Social Psychology Key Figures. 1  Allport (1920) â Social Facilitation. 2  Bandura (1963) Social Learning Theory. 3  Festinger (1950) â Cognitive Dissonance. 4  Tajfel (1971) â Social Identity Theory. 5  Weiner (1986) â Attribution theory. 6  Milgram (1963) â Shock Experiment. 7  Haney, Banks, Zimbardo (1973) â Prison Study.
Founded in 2012 by two Stanford students, Snap is the Los Angeles-based technology and social media company behind messaging app Snapchat.
Snapchat had 161 million daily active users (DAUs) in the last month of the quarter that ended on December 31, Los Angeles-based Snap Inc. said today in the S-1 filing it submitted to the U.S. Securities and Regulatory Commission, kicking off the process of going public. Above: Snapchat user growth through the years.