Gordon Allport defined social psychology as “the scientific investigation of how the thoughts, feelings and behaviours of individuals are influenced by the actual, imagined or implied presence of others”.
Cognition and attitudes in social psychology include understanding how we represent the world, including the social world, and how we form attitudes about objects, including social objects.
Behaviours in social psychology include understanding how and why we change our actions in the presence of others, and how most citizens obey the law, but can turn into a mob.
Asch’s findings showed that in 36.8% of the trials conformity to the wrong judgements of the majority was observed, 5% showed conformity on all trials, 76.4% gave a wrong answer at least once, and 23.6% remained completely independent.
Group size matters in social influence, with influence increasing dramatically when majority increases, and decreasing when there is another person who disagrees, as per a meta-analysis of 133 studies in 17 countries by Bond & Smith, 1996.
Low levels of self-esteem are associated to higher conformity levels, at least when the task is specific self-esteem, as per Campbell, Tesser, & Fairey, 1986.
Informational influence occurs when individuals see others as a source of information, believe that other people’s interpretations of a situation are more correct, and desire to be right or accurate.
Contemporary examples of conformity include the public acceptance of the norm in situations such as ambiguous situations, when others are perceived as experts, and during a crisis or when there is no time to think.