The bandwagon effect is a psychological phenomenon where people adopt certain behaviors, styles, or attitudes simply because others are doing so.
More specifically, it is a
cognitive bias
A cognitive bias is a systematic pattern of deviation from norm (philosophy), norm or rationality in judgment. Individuals create their own "subjective reality" from their perception of the input. An individual's construction of reality, not the ...
by which
public opinion
Public opinion, or popular opinion, is the collective opinion on a specific topic or voting intention relevant to society. It is the people's views on matters affecting them.
In the 21st century, public opinion is widely thought to be heavily ...
or behaviours can alter due to particular actions and beliefs rallying amongst the public. It is a psychological phenomenon whereby the rate of uptake of beliefs, ideas,
fads and trends
A fad, trend, or craze is any form of collective behavior that develops within a culture, a generation, or social group in which a group of people enthusiastically follow an impulse (psychology), impulse for a short time period.
Fads are Subje ...
increases with respect to the proportion of others who have already done so. As more people come to believe in something, others also "hop on the
bandwagon" regardless of the underlying evidence.
Following others' actions or beliefs can occur because of
conformism
Conformity or conformism is the act of matching attitudes, beliefs, and behaviors to social group, group norms, politics or being like-minded. Social norm, Norms are implicit, specific rules, guidance shared by a group of individuals, that guide t ...
or deriving information from others. Much of the influence of the bandwagon effect comes from the desire to 'fit in' with peers; by making similar selections as other people, this is seen as a way to gain access to a particular social group.
An example of this is
fashion trends wherein the increasing popularity of a certain garment or style encourages more acceptance.
When individuals make
rational
Rationality is the quality of being guided by or based on reason. In this regard, a person acts rationally if they have a good reason for what they do, or a belief is rational if it is based on strong evidence. This quality can apply to an ...
choices based on the information they receive from others, economists have proposed that
information cascades can quickly form in which people ignore their personal information signals and follow the behaviour of others.
Cascades explain why behaviour is fragile as people understand that their behaviour is based on a very limited amount of information. As a result, fads form easily but are also easily dislodged. The phenomenon is observed in various fields, such as
economics
Economics () is a behavioral science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goods and services.
Economics focuses on the behaviour and interac ...
,
political science
Political science is the scientific study of politics. It is a social science dealing with systems of governance and Power (social and political), power, and the analysis of political activities, political philosophy, political thought, polit ...
,
medicine
Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
, and
psychology
Psychology is the scientific study of mind and behavior. Its subject matter includes the behavior of humans and nonhumans, both consciousness, conscious and Unconscious mind, unconscious phenomena, and mental processes such as thoughts, feel ...
.
In
social psychology
Social psychology is the methodical study of how thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others. Although studying many of the same substantive topics as its counterpart in the field ...
, people's tendency to align their beliefs and behaviors with a group is known as '
herd mentality' or '
groupthink
Groupthink is a psychological phenomenon that occurs within a group of people in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome. Cohesiveness, or the desire for cohesivenes ...
'. The reverse bandwagon effect (also known as the
snob effect in certain contexts) is a cognitive bias that causes people to avoid doing something, because they believe that other people are doing it.
Origin

The phenomenon where ideas become adopted as a result of their popularity has been apparent for some time. However, the metaphorical use of the term ''bandwagon'' in reference to this phenomenon began in 1848.
A literal "bandwagon" is a
wagon
A wagon (or waggon) is a heavy four-wheeled vehicle pulled by Working animal#Draft animals, draft animals or on occasion by humans, used for transporting goods, commodities, agricultural materials, supplies and sometimes people.
Wagons are i ...
that carries a
musical ensemble
A musical ensemble, also known as a music group, musical group, or a band is a group of people who perform Instrumental music, instrumental and/or vocal music, with the ensemble typically known by a distinct name. Some music ensembles consist ...
, or band, during a parade, circus, or other entertainment event.
The phrase "jump on the bandwagon" first appeared in American politics in 1848 during the
presidential campaign of
Zachary Taylor
Zachary Taylor (November 24, 1784 – July 9, 1850) was an American military officer and politician who was the 12th president of the United States, serving from 1849 until his death in 1850. Taylor was a career officer in the United States ...
