Social psychology experiments can explain how thoughts, feelings and behaviors are influenced by the presence of others.
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Typically social psychology studies investigate how someone's behavior influences a groups behavior or internal states, such as attitude or self-concept.
Obedience to Authority
"I was only following orders"
Legal defence by a Nazi leader at the Nuremberg trial following World War II
Milgram's Lost Letter Experiment
Classic social psychology experiments are widely used to expose the key elements of aggressive behavior, prejudice and stereotyping. Social group prejudice is manifested in people's unfavorable attitudes towards a particular social group. Stanley Milgram's Lost Letter Experiment further explains this.
Observational Role Learning
Behaviorists ruled psychology for a long time. They focused on how individuals learn by trying and failing. Albert Bandura thought that humans are much more than "learning machines". He thought that we learn from role models, initiating the (bandura) social cognitive theory. It all started with the Bobo Doll Experiment.
Helping Behavior - Good Samaritan
Knowing the story of the Good Samaritan makes you wonder what made the Samaritan help the stranger, and why did he not get help from the priest or the Levite? The Good Samaritan Experiment explores causes of not showing helping behavior or altruism.
Cognitive Dissonance Experiment
The Cognitive Dissonance Experiment by Leon Festinger assumes that people hold many different cognitions about their world and tests what happens when the cognitions do not fit. See also the more in depth article about the Cognitive Dissonance Experiment.
Groups and Influence On Opinion
The Social Judgment Experiment was designed to explore the internal processes of an individual's judgment and intergroup discrimination, how little it takes for people to form into groups, and the degree to which people within a group tend to favour the in-group and discriminate the out-group.
The Halo Effect was demonstrated by Nisbett and Wilson's experiment. It fits the situation of Hollywood celebrities where people readily assume that since these people are physically attractive, it also follows that they are intelligent, friendly, and display good judgment as well. This also greatly applies to other well-known people such as politicians.
Wegner's Dream Rebound Experiment
According to studies, thoughts suppressed may resurface or manifest themselves in the future in the form of dreams. Psychologist Daniel M. Wegner proves this in his experiment on effects of thought suppression.
Everyone's got their own biases in each and every occasion, even when estimating other people behaviors and the respective causes. One of these is called the false consensus bias. Psychologist Professor Lee Ross conducted studies on setting out to show how false consensus effect operates.
Understand and Belief
Daniel Gilbert together with his colleagues put to test both Rene Descartes' and Baruch Spinoza's beliefs on whether belief is automatic or is a separate process that follows understanding. This argument has long been standing for at least 400 years before it was finally settled.
The overjustification effect happens when an external incentive like a reward, decreases a person's intrinsic motivation to perform a particular task. Lepper, Greene and Nisbett confirmed this in their field experiment in a nursery school.
Also called unintentional mirroring, the chameleon effect usually applies to people who are getting along so well, each tend to mimic each other's body posture, hand gestures, speaking accents, among others. This was confirmed by the Chartrand and Bargh experiments.
Confirmation bias is also known as selective collection of evidence. It is considered as an effect of information processing where people behaves to as to make their expectations come true. People tend to favor information that confirms their preconceptions or hypotheses independently of the information's truthness or falsity.
Choice blindness refers to ways in which people are blind to their own choices and preferences. Lars Hall and Peter Johansson further explain this phenomenon in their study.
The Clark Doll Test illustrates the ill effects of stereotyping and racial segregation in America. It illustrated the damage caused by systematic segregation and racism on children's self-perception at the young age of five.
Changing Behaviour When Being Studied
The Hawthorne Effect is the process where human subjects of an experiment change their behavior, simply because they are being studied. This is one of the hardest inbuilt biases to eliminate or factor into the design.