Placebo buttons are buttons that actually do nothing except give the user an illusion of control.
The advent of computer-controlled traffic signals make the walk buttons at pedestrian crossings on heavily trafficked streets obsolete. By the late 1980s, most (but not all) walk buttons in New York City have been deactivated yet people push them anyhow, either in ignorance, out of habit, or in the off chance the buttons did work.
Many large office buildings also have dummy thermostats to give office workers the illusion of control. Some even go as far as installing white-noise generators to mimic the hum of fans after the HVAC system is shut off.
The same goes for the close button in elevators. Most elevators built or installed since the early 1990s don't have close buttons that work, unless you have a fireman's key. People do push them anyhow, because the fact that the door eventually closes reinforces their belief that the button works.
I don't have a thermostat that I can access at work, but I'd believe that one - I've called maintenance guys to fix the temp in my office so many times and they always assure me it's 21C.. even though my fingernails are turning blue!
There's the answer to your question.
Funny.
AND, our elevator buttons work fine too....
I guess the bottom line is: push the button and hope. It takes a whole one second and might save you quite a while at a stoplight.
Is it really a mystery why people push buttons? It isn't really a placebo effect. If a button is present, it's entirely reasonable to assume that it does what it says it will do, even if it's effect is difficult to casually quantify.
It is very reassuring.
As for the elevator buttons, I'd guess that the "open door" button is a dummy, too. It never seems to work ;)
If it doesn't do anything, why is the button there?
On a more srs note, in some parts of Portland, I've noticed that the walk sign won't appear when traffic stops unless I press the button by the cross walk. I always thought that was kind of unnecessary.
The last time I was in the States, the non-functioning button drove me nuts - how easily our ideas of normalcy can change....
A more interesting question is why do people repeatedly press the buttons at traffic lights, or press it when they can see somebody else already has? Surely if the button works, pressing it once should set it into motion. It's not like pressing it repeatedly is going to make it work faster.
I still want to see a two level elevator with one button labelled "The Other One".
Most buttons I've seen actually do work.
So you come to a crossing and there's no cars going except the ones that are turning, but the little man is red. You press the button and he stays red. The lights change and the cars pass in front of you. Then when the lights change again (so it's the same situation as when you got to the crossing) the little man turns green.
Nothing to do with fooling staff into thinking the AC is on.
always work in fire mode (oh, Look! A
comment box where you can type off the
side!), and that's why they're there, in
fact as other posters note, they do often
actually work, though not necessarily
immediately.
A client is an elevator company, and tells
me that it is programmable whether Close
will work in non-Fire mode. But they
don't "pay to put them in as placebos".
My favorite corollary story, though, is
about the elevator company who were asked
to rephase the elevator bank in a very
tall building in New York -- I think this
story comes from Don Norman's Psychology
of Everyday Things (which I refuse to
call by the much less cool title his
publisher forced on him for the paperback).
Users were complaining that the elevators
took too long to show up in the lobby to
take them upstairs.
Their prescription, after doing an analysis
visit? Put big mirrors in the lobby, so
people can check their look before heading
upstairs. That way, people will be
*occupied* while waiting, and won't
notice.
Worked like a champ.
I didn't know they were placebo! Why would they put them there if there was no point? That's annoying.
But they won't do anything that causes other traffic lights to go out of sync.
In my area, nearly all of the buttons work. If nobody pushes the buttons, the traffic lights continue to work, but there is never an opportunity for someone to cross the street. There is always traffic... whether straight-through traffic or turning traffic... passing through the crosswalk.
In fact, I have seen many people who, like fools, do not push the button, then act frustrated when they can't cross forever.
Not truly understanding how the button works (no, it is not an instant button to change the traffic signal that moment) leads some to believe they do nothing. However, there is never a clear understanding.
I cannot walk up to a crosswalk and KNOW whether the button does anything useful, whether it has been deactivated, how that particular button will function. Some will almost appear to begin changing the signal immediately... others take their time.
Without consistency and without an interface to show whether the button is activated or deactivated, the user is only left with pure speculation and assumption. So, if there is a possibility it might be functioning, I'm going to press it. If I know for sure that it absolutely does not work and is not needed, I won't press it. It's that simple.
It isn't about a bunch of troglodytes pushing disabled buttons because they have been programmed to do so. It's about the lack of proper communication. If a button has truly been disabled, it should be removed. If it still exists, it must be because it still works.
Sometimes the sensors which detect the presence of a car do not work properly. So, in the middle of the night, when there are NO CARS on the road (except for mine), I could sit at a red light forever (quite literally). Sure, I could back up and drive forward and try all sorts of tricks with my car. But, quite often, the most effective method is to just get out of the car and push the appropriate crosswalk button which will immediately start the process which will lead to my light turning green. By the time I am back in my car and buckled up, I've got the green light.
How can he possibly resist the diabolical urge to push the button that could erase his very existence?
Will his tortured mind give in to it's uncontrollable desires?
Can he withstand the temptation to push the button, that even now, beckons him ever closer?
Will he succumb to the maddening urge to eradicate history, at the mere push of a single button?
The beautiful shiny button.
The jolly candy-like button.
Will he hold out, folks?
Can he hold out?
As well, most close door buttons in elevators do work here.
But people who stand there and press it constantly! What gives?! Don't they realize it wont change the light faster?!
Also, thermostats in most newer buildings do work - to a point: they are generally restricted to 72 to 76 degrees as the entire building system is computer-controlled.
I can vouch for the close-door button. I spoke to an elevator tech. during routine maintenance. He informed me that the button does work when the system is not in "rush mode".
highly populated areas have deactivated those buttons but for other areas they still work.
Thermosats in office, I agree most of them are dummy controllers.
Also my experience has been than crosswalk buttons must be pressed for the walk sign to come on, except in places like Seattle and NYC.
It's not a dumb idea to press the button to find out if it works. If it doesn't work, then you won't bother pressing it again, will you?
However, downtown most of the lights are constantly in "walk mode" (including the wonderful "Denver shuffle" - http://www.urbandictionary.com/define.php?term=denver%20shuffle ), so in this part of town there are no buttons to push.
Some of the newest traffic signals around town in fact have an audible indicator (a sort of "thunk" sound) and a red light that comes on in the middle of the walk button when it's been activated, so if you're approaching an intersection to cross, you don't have to wonder or go pressing the button 15 times just in case.
As for people who press P-T-W buttons consistently, I like to equate the number of times a person presses a P-T-W button is directly proportionate to their impatience and therefore their unintelligence. No way does pressing it more than once help. I see youngsters yelling at the street light: Come onnn! Reflection on video gaming?