.
Dan Rice, a famous and popular circus clown of the time, invited Taylor to join his circus bandwagon. As Taylor gained more recognition and his campaign became more successful, people began saying that Taylor's political opponents ought to "jump on the bandwagon" themselves if they wanted to be associated with such success.
Later, during the time of
William Jennings Bryan's 1900 presidential campaign, bandwagons had become standard in campaigns, and the phrase "jump on the bandwagon" was used as a derogatory term, implying that people were associating themselves with success without considering that with which they associated themselves.
Despite its emergence in the late 19th century, it was only rather recently that the theoretical background of bandwagon effects has been understood.
One of the best-known experiments on the topic is the 1950s'
Asch conformity experiment, which illustrates the individual variation in the bandwagon effect.
Academic study of the bandwagon effect especially gained interest in the 1980s, as scholars studied the effect of
public opinion polls on voter opinions.
Causes and factors
Individuals are highly influenced by the pressure and norms exerted by groups. As an idea or belief increases in popularity, people are more likely to adopt it; when seemingly everyone is doing something, there is an incredible pressure to
conform.
Individuals' impressions of public opinion or preference can originate from several sources.
Some individual reasons behind the bandwagon effect include:
* Efficiency — Bandwagoning serves as a mental shortcut, or
heuristic
A heuristic or heuristic technique (''problem solving'', '' mental shortcut'', ''rule of thumb'') is any approach to problem solving that employs a pragmatic method that is not fully optimized, perfected, or rationalized, but is nevertheless ...
, allowing for decisions to be made quickly. It takes time for an individual to evaluate a behaviour or thought and decide upon it.
*
Normative social influence
Normative social influence is a type of social influence that leads to conformity. It is defined in social psychology as "...the influence of other people that leads us to conform in order to be liked and accepted by them." The power of normative ...
(
belonging) — People have the tendency to conform with others out of a desire to fit in with the crowd and gain approval from others.
As conformity ensures some level of social
inclusion and
acceptance
Acceptance in psychology is a person's recognition and assent to the finality of a situation without attempting to change or protest it. This plays out at both the individual and societal level as people experience change.
Types of acceptanc ...
, many people go along with the behaviours and/or ideas of their group in order to avoid being the odd one out.
The '
spiral of silence' exemplifies this factor.
*
Informational social influence — People tend to conform with others out of a desire to be right, under the assumption that others may know something or may understand the situation better.
In other words, people will support
popular beliefs because they are seen as correct by the larger social group (the 'majority').
Moreover, when it seems as though the majority is doing a certain thing, ''not'' doing that thing becomes increasingly difficult.
When individuals make
rational
Rationality is the quality of being guided by or based on reason. In this regard, a person acts rationally if they have a good reason for what they do, or a belief is rational if it is based on strong evidence. This quality can apply to an ...
choices based on the information they receive from others, economists have proposed that
information cascades can quickly form in which people decide to ignore their personal information signals and follow the behaviour of others.
*
Fear of missing out — People who are anxious about 'missing out' on things that others are doing may be susceptible to the bandwagon effect.
* Being on the 'winning side' — The desire to support a "winner" (or avoid supporting a "loser") can be what makes some susceptible to the bandwagon effect, such as in the case of voting for a candidate because they're in the lead.
In politics, bandwagon effects can also come as result of indirect processes that are mediated by political actors. Perceptions of popular support may affect the choice of activists about which parties or candidates to support by donations or voluntary work in campaigns.
Spread
The bandwagon effect works through a
self-reinforcing mechanism, and can spread quickly and on a large-scale through a
positive feedback loop
Positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop where the outcome of a process reinforces the inciting process to build momentum. As such, these forces can exacerbate the effects ...
, whereby the more who are affected by it, the more likely other people are to be affected by it too.
A new concept that is originally promoted by only a single advocate or a minimal group of advocates can quickly grow and become widely popular, even when sufficient supporting evidence is lacking. What happens is that a new concept gains a small following, which grows until it reaches a
critical mass, until for example it begins being covered by
mainstream media
In journalism, mainstream media (MSM) is a term and abbreviation used to refer collectively to the various large Mass media, mass news media that influence many people and both reflect and shape prevailing currents of thought.Noam Chomsky, Choms ...
