Competition in Friendship 229Tesser, A., & Moore, J. (1990). Independent threats and self- evaluation maintenance processes.
Journal of Social Psychology, 130 , 677– 689.
Tesser, A., & Smith, J. (1980). Some effects of task relevance and friendship on helping: You
don’t always help the one you like. Journal of Experimental Social Psychology, 16 , 582– 590.
doi:10.1016/ 0022- 1031(80)90060- 8
Triplett, N. (1898). The dynamogenic factors in pacemaking and competition. American Journal of
Psycholog y, 9 , 507– 533.
Wang, Y., Yuan, B., Roberts, K., Wang, Y., Lin, C., & Simons, R. F. (2014). How friendly is a lit-
tle friendly competition? Evidence of self- interest and empathy during outcome evaluation.
International Journal of Psychophysiology, 91 , 155– 162. doi:10.1016/ j.ijpsycho.2013.10.009
Wentzel, K. (2005). Peer relationships, motivation, and academic performance at school. In
A. J. Elliot & C. S. Dweck (Eds.), Handbook of competence and motivation (pp. 279– 296).
New York, NY: Guilford.
Wiseman, J. P. (1986). Friendship: Bonds and binds in a voluntary relationship. Journal of Social and
Personal Relationships, 3 , 191– 211. doi:10.1177/ 0265407586032005