Diseases will pose a huge threat to human survival and development。Facing the threat of bet365 ohio promo code，Human beings are not passive victims。In the long process of evolution，Humans have gradually developed and improved their own physiological immune system，To fight against pathogens invading the body。But in the face of bet365 ohio promo code，Human physiological immune system is not perfect。On the one hand，The functioning of the physiological immune system consumes a large amount of resources，This will inevitably affect the normal operation of other body functions。On the other hand，The physiological immune system is relatively lagging behind in functioning，Human beings still face the risk of being killed by diseases。So，In the process of fighting the bet365 ohio promo code，Humans have evolved a behavioral immune system。This system is an outpost against bet365 ohio promo code threats，Is humanity’s first line of defense against bet365 ohio promo code threats。

　　Recognize and respond to bet365 ohio promo code threat cues

　　The behavioral immune system is a collection of psychological mechanisms，Its function is to prevent individuals from coming into contact with people or objects that may pose a bet365 ohio promo code threat。Individual recognizes clues that bet365 ohio promo code threats may exist in the environment，The behavioral immune system will be activated，When the corresponding psychological mechanism is activated，The individual will make a series of reactions to avoid these people or objects in the environment，Thus preventing or minimizing the intrusion of pathogens into the body。It can be seen from this，The work of the behavioral immune system is mainly divided into two parts: identifying and responding to bet365 ohio promo code threat cues。

Due to bacteria、Virus、Parasites and other parasites are extremely difficult to detect，The objects recognized by the behavioral immune system are not the pathogens that can easily make individuals infected with diseases，Clues that mean the existence of these pathogens，Such as a dirty environment、The smell of corruption、Sick appearance, etc.。But，Because the existence of pathogens and the external manifestations of their carriers are not in a one-to-one correspondence，Plus there are many types of pathogens，So individuals cannot accurately identify all clues indicating the presence of pathogens。Therefore，Individuals follow smoke detection principles when identifying bet365 ohio promo code threat cues，It is characterized by over-sensitivity and over-generalization。

Whether to implement appropriate responses after identifying bet365 ohio promo code threat cues is a question that requires weighing the pros and cons，Because executing the corresponding reaction requires paying a certain price。Therefore，Individuals follow the principle of functional resilience when responding to bet365 ohio promo code threat cues，Its characteristics are flexible、Resilient，The purpose is to avoid the threat of bet365 ohio promo code，Reduce the corresponding costs as much as possible。Research shows，When the behavioral immune system responds to bet365 ohio promo code threats，Will be affected by individual health、Adjustment of clues such as the current environmental cues regarding the threat level of pathogens and the pathogen load in the area。

　　Individuals bet365 ohio promo code make a series of responses

　　When the behavioral immune system is activated by cues of a bet365 ohio promo code threat，The individual will have a series of reactions，Including emotional disgust、Cognitive bias and behavioral conservatism，To avoid the invasion of individuals by pathogens。

Clues in the environment that indicate the presence of germs，Such as body excretion、Rotten food or red and swollen skin often cause physical disgust in individuals。The disgust reaction is just a signal to the individual to stay away from these objects。Discovered by Prokop et al.，For those subjects with lower self-reported health，Molluscs such as parasites that may transmit diseases will cause a strong sense of disgust and fear。Since the behavioral immune system recognizes cues of bet365 ohio promo code threat following smoke detection principles，Those related to body excretions、Similar stimuli such as rotten food can also induce disgust reactions in individuals。Research findings by Rozin et al.，Plastic cockroaches and poop-like gummy candies can also make people sick。

Although prejudice is a negative cognition，But to a certain extent, it can keep individuals away from people or things that may carry pathogens，Thereby reducing the risk of contracting diseases。In the process of evolution，Because the living environment of the members in the group is the same，And most of them are related by blood，So the pathogens carried by members of the group are similar，The probability of bet365 ohio promo code infection caused by contact and interaction with each other is low。Members outside the group often carry new pathogens that members within the group are not immune to，And the intervention of out-group members may also destroy the social barrier formed within the group to resist the threat of bet365 ohio promo code。Therefore，Individuals will reduce the risk of contracting diseases by favoring in-group members and rejecting out-group members。When faced with the threat of bet365 ohio promo code，In addition to showing in-group favoritism，Sometimes also shows in-group derogation。When the pathogen load rate in the population is too high，Members of groups that interact frequently may accelerate the spread of diseases，At this time, out-group members may be safer for the individual。Therefore，Individuals will show rejection to members of the group、Tendency to favor out-group members。It can be seen from this，Whether it is in-group preference or in-group derogation，Both are responses of the behavioral immune system to bet365 ohio promo code threats。