, at which point a large-scale bandwagon effect begins, which causes more people to support this concept, in increasingly large numbers. This can be seen as a result of the
availability cascade, a self-reinforcing process through which a certain belief gains increasing prominence in public discourse.
Real-world examples
In politics
The bandwagon effect can take place in
voting
Voting is the process of choosing officials or policies by casting a ballot, a document used by people to formally express their preferences. Republics and representative democracies are governments where the population chooses representative ...
: it occurs on an individual scale where a voters opinion on vote preference can be altered due to the rising popularity of a candidate or a policy position. The aim for the change in preference is for the voter to end up picking the "winner's side" in the end. Voters are more so persuaded to do so in elections that are non-private or when the vote is highly publicised.
The bandwagon effect has been applied to situations involving
majority opinion
In law, a majority opinion is a judicial opinion agreed to by more than half of the members of a court. A majority opinion sets forth the decision of the court and an explanation of the rationale behind the court's decision.
Not all cases hav ...
, such as political outcomes, where people alter their opinions to the majority view. Such a shift in opinion can occur because individuals from the decisions of others, as in an
informational cascade
An information cascade or informational cascade is a phenomenon described in behavioral economics and network theory in which a number of people make the same decision in a sequential fashion. It is similar to, but distinct from herd behavior.
An ...
.
Perceptions of popular support may affect the choice of activists about which parties or candidates to support by donations or voluntary work in campaigns. They may strategically funnel these resources to contenders perceived as well supported and thus electorally viable, thereby enabling them to run more powerful, and thus more influential campaigns.
In economics
American economist
Gary Becker has argued that the bandwagon effect is powerful enough to flip the
demand curve
A demand curve is a graph depicting the inverse demand function, a relationship between the price of a certain commodity (the ''y''-axis) and the quantity of that commodity that is demanded at that price (the ''x''-axis). Demand curves can be us ...
to be upward sloping. A typical demand curve is downward sloping—as prices rise,
demand
In economics, demand is the quantity of a goods, good that consumers are willing and able to purchase at various prices during a given time. In economics "demand" for a commodity is not the same thing as "desire" for it. It refers to both the desi ...
falls. However, according to Becker, an upward sloping would imply that even as prices rise, the demand rises.
Financial markets
The bandwagon effect comes about in two ways in
financial market
A financial market is a market in which people trade financial securities and derivatives at low transaction costs. Some of the securities include stocks and bonds, raw materials and precious metals, which are known in the financial marke ...
s.
First, through
price bubbles: these bubbles often happen in financial markets in which the price for a particularly popular
security
Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, or any other entity or ...
keeps on rising. This occurs when many
investor
An investor is a person who allocates financial capital with the expectation of a future Return on capital, return (profit) or to gain an advantage (interest). Through this allocated capital the investor usually purchases some species of pr ...
s line up to buy a security
bidding
Bidding is an offer (often competitive) to set a price tag by an individual or business for a product or service ''or'' a demand that something be done. Bidding is used to determine the cost or value of something.
Bidding can be performed b ...
up the price, which in return attracts more investors. The price can rise beyond a certain point, causing the security to be highly
overvalued.
Second is
liquidity
Liquidity is a concept in economics involving the convertibility of assets and obligations. It can include:
* Market liquidity
In business, economics or investment, market liquidity is a market's feature whereby an individual or firm can quic ...
holes: when unexpected news or events occur,
market participants will typically stop trading activity until the situation becomes clear. This reduces the number of buyers and sellers in the market, causing liquidity to decrease significantly. The lack of liquidity leaves
price discovery
In economics and finance, the price discovery process (also called price discovery mechanism) is the process of determining the price of an asset in the marketplace through the interactions of buyers and sellers.
Overview
Price discovery is diff ...
distorted and causes massive shifts in
asset prices, which can lead to increased panic, which further increases uncertainty, and the cycle continues.
Microeconomics
In
microeconomics
Microeconomics is a branch of economics that studies the behavior of individuals and Theory of the firm, firms in making decisions regarding the allocation of scarcity, scarce resources and the interactions among these individuals and firms. M ...
