BrainStuff Classics: Do Crosswalk and "Close Door" Buttons Really Do Anything?

you are the brief master of your own fate. All the forces humankind have harnessed have come to bow under your fingertip. But does pressing buttons always have the promised effect? Do close door buttons and elevators and pushed to cross buttons at crosswalks actually do anything? Well? Physically speaking, the answer is not always Psychologically the jury is out, so

let's tackle the physical section first. As of two thousand four, a representative from the Department of Transportation in New York City said that more than seventy of their crosswalk buttons had no effect on their traffic signals, and as in the UK, transportation officials reported that an unknown number of crosswalk signals function automatically regardless of whether anyone presses the button.

The estimates that they could give regarding non functional buttons ranged from eight percent to but why many crosswalk buttons are relics of a time before signal patterns were controlled by computer systems to help streamline traffic. Removing the buttons, especially in large cities like New York, could cost millions, so the folks in charge have generally chosen to leave

them standing. In newer traffic control systems, for example, the split cycle offset optimization technique, some people just like to call it scoot well. For example, municipalities can program buttons to turn on only some of the time. Now, think of an intersection with lots of motor traffic twenty four hours a day, but pedestrian traffic mostly during business hours during the day, when walk signals will likely be useful.

During every signal cycle, the buttons don't work. The walk signal comes automatically at night, when fewer people are on foot, you have to press the button to stop traffic and cross the street. Meanwhile, reports on the functionality of elevator closed door buttons vary by the source. The urban myth that they're usually fake or that they're only operable with the use of a key by emergency or repair personnel.

Seems to stem from the Americans with Disabilities Act of it's current accessibility guidelines specified that elevator doors must remain open for at least three seconds. In practice, this law may well render closed door buttons useless to the particularly impatient of us. But there's no reason to think that they're all, or even mostly, placebo buttons. Yet. You heard me write placebo buttons. This is the psychology term for buttons that are designed to not do anything. They're named

after the placebo effect. In brief, the placebo effect is a confirmed phenomenon in which people experience measurable clinical results with fake treatments due to the apparent power of their belief in the treatment. In the world of buttons, placebos have been installed on purpose in some workplaces in the

form of fake thermostats. According to an informal survey conducted by the online publication Air Conditioning, Heating and Refrigeration News that Sounds Extremely Interesting, a majority of h VAC professionals have installed placebo thermostats during their careers, or fifty one out of seventy respondents at any rate. It seems that managers sometimes hope that employees who would otherwise waste time complaining about the temperature will be placated by pressing a button,

even if it doesn't change anything. After all, even the illusion of control can make us happier. Today's episode was produced by Tyler Clang and written by Me in the way Back for Brainstuff's YouTube series. If you like our show and also like t shirts, check out our merch store at t public dot com slash brain stuff. For more on this and lots of other topics that probably aren't playing a psychological trick on you. Visit our home planet, how stuff works dot com.