http://dx.doi.org/10.1371/journal.pone.0083454 (Publisher version)
Wright, N. D., Symmonds, M., Morris, L. S., & Dolan, R. J. (2013). Dissociable influences of skewness and valence on economic choice and neural activity. PLoS ONE, 8(12): e83454. doi:10.1371/journal.pone.0083454.