Why are we likely to spend more after reading the word “bye”?

The Bye-Now Effect

, explained.
Bias

What is the Bye-Now Effect?

The bye-now effect describes the tendency for consumers to think of the word “buy” when they see the word “bye.” This priming effect, triggered by the homophone for “buy,” can subtly influence consumer behavior and lead to increased spending or impulse buying.

The image shows a stick figure looking at two posters on a brightly colored background. The poster on the left has the words "BYE CALORIES" and an illustration of a food item. The poster on the right shows a colorful bag. The stick figure has a thought bubble that reads, "I NEED TO BUY THAT BAG," indicating the figure is contemplating the purchase of the bag rather than focusing on the other poster.

Where this bias occurs

Imagine that you are reading a magazine and you come across a letter from the editor. She signs off with a big, bold, “bye” at the end of her article. Thinking nothing of it, you flip the page and see an advertisement for a perfume. The bye-now effect, sometimes referred to as the buy-now effect, suggests that you are now more likely to buy the perfume because you just read the word “bye.”

In this case, it is likely that the magazine strategically placed the perfume advertisement right after the letter from the editor in order to have the word “bye” prime readers to shift their minds to the purchasing associations of the word “buy.” Although it is unlikely that we would consciously draw the connection between the two, the bye-now effect shows that we can quite drastically change our consumption behavior based on priming words. 

The magazine you’re reading likely features several other examples of priming, with certain colors, messages, or images strategically placed throughout to subtly influence your thoughts and gently nudge you toward a purchase decision. Perhaps you read another article discussing minimalism, then soon encounter an ad for storage containers. The bye-now effect also primes the mind—but instead uses similar-sounding words to influence consumer decisions rather than more obvious imagery or overt connections between informational content and product placements. In this way, the bye-now effect leverages the subconscious link between homophones, making us more inclined to part with our money—without us even realizing what’s happening.

Related Biases

Individual effects

Overspending

The bye-now effect is but another cognitive bias that influences our financial decision-making. The bye-now effect stipulates that when we encounter the word “bye,” we are influenced to spend more money than we would if we had not seen the word. As a result, the bye-now effect is a bias that can drive impulsive behavior such as irrational overspending.

Misleading associations

The bye-now effect also demonstrates how our cognitive thinking can easily be misled by homophones. Ideally, our brains automatically engage in homophone suppression, unconsciously reducing the activation of homophone associations so we don’t confuse words with similar sounds.1 However, this suppression process isn’t perfect. When we are presented with a lot of information, our brains have a harder time correctly coding each individual part of the cognitive load, and we end up mapping out inappropriate links to words.1 We lose focus on the meaning of individual words and instead consider the associations of similar-sounding words. In reality, the only association between “bye” and “buy” is the phonological identities of the words, and reading one should not cause us to think of the other.

The image shows two stick figures, each smiling. The figure on the left is waving with an empty hand, while the figure on the right is holding a stack of money. Between them is a "not equal to" symbol (≠), suggesting a comparison where waving is not equivalent to offering money. The background is a simple solid purple, emphasizing the contrast between the two figures.

As the bye-now effect is a result of our inability to correctly focus on the individual meanings of words, it also means that some people are unfairly affected by it. Research has suggested that low-skilled readers would be more affected by the bye-now effect. Morton Gernsbacher and Mark Haust, cognitive psychologists, suggested that memory cells created in our brains have the ability either to activate or suppress the activation of other memory cells.2 They stated that low-skilled readers have worse access to recently read information, thereby making them more likely to activate the incorrect memory cells in recollection. They are worse at homophone suppression, and as a result, are more likely to be thrown off by homophones.2

Interactions with other biases

Like most cognitive biases, the bye-now effect doesn’t take place in isolation. It likely interacts with several other economic heuristics to influence our behavior in significant ways. For example, when combined with loss aversion, the priming effect of the word “bye” could make consumers worry about missing out on a deal, creating a sense of urgency and prompting action. This may result in a stronger bye-now effect than you might experience just coming across the word “bye” at the end of a magazine article.

