From Nuclear Wastewater to Cognitive Dissonance — What Have We Been Through?

After the major earthquake and tsunami, the Fukushima Daiichi nuclear power plant in Japan suffered a serious nuclear accident, leading to the melting of nuclear fuel. Emergency water injection for cooling produced large amounts of contaminated water. Even after treatment, this water still contained hard-to-remove tritium. Facing the continuously increasing treated water, the Japanese government and Tokyo Electric Power Company (TEPCO) proposed to dilute it and release it into the Pacific Ocean. This plan sparked widespread controversy, with environmental groups, neighboring countries, and fishing communities concerned about possible impacts on marine ecology and seafood safety. To ease these concerns, the government and TEPCO committed to strict monitoring, ensuring the release is safe, transparent, and meets international standards. The International Atomic Energy Agency (IAEA) is also participating in the review, providing technical support. Despite this, opinions on the release plan remain divided.

As citizens who are not directly involved in the whole process, yet always have a personal stake in it, we exhibit three different psychological responses when facing challenges of this scale.

1. When the Japanese nuclear power plant announced the discharge of nuclear wastewater, rumors spread that iodized salt could effectively block nuclear radiation. As an individual, if you accept this notion unthinkingly and rush to stockpile salt, that is the bandwagon effect;

2. If this individual is a scientist, with a very clear understanding of whether iodized salt is effective against nuclear wastewater, but seeing everyone around them stockpiling, gives up trying to explain the science to neighbors, and joins the stockpiling crowd, that is herd mentality;

3. When the panic-buying fervor gradually subsides, the scientist who joined the herd clearly realizes that he should have stuck to his own view. But having already bought the salt, he is forced into cognitive dissonance, forcing himself to accept the idea that iodized salt can to some extent prevent nuclear contamination, but current science just cannot explain it. For the individuals swept up in the bandwagon effect, when faced with the pile of salt they have hoarded, they try to convince themselves that nuclear contamination has already spread, and that the government is keeping quiet to prevent chaos — thereby, in some way, letting themselves believe that this round of stockpiling was not an impulse, but a successful strike by their mysterious sixth sense. That too is cognitive dissonance.

Three Concepts

Bandwagon Effect

The bandwagon effect refers to the phenomenon in which, during individual decision-making, when an individual observes that those ahead of them are making the same choice, they follow suit regardless of their own information or judgment. This effect often appears in situations with incomplete information transparency: the individual may assume that the group's behavior reflects some information unknown to them, and therefore decides to "follow the crowd" rather than rely on their own independent evaluation. The bandwagon effect emphasizes the role of social information in decision-making, and how that information can lead to the rapid spread of group behavior, even when the behavior may ultimately be based on inaccurate or misleading initial judgments.

In the scene, those individuals blindly buying iodized salt are facing a new situation (nuclear wastewater discharge) with insufficient information, blindly following the group's behavior. They didn't think for themselves, but relied on the group's behavior to make a decision, which matches the characteristics of the cascade effect. "Cascade effect" is usually used to describe the chain reaction of information or behavior among individuals, especially in cases where there is insufficient information or an overreaction to a piece of information. In the example above, people started buying salt in large quantities based on unverified information (that iodized salt can effectively block nuclear radiation). This phenomenon reflects the chain effect of information dissemination and individuals' coping behavior in situations of uncertainty.

Conformity

Conformity refers to the psychological state in which an individual changes their behavior, attitude, or beliefs under group pressure in order to stay aligned with the group. This state is influenced not only by explicit group pressure but also by an inner need for acceptance and recognition. Conformity can be divided into several forms: compliance (outward behavior changes while the inner self disagrees), internalization (genuinely accepting the group's views), and identification (based on认同 with a member of a group). Conformity reveals the profound influence of social and cultural environments on individual decision-making.

By contrast, the scientist, though he understood that iodized salt was not an effective way to combat nuclear radiation, joined the panic-buying crowd under the influence of the surrounding group. Although he had a clear understanding, ultimately — out of social pressure, morality, or emotional needs — he abandoned his own view and followed the crowd. Under group influence, the individual takes action consistent with the group in order to gain acceptance or avoid rejection. Even when the individual holds a different view or information, they may submit to group pressure and act against their own original judgment. Even though the scientist himself was skeptical of the effectiveness of iodized salt against nuclear wastewater, upon seeing the widespread behavior of the public, he chose to join the panic-buying — a manifestation of conformity.

