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.
iPhone and Android, Free. Sure, Snapchat first came out in 2011, but it certainly came into its own this year â especially with the app's Chat 2.0 revision in March 2016. With that update, the free disappearing video messaging app laid the groundwork for all sorts of killer features, from geofilters to facial lenses.