Sometimes people act unfair. 
Sometimes people judge others too fast. 
Some people think they are being smart. But they are just using old ideas. This can make life hard for others. It can even make people feel very sad.
We can work to fix this. One way is to spend time with new people. Meeting others can help us be more fair. Learning about new friends is a great way to change.
Prejudice is when people form feelings about others too soon. This often happens before they have real experience with a person. People might judge others based on their race, age, or religion. They might also judge based on things like wealth or how someone looks. 
In the 1920s, some researchers used bad studies to claim one race was better than others. Later, in the 1930s and 1940s, ideas began to change. People saw how much harm the Nazis caused. A thinker named Theodor Adorno said some people are prejudiced because they are very rigid. They follow strict rules and see the world in black and white.
Gordon Allport studied this in 1954. He said the human mind uses categories to think. He believed that meeting people from different groups can help. This is called the contact hypothesis. Other studies show that prejudice can come from wanting to favor one's own group. It can also happen when groups compete for things like food or jobs.
Prejudice can make people feel very sad or depressed. However, learning about others can help us be more fair.
Prejudice is a feeling toward a person based on the group they belong to. This feeling often happens before a person has any real experience with someone. People might judge others based on many different things. These can include race, religion, age, or gender. They might also judge based on wealth, education, or even music tastes. 
Scientists study prejudice to see how it works in the mind. In the 1920s, some researchers used bad studies to claim one race was better than others. This was wrong, but it shaped how people thought for a while. By the 1930s and 1940s, views began to change. People saw the harm caused by the Nazis. A thinker named Theodor Adorno said some people are prejudiced because they have an "authoritarian personality." He said these people are rigid thinkers who see the world in black and white.
In 1954, Gordon Allport wrote a famous book about this topic. He said the human mind must use categories to think and stay organized. This process of making categories is a natural part of being human. Allport also shared an idea called the contact hypothesis. He believed that when different groups spend time together, prejudice can go down. The way people meet matters a lot for this to work. This shows that learning about others is a powerful tool.
Many different theories explain why prejudice happens. Some researchers say it comes from wanting to favor your own group. This is called "ingroup favoritism." Others say it happens when groups compete for things like jobs or food. One study used two summer camps to show this. The camps became hostile after competing for small prizes. However, they worked together better once they had a common goal. Another idea is that people feel threatened by different cultural values. This can include feeling uneasy or anxious around new groups.
Prejudice can have a very real impact on how people feel. It can be a major cause of depression for many people. This can happen to those who are targets of prejudice. It can also happen to people who hold prejudiced views against themselves. Some thinkers, like Paul Bloom, say that categorizing things is necessary for survival. We use categories to make predictions about the world around us. While prejudice can be irrational, the act of categorizing is a natural human way to learn. Understanding these patterns helps us work toward a fairer world.
Prejudice is a complex psychological phenomenon involving an affective feeling toward a person. This feeling is based on their perceived membership in a specific social group. It often involves a preconceived, usually unfavorable, evaluation of an individual. People may judge others based on many characteristics. These include race, ethnicity, gender identity, and religion. Other factors include age, disability, social class, and even music tastes. Prejudice is often described as an unreasonable attitude that resists rational influence. It can lead to the use of scapegoating. This can endanger individuals and the international community. 
The word itself has a long history. It has been used in Middle English since around the year 1300. The term comes from the Old French word "préjudice." This traces back to the Latin "praeiudicium." This Latin term combines "prae," meaning before, and "iudicium," meaning judgment. Essentially, it refers to a judgment made before actual experience occurs. This definition aligns with Gordon Allport's view. He stated that prejudice is a feeling held prior to actual experience.
Psychological research into prejudice began in the 1920s. Early studies were often used to support white supremacy. One 1925 article reviewed 73 studies on race. It claimed these studies showed the mental superiority of the white race. This was a deeply flawed era of research. By the 1930s and 1940s, perspectives began to shift. This change was driven by concerns regarding anti-Semitism and Nazi ideology. Theorists began to view prejudice as a pathological condition. Theodor Adorno studied the "authoritarian personality" during this time. He believed such people were rigid thinkers who enforced strict social hierarchies.
In 1954, Gordon Allport published "The Nature of Prejudice." He argued that categorical thinking is a natural human process. The human mind uses categories to organize information and live orderly lives. However, he also proposed the "contact hypothesis." This theory suggests that contact between different ethnic groups can reduce prejudice. The specific circumstances of the contact are very important for success. Later, in the 1970s, research focused on "ingroup favoritism." Marilyn Brewer suggested prejudice might stem from reserving positive emotions for one's own group. This is known as the "ingroup" versus the "outgroup."
Several specific cognitive errors contribute to prejudice. One is the "ultimate attribution error," described by Thomas Pettigrew in 1979. This occurs when people attribute negative outgroup behavior to a person's character. Conversely, they might attribute positive outgroup behavior to luck or a fluke. Another concept is the "out-group homogeneity effect." This is the perception that all members of an out-group are very similar. Researchers Quattrone and Jones demonstrated this using students from Princeton and Rutgers. Participants predicted much higher similarity among rival students than their own classmates.
Modern theories offer even more detail on these social conflicts. The "justification-suppression model" explains a conflict within the individual. People want to express prejudice but also want a positive self-concept. This creates a search for justifications to avoid feeling bad about themselves. "Realistic conflict theory" focuses on competition for limited resources. The "Robber's Cave experiment" showed how competition for small prizes created hostility. However, cooperation toward a common goal lessened that hostility. Finally, "Integrated Threat Theory" (ITT) identifies four specific types of perceived threats. These are realistic threats, symbolic threats, intergroup anxiety, and negative stereotypes.
Social dominance theory views society as a series of group-based hierarchies. Dominant groups may create "legitimizing myths" to justify their position. These myths can include biased hiring practices or merit norms. Such structures help maintain control over scarce resources like housing or jobs. The impact of prejudice is also deeply personal and mental. It can be a central factor in causing depression. This affects those who are targets of prejudice and those who hold it. Even self-directed prejudice can lead to significant mental health struggles.
Some thinkers, like Paul Bloom, suggest a different perspective on categorization. He argues that while prejudice is irrational, the process of categorizing is natural. Humans use categories to make predictions about the world to survive. This allows for normal interaction and quick decision-making. However, researchers note that the study of prejudice has been too narrow. Traditionally, it has focused mostly on groups receiving unjust treatment. New research aims to look at the actual psychological mechanisms behind all attitudes. This helps create a more accurate analysis of human social behavior.
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