
graffiti, they focus on physical
appearance and infidelity.
There’s a virtuous side to bathroom
graffiti, too, though. Sometimes
the scribbling serves a nobler purpose, says one study: soliciting advice, encouraging and
consoling others, and calling male dominance into question.
HOW PEOPLE USE TOILET PAPER
Women use way more TP than men. They use an average of seven toilet-paper squares per visit,
and men use two, according to Chuck
Gerba.
Folders outnumber crumplers. Nearly twice as many people fold toilet paper than crumple it, although being young, spending longer in the bathroom, and
having two X chromosomes all increase your likelihood of crumpling.
Over-hangers outnumber under-hangers. Cottonelle famously found
that 72% hang the toilet paper roll so the free end comes down over the top,
while 28% hang it so it dangles from the bottom. In another study,
68% of respondents preferred TP to hang over, while 32% preferred
bottom-hanging. Also, high-earners ($50,000-plus, in 1989 dollars) preferred
over (60%), while 73% of people making less than $20,000 preferred under.
(Asked what this means, one author said, “I don’t know, but it’s sure
interesting.”)
With two-roll dispensers — the
industry standard — both rolls often go empty at about the same time. That’s because, according to one mathematician, humanity is divided just about evenly between what he
calls big-choosers and little-choosers. Big-choosers always take
toilet paper from the larger roll; little-choosers always do the opposite.
BATHROOM CLEANLINESS — AND HOW
PEOPLE COPE WITH ITS ABSENCE
There’s a real (and real gross)
catch-22 to hand-washing. Using the
soap from dispensers is a terrible idea, since a quarter of them are so laden
with fecal and coliform bacteria that your hands could end up filthier than
before you washed them. A British public-radio exposƩ
on drug use found traces of cocaine on 92 percent of baby-changing stations.
And cleanliness is important, but not that important: Twenty-nine percent of
respondents to one survey
said they’d never go back to a restaurant with unsanitary bathrooms, and the
percentage of never-returns increases with age. Twenty percent of 18- to
34-year-olds, but 33 percent of people 35 and older.
When it comes to bathrooms,
people define unclean in many different ways. And not necessarily by the amount
of filth: Eighty-four percent say a bathroom is gross if a dispenser is out of
toilet paper, and 76 percent will go there if the soap is empty. In 2012,
Beijing passed a two-fly rule
for public toilets: Any more than two per fixture, city officials advised, is
unacceptable.
HAND-WASHING AND HYGIENE
Signs reminding people to wash work
for women, but not men. At least
according to one study
in which the percentage of females who washed their hands jumped from 61% to
97% as a result of signage, while signs were associated in a drop among
men, from 37% to 35%.
Everyone lies about hand-washing. Men and women alike overstate how often they wash their hands, though according to one survey, only 56 percent of us even
bother claiming to wash every time. Another study discovered that a mere 32
percent of food-handlers wash their hands, even though it’s required.
And when people do wash their hands,
they aren't very good at it.
Only 5 percent of people do it thoroughly enough to kill germs, though this varies by location: 97 in 100 people at Toronto International Airport washed
after using the bathroom, while at JFK, it was 63 in 100.
But, being germ freaks, people at
least minimize hand use in the bathroom.
According to a survey
by a bathroom fixtures company, 64 percent of Americans flush public toilets
with their feet, 60 percent open the door handle with toilet paper, 48 percent
shut the door with their butt, and 39 percent use elbows whenever possible to
avoid hand contact.
Paper towels are actually the most
hygienic option for drying hands.
Research shows an unfortunate side effect of hand dryers is that they blast bacteria everywhere. In one experiment,
bacteria counts in the air were 27 times higher near hand dryers than they were
by paper-towel dispensers, and high-powered jet dryers made things four and a
half times worse than normal dryers.
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