Face the threat of bet365 ohio promo code，The behavioral immune system typically employs conservative behavioral responses。Miller et al. discovered through push-pull rocker experimental design，Individuals who have been recently ill will more quickly engage in avoidance behavior towards those who have been disfigured，Push the joystick。Conformity enables people to effectively learn social norms to combat bet365 ohio promo code threats。Therefore，In the process of evolution，Herd behavior has gradually become a response of the behavioral immune system to bet365 ohio promo code threats。In other words，Under the threat of bet365 ohio promo code，People will be more inclined to follow the herd。Research findings by Wu and others，Compared to control conditions，Under germ activation conditions，The subjects will be more inclined to show conformity behavior in the evaluation task of unfamiliar abstract paintings，That is, the subjects’ ratings will be closer to the public ratings randomly provided by the experimenter。

　　Form a bet365 ohio promo code culture that reduces infectious diseases

If people in a certain area need to use the behavioral immune system to defend against bet365 ohio promo code threats for a long time，Then this collective reaction of people in the area will inevitably form a fixed social norm，This will gradually form a social culture that is conducive to reducing infectious diseases。

Personality differences in different regions are largely related to local pathogen load rates。In areas with high bet365 ohio promo code threat，Lower extraversion and openness help individuals avoid contact with more strangers，Also helps individuals comply with social norms，These can reduce an individual’s risk of contracting the bet365 ohio promo code。Study by Schaller et al. provides support for this view，That is, the degree of bet365 ohio promo code threat in different regions has a significant negative relationship with the degree of extroversion and openness of people in the region。

People living in areas with higher pathogen loads are more likely to develop collectivist values。Because collectivism emphasizes the strict division between in-group and out-group，And tend to prefer members of the in-group、Exclusion of out-group members，Also pay attention to obedience to bet365 ohio promo code norms，These help reduce the risk of contracting diseases。Fincher et al.’s research findings，There is a significant positive relationship between the pathogen load rate in a region and multiple indicators of collectivism in the region，That is, areas with higher pathogen load，The easier it is to form a collectivist culture。

　　It has reference significance for bet365 ohio promo code prevention and control

The behavioral immune system plays a sentinel role in defense against bet365 ohio promo code threats at both individual and sociocultural levels。We should fully realize the positive and negative effects of the behavioral immune system in bet365 ohio promo code prevention and control。

From an individual level，During the period of high bet365 ohio promo code prevalence，Pathogen load rate will be high。At this time, the individual’s behavioral immune system will follow the smoke detection principle，Sensitively identifies cues in the environment as bet365 ohio promo code threats，This will help individuals protect themselves，To reduce the risk of contracting diseases。But，As the bet365 ohio promo code epidemic gradually comes under effective control，If individuals still use smoke detection principles to identify bet365 ohio promo code threats，It will inevitably cause excessive tension and anxiety in oneself，In turn affecting normal life。Therefore，During the period of low bet365 ohio promo code prevalence，Individuals should give full play to the functional flexibility of the behavioral immune system，Adjust your bet365 ohio promo code protection measures at any time according to the actual situation，Minimize the impact of bet365 ohio promo code prevention and control on normal life。

From a social perspective，Collectivist culture has a social barrier function against the threat of bet365 ohio promo code。Collectivist culture advocates "everyone for one"，I am for everyone”，Emphasis on personal obedience to society。Therefore，In collectivist countries or regions, it will be more conducive for the behavioral immune system to play the outpost role in preventing and controlling diseases，However, individual bias due to behavioral immune system defense against bet365 ohio promo code threats should be avoided，And the generalized prejudice against a certain social group，Such as the disabled group、Obese people, etc.。This not only hinders bet365 ohio promo code prevention and control，It is even more detrimental to social harmony and stability。Therefore，We should make the behavioral immune system work rationally，Avoid social prejudice caused by bet365 ohio promo code prevention and control。

　　(Author’s unit: Department of Psychology, Zhejiang Normal University)