The bye-now effect could also interact with confirmation bias, which describes our tendency to favor information that fits with our existing beliefs. Say you arrive on an e-commerce website and add a few interesting products to your cart, but you get distracted before you complete the checkout and end up browsing around on other websites. Suddenly, you receive an email about your abandoned cart, saying “Is this goodbye? Take one last look at the items in your cart!” Because you already added items to your cart with the intention of checking out—and therefore primed to buy something before seeing this message—the bye-now effect might provide the subtle push you need to complete your purchase.

Systemic effects

Impact on consumer behavior

As was previously discussed, the bye-now effect can help inform marketing strategies to entice consumers to spend. The bye-now effect demonstrates that small, subtle cues are sometimes enough to influence behavior, and therefore homophones are an easy trick that brands can use to boost spending and consumption. Alternatively, the fact that a singular word is enough to affect behavior means that companies need to be very careful when they choose their name, slogan, and branding. Just one wrong word could make the difference between a campaign being successful or not.3,4

One example of a poor name choice is the restaurant “Sam & Ella’s Chicken Palace” in Ohio. Although we may not realize it at first glance, when we read “Sam & Ella”, we may be primed to think of a phonetically similar word, salmonella.5 This is definitely not a good association to be made with a chicken restaurant. This example demonstrates that while homophone priming in the case of the buy-effect may benefit companies, depending on the homophone, there can be negative consequences of word priming as well.

Implications for behavioral economics

Moreover, economic models are often based on the traditional view that consumers are fully aware of their decisions and behaviors. The bye-now effect occurs on an unconscious level, meaning that we aren’t fully aware of what is influencing our decisions. This means that our models may be inaccurate. As they are often used to predict human behavior, biases like the bye-now effect suggest that we need to vastly rethink economic models. Understanding the biases and heuristics that drive our financial decisions has important implications for the study of behavioral economics, a field dedicated to developing nuanced models of consumer behavior that more accurately reflect real-world decision-making. 

Customer relationships

While it may seem like an obvious choice for marketers to use the bye-now effect to encourage an increase in consumer spending, it’s crucial to consider the implications of exploiting consumer psychology for profit. As more and more consumers learn about the manipulative tactics often used by advertisers, they are becoming increasingly suspicious of marketing material and the motives behind business messaging. As a result, today’s customers can spot subtle techniques like the bye-now effect more easily—just by reading this article, you’re more likely to notice when brands use the bye-now effect in their advertising messages. Unsurprisingly, this can drive away potential first-time shoppers and hurt long-term customer loyalty. Instead of using deceptive tactics like these, advertisers may want to shift their focus toward building long-term customer relationships by creating value for customers, meeting consumer demands, and prioritizing transparency in their marketing.10

Why it happens

Our brains are very complex and do not passively process stimuli. The bye-now effect is evidence that at any given time, our brains are considering the different links between words and other familiar concepts and associations. While these links are necessary to help us categorize the vast amount of information that we have to process every day, they may lead to us changing our behavior. When our brains are presented with large amounts of information, they use shortcuts to decipher meaning from our surroundings. This can influence our behavior and decision-making processes outside of our awareness.

Word priming occurs because when we encounter a word, it acts as a nudge for our brains to map out the potential meanings associated with the word. When we encounter homophones, our brains are nudged to not only think of the associations of one word but any words that are phonologically similar. When you read the word “see”, for example, you may easily think about the “sea.” This is a form of illusory correlation, which occurs when we see an association between two unrelated things. We perceive an association between homophones due to their similar sound, even when there is no logical connection.

Derick Davis and Paul Herr, the researchers who first studied the bye-now effect, believed that this cognitive bias occurs because of our inability to successfully employ homophone suppression when we encounter a large cognitive load.1 What that means is that it actually takes effort and skill to be able to stay focused on a particular word or meaning and to suppress any irrelevant associations, such as phonologically similar words. When we are presented with a lot of information, our brains are focused on processing that information and fail to retain focus for each specific part of the load. As a result, we get sidetracked by inappropriate meanings.

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Why it is important

The bye-now effect can impact our financial decision-making skills, causing us to lose sight of rational and logical economic decision-making, leading to unintended consequences such as overspending or buyer’s remorse. If we were purely rational thinkers when it came to decisions involving money, we would not be influenced by the presence of a prime, because this should have no impact on how much we believe something is worth.

