- What Is The Sound A Slot Machine Makes Called Money
- What Is The Sound A Slot Machine Makes Called Thunder
- What Is The Sound A Slot Machine Makes Called Better
- What Is The Sound A Slot Machine Makes Called One
First of all, these gambling devices weren’t always called slot machines. Slot machines were originally referred to as a one-armed bandit, then later in Great Britain as a fruit machine. A slot machine gambling device is activated by pulling a handle or pushing a button. Slot machines don’t become due for a win when they haven’t paid out in a long while, and they also don’t become hot and start paying out more. Every spin is like a single coin toss or a single roll of the dice—the outcome is independent of all the outcomes prior to it. The location of the slot machine.
A slot machine simply takes a dollar and gives 80-98 cents back (it's rare to find a slot machine with a payback of over 98%).
But, of course, it does this in the long run.
Since playing slot machines seems insane on paper, what makes slot players spend so much money on these machines that are often referred to as one-armed bandits?
That'll be all the psychological factors.
Slot Machines and Psychology
A machine that just takes money and does nothing else would unlikely succeed, so the way slot machines have worked around that hurdle is offering a theoretical chance to win money, even if you lose money on the machine in the long run.
And that chance makes people play the machines. First of all, who wouldn't want to win a lot of money for basically doing nothing? That's appealing even if the odds were against you.
Additionally, people rarely realize just how much of a house edge slot machines have, and how much better it would be to play games like blackjack with optimal strategy.
Usually, the bigger the jackpot, the more players are willing to play the machine. After all, what's $50 spent on a machine that may give you a life-changing sum of money? (Co-incidentally, progressive jackpot slots, the ones that have more than a million dollars in jackpot prizes, give you the worst winning odds.)
Our desire to win big-time allows slot machines to play another psychological trick on us: the near-miss situations, which happen because slot machine reels are weighted differently (more about that lower on this page). It encourages us to keep on playing since we 'came so close' to winning life-changing money.
At live casinos, the most popular slot machines are often placed in the places where most people can see them. This takes an advantage of a psychological tendency called Social Proof (or as I like to call it, 'monkey see, monkey do'). Some say that casinos even place the machines with the highest hit frequency to where everyone can see them - I find this believable, but I have no proof.
Seeing lots of others play and win is one heck of a psychological trick. The sound of winning that a slot machine makes is affiliated deep in our mind with something positive, as is the sound of coins clinging and clanging against the metal disposer of the machine (the sound of money!). It's easy to see why someone walking in to space like that would be hooked.
So I thought it would be important to understand how slot machines work from a psychological point-of-view first - since psychological factors are what make us play slot machines - and now that you understand the basics of slot machine psychology, let's move on to the technical aspects.
Random Numbers and Paytables
When someone believes in a slot machine's hot and cold streaks, it's called Gambler's Fallacy, and for a good reason. 'Hot' streaks happen, 'cold' streaks happen in the sense that sometimes, when numbers are chosen randomly, they happen to be of similar sort for X times in a row.
It's like receiving pocket aces twice in a row at poker - it's unlikely (in fact, there's a X% chance it happens) but it does happen sometimes. Does that mean the deck of cards is 'hot'? Or when you flip a coin and you get heads five times in a row, is the coin 'hot'?
Of course not. When things happen at random, they do. They're unpredictable. Anything can happen, and at some point probably will happen.
But the point is, you have no way of knowing what the future holds for a slot machine. Every spin of the reels is an independent trial, which means the previous game has no influence on the next game. Everything starts over and the chances of winning are the same with each spin of the reels, regardless of whether someone's lost ten spins in a row or just hit a jackpot.
Why would anyone design slot machines that get 'hot' or 'cold' anyway? If they did, players could tell when to play and when not to play. It makes no sense. Casinos are much better off creating slot machines to which there are no 'winning systems' available.
What Is The Sound A Slot Machine Makes Called Money
So slot machines use a random number generator (from now on referred to as 'RNG') to, well, generate random numbers for each reel. These numbers are between one and a couple of billions (let's just say a lot of numbers).
What Is The Sound A Slot Machine Makes Called Thunder
And there's a symbol assigned to each number - for example, if the RNG would pick numbers between one and a billion, the game had ten symbols and each were as likely to come, there would be a 100 million numbers assigned to each of the symbols.
But lot machine symbols are never equally likely to come; the ones that pay the most are the hardest to get. Therefore different symbols have a different amount of numbers assigned to them. (The odds of winning the Megabucks jackpot are somewhere in the one out of 50,000,000.)
But the point is, the RNG assigns numbers to each reel and those numbers correspond with symbols that have been assigned to them. The RNG is not influenced by previous results; it deals a new, random set of numbers with every spin, regardless of what's happened.
Interestingly, the moment you press Spin or pull the lever, your fate has already been sealed. Spinning reels stopping one by one is just theatrics; they make the game more exciting and enjoyable.
Now, the slot machine must also know which symbol combinations are winners and how much they pay. For this, slot machines use EPROM chips. They tell the slot machine winning combinations and define the paytable.
When a casino wants to change the payback of a machine, they change the EPROM chip (or the settings of the chip). Not long ago casinos had to physically change the chip which was quite a bit of work, but now many casinos can change the settings of the chip externally.
There are rules, though. In Nevada, for example, casinos aren't allowed to change the settings four minutes before and after someone has played; this eliminates the myth that casinos change the settings while you're playing.
What Is The Sound A Slot Machine Makes Called Better
So either someone physically changes the chip or there has to be a four minute time window before and after someone's played. (While the settings are being changed, the slot machine screen should have a message stating that some sort of 'configuration' is happening.)
