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.
The answer is Sony Walkman in 1979. Post it - 1980's Mcintosh - 1984 P.S. Technically, the Post It Note was first launched in stores in 1977. They failed because nobody â¦knew what they were, however they were still the first item of the three to be launched in stores.