It is important for us to be aware of cognitive biases like the bye-now effect because they can be used as marketing strategies to try and manipulate us into overspending. When our purchasing decisions can be influenced by something as small as reading the word “bye,” it is clear that we are vulnerable to such strategies. Since the bye-now effect occurs on an unconscious level, we need to learn more about it to try and prevent ourselves from being influenced by it.

Although the bye-now effect specifically describes a situation in which the word bye causes us to think of the associated meanings of its homophone, buy, the process behind the effect can be applied to a number of different phonologically similar words that could influence all kinds of behaviors. It forces us to consider how the names, slogans, and branding that companies use are all carefully and tactically chosen to influence our semantic associations with the brand. For example, consider the company name “Starbucks.” The reference to money in the name could potentially be a source of priming.

How to avoid it

As has been mentioned, the bye-now effect operates on an unconscious level, making it very difficult to identify and avoid. It is impossible to stop our brains from thinking of the associations of a word because this is actually the only way we come to understand the meaning of words; they would just be letters on a page if they didn’t act as symbols for something meaningful.

The issue with the bye-now effect comes from thinking of inappropriate associations. The words “bye” and “buy” do not share similar meanings–-they only share a similar sound. To avoid the bye-now effect, we need to be better at suppressing homophones. Since research has shown that this effect happens when we try to process large cognitive loads, to avoid the bye-now effect, we can try to limit our cognitive load to remain focused.1 That can mean dividing up information into smaller chunks or getting rid of distractions when we are trying to read an important article. The less information we have to process at once, the less likely we are to be primed to think of incorrect associations.

How it all started

Although studies examining how words act as primes have been around for a while, the bye-now effect was first studied by Derick Davis, a professor of commerce, and Paul Herr, a professor of marketing, in 2014.1 The professors understood the psychological phenomenon of priming, a technique where the introduction of one stimulus is used to make individuals think about another concept.6 In particular, Davis and Herr were interested in how words were able to prime both semantic and conceptually related concepts.

The two professors were primarily interested in homophones as a method of priming. Homophones are words that are pronounced the same but do not have the same meaning. They can be spelled the same, such as “bass” being the word used both for a kind of fish and a kind of instrument, or can have different spellings, such as “flower” and “flour.” Davis and Herr, due to their background in economics, wanted to examine the homophones “bye” and “buy.” They believed that reading the word “bye” could prime individuals to think about the verb buy and influence them to spend more as a result.

In their experiment, Davis and Herr asked their participants to read through a travel blog post. Participants were told they would then be asked to rate how informative the post was. In the control group, the end of the article was signed off with “so long,” whereas for the experimental group, the end of the article was signed off with “bye-bye.” Afterward, the participants were asked to complete another task, which they believed was unrelated. Participants were told a new restaurant was opening up nearby. They were told the restaurant was promoting a “name your own price” dinner-for-two package. Participants were asked how much they would be willing to pay for the package.1

The results of the study were astonishing. Davis and Herr recorded that participants who had seen the “so long” version of the blog post were willing to pay an average price of under $30 for the dinner package. In comparison, the participants who had seen the “bye-bye” version of the blog post were willing to pay, on average, just over $45 for the dinner package. From these results, Davis and Herr concluded that reading the word “bye” had primed participants to think of its homophone, “buy,” and the cognitive associations with that verb, making them more willing to spend money.1

A visual comparison of two different blog sign-offs and their corresponding expenses on dinner. At the top is a simple illustration of a travel blog page, featuring a palm tree and sand. Below the blog, there are two sign-off phrases: "So Long" and "Bye Bye," each leading to their respective values via orange arrows. "So Long" is associated with spending $30 on dinner, while "Bye Bye" is linked to spending $45. The background is a purple shade, and the hand-drawn text adds to the casual tone of the illustration.

How it affects product

The bye-now effect could be leveraged in a number of ways to subtly influence consumers interacting with digital products like websites, apps, and software. For example, marketers could incorporate the bye-now effect into the simple wording of an exit-intent popup—a common technique used on e-commerce stores to retain visitors who intend to leave the site. A popup leveraging the bye-now effect might say, “Before you say goodbye, check out these other great products.” This could prime users to think about buying something, and might just encourage them to stick around.

