Epley, N., & Schroeder, J. (2014). Mistakenly seeking solitude. Journal of Experimental Psychology: General, 143, 1980-1999.
Short Summary: People prefer to sit in solitude in public settings (on buses, trains, cabs, and in waiting rooms) than to talk to a stranger, but when randomly assigned to talk to a stranger in these same settings, report greater happiness and no less productivity compared with sitting in silence or doing what they want (10 experiments).