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.
Eventually, geocachers who enjoy the sport begin to geocaches of their own for others to find. Geocaching got its start back in May 2000. Before that time, use of GPS satellites was limited to military and other special uses. On May 2, 2000, however, GPS access was expanded to the general public.