, bandwagon effects may play out in interactions of demand and preference.
The bandwagon effect arises when people's preference for a commodity increases as the number of people buying it increases. Consumers may choose their product based on others' preferences believing that it is the superior product. This selection choice can be a result of directly observing the purchase choice of others or by observing the scarcity of a product compared to its competition as a result of the choice previous consumers have made. This scenario can also be seen in restaurants where the number of customers in a restaurant can persuade potential diners to eat there based on the perception that the food must be better than the competition due to its popularity.
This interaction potentially disturbs the normal results of the theory of
supply and demand
In microeconomics, supply and demand is an economic model of price determination in a Market (economics), market. It postulates that, Ceteris_paribus#Applications, holding all else equal, the unit price for a particular Good (economics), good ...
, which assumes that consumers make buying decisions exclusively based on price and their own personal preference.
In medicine
Decisions made by medical professionals can also be influenced by the bandwagon effect. Particularly, the widespread use and support of now-disproven medical procedures throughout history can be attributed to their popularity at the time. Layton F. Rikkers (2002),
professor emeritus
''Emeritus/Emerita'' () is an honorary title granted to someone who retirement, retires from a position of distinction, most commonly an academic faculty position, but is allowed to continue using the previous title, as in "professor emeritus".
...
of surgery at the
University of Wisconsin–Madison
The University of Wisconsin–Madison (University of Wisconsin, Wisconsin, UW, UW–Madison, or simply Madison) is a public land-grant research university in Madison, Wisconsin, United States. It was founded in 1848 when Wisconsin achieved st ...
, calls these prevailing practices medical bandwagons, which he defines as "the overwhelming acceptance of unproved but popular
edicalideas."
Medical bandwagons have led to inappropriate therapies for numerous patients, and have impeded the development of more appropriate treatment.
One paper from 1979 on the topic of bandwagons of medicine describes how a new medical concept or treatment can gain momentum and become mainstream, as a result of a large-scale bandwagon effect:
* The
news media
The news media or news industry are forms of mass media that focus on delivering news to the general public. These include News agency, news agencies, newspapers, news magazines, News broadcasting, news channels etc.
History
Some of the fir ...
finds out about a new treatment and publicizes it, often by publishing pieces.
* Various organizations, such as government agencies, research foundations, and private companies also promote the new treatment, typically because they have some vested interest in seeing it succeed.
* The public picks up on the now-publicized treatment, and pressures medical practitioners to adopt it, especially when that treatment is perceived as being novel.
* Doctors often want to accept the new treatment, because it offers a compelling solution to a difficult issue.
* Since doctors have to consume large amounts of medical information in order to stay aware of the latest trends in their field, it is sometimes difficult for them to read new material in a sufficiently critical manner.
In sports
One who supports a particular sports team, despite having shown no interest in that team until it started gaining success, can be considered a "
bandwagon fan".
In social networking
As an increasing number of people begin to use a specific social networking site or application, people are more likely to begin using those sites or applications. The bandwagon effect also
This research used bandwagon effects to examine the comparative impact of two separate bandwagon heuristic indicators (quantitative vs. qualitative) on changes in news readers' attitudes in an online comments section. Furthermore, Study 1 demonstrated that qualitative signals had a higher influence on news readers' judgments than quantitative clues. Additionally, Study 2 confirmed the results of Study 1 and showed that people's attitudes are influenced by apparent public opinion, offering concrete proof of the influence that digital bandwagons.
In fashion
The bandwagon effect can also affect the way the masses dress and can be responsible for clothing trends. People tend to want to dress in a manner that suits the current trend and will be influenced by those who they see often – normally celebrities. Such publicised figures will normally act as the catalyst for the style of the current period. Once a small group of consumers attempt to emulate a particular celebrity's dress choice more people tend to copy the style due to the pressure or want to fit in and be liked by their peers.
See also
References
Bibliography
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External links
Definition at Investopedia
{{DEFAULTSORT:Bandwagon Effect
Cognitive biases
Conformity
Crowd psychology
Cultural trends
Economics effects
Political metaphors
Propaganda techniques
Revolution terminology