@article {310300,
	title = {The development of empathy in twins.},
	journal = {Developmental Psychology},
	volume = {28},
	year = {1992},
	pages = {1038-1047},
	chapter = {1038},
	author = {Zahn-Waxler, C. and Robinson, J. L. and Emde, R. N.}
}