Cognitive Dissonance

Cognitive dissonance theory was proposed by Leon Festinger in 1957. It describes the discomfort an individual experiences when holding two or more conflicting cognitions (such as beliefs, attitudes, or behaviors). To reduce this discomfort, the individual will strive to reduce the conflict between these cognitions, restoring inner consistency and harmony by changing beliefs, adjusting attitudes, or modifying behavior. Cognitive dissonance theory emphasizes the individual's need for psychological consistency, as well as the self-adjustment process undertaken to achieve that goal.

Whether it's conformist scientists or individuals caught in the cascade effect, after acting they realize that their behavior conflicts with their inner beliefs. To reduce that discomfort, they may try to change their cognition to be consistent with their behavior—that is, by accepting some explanation or reason to rationalize their behavior. When individuals hold contradictory beliefs, attitudes, or behaviors, they experience psychological discomfort. To reduce this discomfort, they may change their beliefs or find rationalizations to explain their behavior. Both scientists and ordinary people can experience cognitive dissonance afterwards, and they may seek or create new reasons to prove that their original decision was right, even if that reason doesn't match the facts.

Three Differences

Overall, the bandwagon effect emphasizes the phenomenon of information dissemination and behavior imitation in groups; the herd mentality describes the situation where an individual is influenced by a social group and changes their own behavior or attitude; and cognitive dissonance involves the internal contradiction between an individual's cognitive elements, as well as the actions taken to maintain consistency. Although the bandwagon effect, herd mentality, and cognitive dissonance all involve behavioral or cognitive responses of individuals in the face of external pressure or internal cognitive conflicts, they are not exactly the same, nor do they entirely stem from the same root cause.

1. Cognitive dissonance is the only one of these three that directly points to an internal cognitive contradiction in the individual. It emphasizes the discomfort the individual feels upon becoming aware of the cognitive contradiction, and the actions taken to alleviate that discomfort. The existence of cognitive dissonance can explain some cases of conformity and cascade effects, but it is not the only explanation for them.

2. The cascade effect focuses more on the phenomenon of behavioral imitation in information transmission within a group. In the cascade effect, the individual is influenced by the behavior or opinions of others in the group, not by their own internal cognitive contradiction. This influence may lead to information distortion and group consensus, but it doesn't necessarily involve internal cognitive contradictions.

3. Conformity places more emphasis on the attitude adjustment that occurs when an individual faces social pressure. While the existence of conformity may be influenced by cognitive inconsistency, its main focus is on the individual choosing to align with the group to gain social acceptance or avoid exclusion—not necessarily to alleviate an internal cognitive contradiction.

Therefore, although these three are related to some extent, they are not the same concept, nor do they arise entirely from the same root cause. Cognitive dissonance may be one possible factor in these phenomena, but they can also be influenced by other psychological and social factors.

Two Questions

Both the bandwagon effect and herd mentality involve the individual giving up the self and merging into the crowd — how do you distinguish between these two psychological effects?

Cascade effect and conformity both involve individuals giving up the self and integrating into a group or the masses, but they differ in substance:

1. Cascade Effect:

   • The cascade effect typically refers to a situation where, facing an uncertain scenario, an individual is influenced by the behavior or opinions of other members of the group, and thereby changes their own behavior or opinions.
   • The defining feature of this effect is that the individual may not have sufficient information or time to think, but instead makes a decision based on the existing behavior or opinions of the group, because they believe the group may possess more information or knowledge.
   • The cascade effect usually appears in novel or ambiguous situations, where individuals are more easily influenced by the first person or the majority in the group.

2. Conformity:

   • Conformity refers to the phenomenon where an individual changes their attitude or behavior under group pressure from society. An individual may abandon their own views or behavior to align with the expectations of the majority in the group.
   • Conformity tends to place greater emphasis on the influence of group pressure and social norms on the individual, rather than simply deciding behavior based on the existing behavior or opinions of the group.
   • Unlike the cascade effect, conformity may occur in a wider range of circumstances — both novel and familiar situations. An individual may choose to conform out of a desire to avoid social rejection, gain a sense of belonging, or alleviate internal anxiety.

Therefore, although the bandwagon effect and herd mentality both involve individuals abandoning their own views to fit in with the crowd, the reasons they occur, the underlying motivations, and the situations may differ.