What Is The Sound A Slot Machine Makes Called One
That's pretty much it. There are a lot of psychologal tricks involved, but technically the RNG assigns random numbers to each reel and the EPROM chip determines the winning combinations and paytables, which together determine the payback (or 'return') of the machine. The less it pays back, the more you're going to lose on the machine in the long run.
More About the Subject:
- Vegas Click: Michael Bluejay's comprehensive explanation of how slot machines work. In my opinion, the best one out there.
- Wizard of Odds: Michael Shackleford's slot machine advice -- the site also features an extensive FAQ section for slots.
- Gambling Captain: If you're looking for a short but insightful read on the basics of slots (or other casino games), this is a good site to visit.
I spent part of last week on vacation from science in Las Vegas, where I thankfully avoided financial ruin due to some fortunate combination of genes, math awareness and a wife that has no interest in gambling. Sure, I dabbled a bit in games of chance, but as soon as I got a little bit ahead on the blackjack tables I ran for my life, knowing that the probability would even out hard in the long run. For those concerned about the financial well-being of Sin City, they still managed to turn a profit on us, thanks to the low-return temptations of fine dining and French circus acts set to Beatles megamixes. But most of our time was spent on the free entertainment of people-watching and stuff-watching, observing row after row of people almost hypnotically at work on loud, noisy slot machines amid fake New York, Paris and Venice scenery.
It doesn’t take a PhD in neurobiology to conclude that slot machines are designed to lure people into a money-draining repetition, just as it doesn’t take expertise in the casino business to realize slots are absurdly profitable – there’s a reason why they outnumber table games 100-to-1. But I wanted to go back to the scientific literature to confirm a faint glimmer of information I retained from graduate school, specifically that slot machines are masterful manipulators of our brain’s natural reward system. Every feature – the incessant noise, the flashing lights, the position of the rolls and the sound of the coins hitting the dish – is designed to hijack the parts of our brain designed for the pursuit of food and sex and turn it into a river of quarters. Or so I remember.
Fortunately, there is a robust amount of research into why slot machines are so addictive, despite paying out only about 75% of what people put in. They are, some scientists have concluded, the most addictive of all the ways humans have designed to gamble, because pathological gambling appears faster in slots players and more money is spent on the machines than other forms of gambling. In Spain, where gambling is legal and slot machines can be found in most bars, more than 20.3 billion dollars was spent on slots in 2008 – 44% of the total money spent by Spaniards on gambling last year.
That data was published earlier this month by a psychologist from the Universidad de Valencia named Mariano Choliz in the Journal of Gambling Studies. Yes, such a publication exists! In the background of the paper, Choliz outlines the tricks that slot machines use to keep people feeding them:
- Operating on a random payout schedule, but appearing to be a variable payout; i.e. fooling the player into thinking that the more money they play, the more likely they are to win.
- “The illusion of control” in pressing buttons or pulling a lever to produce the outcome.
- The “near-miss” factor (more on this below)
- Increased arousal (where the sounds and flashing lights come in)
- Able to be played with very little money; the allure of “penny” slots.
- And perhaps most importantly, immediate gratification.
This last point is the subject of Choliz’s experiment, which puts a group of ten pathological gamblers in front of two different slot machines. One machine produces a result (win or lose) 2 seconds after the coin was virtually dropped (it was computer program), the other delayed the result until 10 seconds after the gambler hit play. In support of the immediate gratification theory, gamblers played almost twice as long on the 2-second machines than they did on the 10-second machines…even though the 10-second machines paid out more money on average!
Choliz concluded that the immediacy of the reward was part of what kept people at slot machines, making them so addictive. The quick turnaround between action and reward also allows people to get into a repetitious, uninterrupted behavior, which Choliz compares to the “Skinner boxes” of operant conditioning – the specialized cages where rats hit a lever for food or some other reward. It seems like a cruel comparison, but after my three days walking through the casinos, not an inaccurate one.
Another trick up the slot machine’s sleeve was profiled earlier this year by a group of scientists from the University of Cambridge. In the journal Neuron, Luke Clark and colleagues examined the “near-miss” effect, the observation that barely missing a big payout (i.e. two cherries on the payline while the third cherry is just off) is a powerful stimulator of gambling behavior.
The Cambridge researchers put their subjects in an fMRI machine to take images of their brains while they played a two-roll slot machine game. When the players hit a match and won money, the reward systems of the brain predictably got excited – the activation of areas classically associated to respond to food or sex I mentioned earlier. When players got a “near-miss,” they reported it as a negative experience, but also reported an increased desire to play! That feeling matched up with activation of two brain areas commonly associated with drug addiction: the ventral striatum and the insula (smokers who suffer insular damage suddenly lose the desire to smoke).
Clark and co. conclude that near-misses produce an “illusion of control” in gamblers, exploiting the credo of “practice makes perfect.” If you were learning a normal task such as hitting a baseball, a “near-miss” foul ball would suggest that you’re getting closer – it’s better than a complete whiff, after all. But for a slot machine, where pulling the lever has no impact on the rolls other than to start them moving and start the internal computer calculating, a “near-miss” is as meaningless as any miss.
Nevertheless, it’s this type of “cognitive distortion,” as Clark and colleagues name it, that makes slot machines such effective manipulators of our brains. Those massive, gaudy casino-hotels that I wore out a pair of shoes strolling through last week weren’t just built on a crafty use of probability, they were built on a exploitation of brain functions we are only just beginning to understand.