Similarly, chatbots could be programmed to say “Bye for now!” after conversations with site visitors, subtly priming them to think about buying before leaving the interaction. Rather than a random event, this parting phrase could be strategically placed after the chatbot makes a product recommendation, provides the user with a special offer, or shares evidence of social proof, increasing the likelihood that they’ll make a purchase. Ideally, these subtle priming techniques would integrate seamlessly with the customer experience rather than feeling like an obvious advertisement or manipulative sales tactic.

The bye-now effect and AI

AI systems are increasingly used to predict behavior and influence consumer decisions in subtle ways. The bye-now effect presents yet another virtually undetectable method by which algorithms could manipulate individuals’ decision-making processes, in this case by priming our behavior with well-placed homophones. By using predictive analytics to anticipate our behavior, AI systems could help marketers decide when to use linguistic cues to maximize the impact of the bye-now effect while keeping these priming techniques under the radar, so they’re less likely to become the subject of criticism or negatively impact customer relationships.

Example 1 - The mother tongue

Homophones are language-specific, meaning that it is only in English that the words “bye” and “buy” are phonetically identical. In Spanish, “buy” translates into “comprar”, whereas “bye” translates into “adios.”

These days, many companies operate on a global scale, and that can mean that their brand names and slogans are translated. If a company has tried to use the buy-effect or other homophones to their advantage, they need to realize that the effect will not necessarily occur in other languages. As homophones are language-specific, this also suggests that international companies need to have a better understanding of the language that they use, because a word that may not have a homophone in English could easily have one in another language and cause undesirable priming.

Furthermore, not all languages actually have many homophones, meaning that speakers and readers of that language are less likely to have problems with homophone suppression.3 Mandarin, the most popular language in China, is a less phonetic language because words are presented as symbols. It is a pictorial language, so the sounds of words doesn’t correspond to the way they appear in texts.7 This means that Mandarin speakers are less likely to have difficulty suppressing associated meanings of sounds since they don’t understand language phonetically.8

Example 2 - Priming and behavior

Although in the case of the bye-now effect, homophone priming results in undesirable behavior, there are also cases where homophone priming can be beneficial for us.

Davis and Herr, the researchers who established the bye-now effect, also conducted a study on the homophones “wait” and “weight.”9 In this experiment, participants were told they had to complete a task. Some participants saw a “wait time” before they were able to complete their task, meaning that they read the word “wait.”

The task then asked participants to guess how heavy a grocery bag was. Davis and Herr found that participants who had read the word “wait” before completing their task had significantly higher guesses for the weight of the grocery bag, suggesting that the word “wait” had primed its homophone, “weight.”9

While guessing the weight of a grocery bag may not seem to have an important impact on our lives, Davis and Herr believed that the homophones “wait” and “weight” could be used to influence subsequent exercise or food-related judgments.9 This knowledge could therefore be used to promote healthier decisions and support those on a weight-loss journey. Companies or movements advocating for weight loss could subtly use the word “wait” in the literature they circular, in order to help draw attention to weight and make people more likely to consider how their decisions relate to their health.3

Summary

What it is

The bye-now effect describes the tendency for individuals to think of the word “buy” when they read the phonetically similar word “bye.” As a result, our behavior is primed by the associations of “buy,” and this can cause us to spend more.

Why it happens

The bye-now effect occurs because when we have to process vast amounts of information, it is easy for our brain to mix up different links and associations. Even though “bye” is not semantically related to “buy,” they are phonetically identical, and the homophones end up causing us to think of inappropriate associations. Words are able to act as nudges which can be a key driver of our behavior.

Example 1 - The bye-now effect occurs only for the English language

The bye-now effect is language-specific because it is only in English that the word “bye” sounds the same as the word “buy.” Different languages have different homophones, meaning that priming varies from language to language.

Some languages, like Mandarin, actually have very few homophones,  because they are not phonetic languages.

Example 2 - Not all homophone priming has negative consequences

We want to avoid the bye-now effect because it causes us to deviate from rational purchasing decisions. However, priming caused by different homophones can have positive influences on our behavior. For example, the word “wait” is phonetically similar to the word “weight.” If we are primed by the word “wait,” we may change our exercise and food behavior, and this can have positive outcomes on our health and well-being.