1. Bandwagon effect describes the tendency, when facing new situations or new information, for individuals to follow the person who first acts or expresses an opinion in the group, abandoning independent thought. In this case the individual may lack enough information or time to think, so chooses to rely on the group rather than think independently.
2. Herd mentality places more emphasis on the individual already having made their own judgment, but abandoning it in order to fit into the group or to meet moral, emotional, and other needs. This can happen in any context, not only with new situations or new information—the individual already has their own view, but for various reasons chooses to follow the group's view or behavior.

Can long-term "conformity" also cause individual "cognitive dissonance"?

Yes, long-term conformity can lead to cognitive dissonance in individuals. Cognitive dissonance refers to the presence of contradictory cognitive elements within a person — such as conflicting beliefs, attitudes, or behaviors. Prolonged conformity can conflict with a person's internal values or genuine thoughts, thereby producing cognitive dissonance.

For example, an individual may conform over the long term, abandoning their own views or behavior to meet the group's expectations, even when this conflicts with their true inner thoughts. Over time, the individual may come to realize that their behavior is inconsistent with their inner values, leading to cognitive discomfort or tension. In such a case, the individual may experience cognitive dissonance — becoming aware of the contradiction between their behavior and their inner cognitions. To alleviate this discomfort, the individual may take measures such as re-evaluating their behavior, adjusting their views, or seeking a way to be more consistent with the group's views.

Therefore, long-term conformist behavior can affect an individual's cognition, leading to cognitive dissonance.

One Method

How to Use Google's PageRank Algorithm to Correct the Bandwagon Effect

Google's web page ranking algorithm, specifically the PageRank algorithm, determines the importance and ranking of web pages based on the number and quality of links between them. Although this algorithm was originally designed to improve the relevance and quality of search results, its core idea can inspire us to think about how to address and correct the cascade effect.

The cascade effect in information dissemination manifests as a chain reaction based on incorrect or unverified information, which often leads to panic buying, rumor spreading, or social unrest. Below are some strategies inspired by Google's PageRank algorithm that can help correct the cascade effect:

1. Increase the visibility of authoritative information sources: Similar to how PageRank identifies and elevates the ranking of authoritative web pages, we can counter the cascade effect by increasing the visibility of authoritative sources (such as official public health agencies, well-known scientists, and research institutions). This means prioritizing the promotion of information from these sources on information dissemination platforms, making them easier for the public to access and identify.

2. Link quality over quantity: The PageRank algorithm considers not only the number of links but also the quality of the link sources. Applied to correcting the cascade effect, this means that when evaluating information, more emphasis should be placed on the quality of the source rather than just the volume of information. Promoting higher-quality information to be more widely disseminated can help reduce decisions based on misleading information.

3. Strengthen cross-domain linking: In PageRank, a page's ranking can be elevated by links from other high-authority pages. Similarly, in information dissemination, enhancing cross-domain information sharing and linking (for example, having public health information broadly discussed and cited on non-medical platforms) can improve the efficiency and reach of correct information.

4. Dynamically adjust information dissemination weight: Google continuously adjusts its algorithm to counter attempts to manipulate rankings, meaning that information dissemination mechanisms also need to constantly adjust which information should be prioritized based on real-time feedback. For example, by monitoring the propagation paths of rumors and misinformation, dynamically adjusting the algorithm to slow down and limit the spread of such information.

5. Encourage diversity and critical thinking: One goal of Google's algorithm is to provide diverse search results. When responding to the cascade effect, encouraging the public to engage with and consider multiple information sources and cultivating critical thinking helps people better evaluate the credibility of information and reduces blind following.

By borrowing from the principles of Google's PageRank algorithm, we can more effectively respond to the bandwagon effect, promote a healthier information environment, and reduce the social problems caused by collective action based on unverified information.

From Parts to Whole

1. "Bandwagon Effect" is mindless following: The bandwagon effect emphasizes that when faced with collective action, an individual may join in without careful thought. This typically occurs in situations of information asymmetry or driven by tense emotions, where the individual may imitate others' behavior without question, even when such behavior is not based on sound judgment or correct information.

2. "Conformity" is abandoning the self: To blend in with the group or avoid conflict with it, the individual suppresses their own views or preferences. In decision-making under group influence, the individual may sacrifice their independent judgment to conform to the group's behavior or beliefs.