How to avoid it

It is believed that the bye-now effect is more prominent when we are met with a large cognitive load. In other words, when we have to process more information, our brains find it more difficult to process each individual word of that information, making our homophone suppression worse. To try and activate homophone suppression, we should ensure that we are focused when we read something important. Focus can be achieved by splitting information into chunks or ensuring that we are in an environment with few distractions.

Related TDL articles

Priming Effect

The bye-now effect is just one behavioral phenomenon involving priming. Priming occurs when exposure to one stimulus or idea influences how we respond to another, influencing our behavior in surprising ways. This article explores the priming effect in great detail and includes several examples of how this bias affects our lives—not only influencing our purchase decisions, but also how we learn, work, and interact with others. 


How (Not) to Use Behavioral Economics to Influence Consumer Decisions

If you have any concerns about companies leveraging biases like the bye-now effect to influence consumers, you’re not alone. Check out this article to learn how one controversial company leveraged behavioral economics to encourage customers to make snap, irrational spending decisions and why these kinds of manipulative practices are unfair to consumers.

Sources

  1. Davis, D. F., & Herr, P. M. (2014). From bye to buy: Homophones as a phonological route to priming. Journal of Consumer Research, 40(6), 1063-1077. https://doi.org/10.1086/673960
  2. Gernsbacher, M. A., & Faust, M. E. (1991). The mechanism of suppression: A component of general comprehension skill. Journal of Experimental Psychology: Learning, Memory, and Cognition, 17(2), 245-262. https://doi.org/10.1037/0278-7393.17.2.245
  3. Coglode. (2020, September 22). Bye-now effect. https://www.coglode.com/gem/bye-now-effect
  4. Yorkston, E., & Menon, G. (2004). A sound idea: Phonetic effects of brand names on consumer judgments. Journal of Consumer Research, 31(1), 43-51. https://doi.org/10.1086/383422
  5. Johnson, S., CPA. (2017, May 23). The 25 most ridiculous business names ever. HuffPost. https://www.huffpost.com/entry/the-25-most-ridiculous-business-names-ever_b_5924663ae4b0b28a33f62fd9
  6. Cherry, K. (2020, February 21). Priming and the Psychology of Memory. Verywell Mind. https://www.verywellmind.com/priming-and-the-psychology-of-memory-4173092
  7. TutorMandarin. (2018, April 30). Is Chinese a Phonetic Language? https://www.tutormandarin.net/en/is-chinese-a-phonetic-language/
  8. Cheng, C., & Yang,M . (1989). Lateralization in the visual perception of Chinese characters and words. Brain and Language, 36(4), 669-689. https://doi.org/10.1016/0093-934x(89)90093-x
  9. Davis, D., & Herr, P. (2012). From Bye-Bye to Buy-Buy: Influence of Homophone Priming on Judgment and Behavior. Advances in Consumer Research (40), 585-586.
  10. Gatignon, H. (2016, May 3). Manipulating consumers is not marketing. INSEAD Knowledge. https://knowledge.insead.edu/marketing/manipulating-consumers-not-marketing

About the Authors

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Dan Pilat

Dan is a Co-Founder and Managing Director at The Decision Lab. He is a bestselling author of Intention - a book he wrote with Wiley on the mindful application of behavioral science in organizations. Dan has a background in organizational decision making, with a BComm in Decision & Information Systems from McGill University. He has worked on enterprise-level behavioral architecture at TD Securities and BMO Capital Markets, where he advised management on the implementation of systems processing billions of dollars per week. Driven by an appetite for the latest in technology, Dan created a course on business intelligence and lectured at McGill University, and has applied behavioral science to topics such as augmented and virtual reality.

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Dr. Sekoul Krastev

Sekoul is a Co-Founder and Managing Director at The Decision Lab. He is a bestselling author of Intention - a book he wrote with Wiley on the mindful application of behavioral science in organizations. A decision scientist with a PhD in Decision Neuroscience from McGill University, Sekoul's work has been featured in peer-reviewed journals and has been presented at conferences around the world. Sekoul previously advised management on innovation and engagement strategy at The Boston Consulting Group as well as on online media strategy at Google. He has a deep interest in the applications of behavioral science to new technology and has published on these topics in places such as the Huffington Post and Strategy & Business.

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