3. "Cognitive Dissonance" is self-accommodation: When an individual encounters contradictory beliefs, attitudes, or behaviors, they feel discomfort. To reduce this discomfort and restore psychological balance, the individual may adopt various strategies to adjust their cognitive system — ignoring, denying, or reinterpreting information that conflicts with their existing beliefs, in order to preserve inner harmony. To reduce internal cognitive dissonance and enhance self-consistency, they choose information and interpretations that support or align with their existing beliefs, attitudes, or behaviors, thereby avoiding direct challenges to their self-perception. This strategy involves selective acceptance, interpretation, or memory of information to ensure that their behavior and beliefs appear consistent.

Quiz self-check

1. During decision-making, an individual is influenced by the behavior or opinions of other group members and stays consistent with the group. This may be due to what psychological phenomenon?
2. When an individual changes their attitude or behavior under the influence of an authority within the group, this phenomenon is called what?
3. An individual perceives a contradiction between their own attitude and their behavior, and feels discomfort. This is due to what phenomenon?
4. To avoid social rejection, an individual chooses behavior consistent with the group. This may be due to what?
5. After one person posts an unverified message on a social network, it quickly triggers a large number of shares. This is an example of what effect?
6. In the absence of clear information, an individual makes decisions based on the behavior of others. This is due to what effect?
7. Watching a popular movie simply because "everyone is watching" may reflect what effect?
8. An individual abandons their own views under group influence and adopts the group's views. This may be due to what psychology?
9. An individual feels discomfort from cognitive inconsistency and tries to adjust their cognition to reduce that discomfort. This is due to what phenomenon?
10. In an emergency, an individual follows the escape route of the larger crowd, even without knowing the specific situation. This may be due to what effect?
11. If an individual changes their own attitude to adapt to group expectations, this behavior is due to what psychological phenomenon?
12. When an individual's behavior in a group is inconsistent with their true personal beliefs, this may be due to what psychological phenomenon?
13. When an individual is influenced by the social group in decision-making and acts inconsistently with their personal judgment, this may be due to what?
14. In the financial market, collective buying of a stock with no obvious reason may be due to what effect?

Answer Analysis

1. Conformity
   Explanation: To stay aligned with the group, an individual may abandon their own judgment or preferences and follow the group's behavior or opinions — a manifestation of conformity.

2. Conformity
   Explanation: When an authority figure or the majority within a group influences the individual through behavior or opinion, the individual may change their own attitude or behavior to match the group — another expression of conformity.

3. Cognitive Dissonance
   Explanation: When an individual's behavior conflicts with their inner beliefs, it can cause psychological discomfort. To reduce this discomfort, the individual may adjust their cognitions or behavior — a process known as cognitive dissonance.

4. Conformity
   Explanation: To avoid rejection by the social group, or to gain the group's approval, an individual may choose to abandon their own views or behavioral preferences and follow the group — a result of conformity at work.

5. Bandwagon Effect
   Explanation: When individuals lack sufficient information, they tend to imitate others' behavior — especially when they see large numbers of people making the same choice. This chain reaction of group behavior is called the bandwagon effect.

6. Bandwagon Effect
   Explanation: In situations of uncertainty or unclear information, individuals often base their decisions on the choices or behavior of others — a manifestation of the bandwagon effect.

7. Bandwagon Effect
   Explanation: Even without any direct recommendation or evidence about a film's quality, an individual still chooses to watch it because "everyone is watching." This imitation of social behavior is an example of the bandwagon effect.

8. Conformity
   Explanation: Under group pressure or influence, an individual may abandon their original views or stance and adopt the group's position — a reflection of conformity.

9. Cognitive Dissonance
   Explanation: When an individual faces a mismatch between behavior and inner beliefs, they may experience psychological discomfort and reduce it by adjusting their cognitions. This process is called cognitive dissonance.

10. Bandwagon Effect
    Explanation: In emergency or uncertain situations, people tend to follow the actions of the majority, even when the rationality of those actions is unclear — a manifestation of the bandwagon effect.

11. Conformity
    Explanation: An individual may change their attitude or behavior to adapt to group expectations — an adaptive process that reflects conformity.

12. Conformity
    Explanation: Even when an individual's true beliefs conflict with the group's, they may still display behavior consistent with the group because of group influence or pressure — a typical expression of conformity.

13. Conformity
    Explanation: When making decisions, an individual can be influenced by the social group and end up making choices that contradict their own judgment — a phenomenon reflecting conformity.

14. Bandwagon Effect
    Explanation: In financial markets, investors often make investment decisions based on other people's buying behavior, even without substantive analysis of the stock's value. This chain reaction of behavior is a manifestation of the bandwagon effect.