Research Article

Morals and Markets

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Science  10 May 2013:
Vol. 340, Issue 6133, pp. 707-711
DOI: 10.1126/science.1231566

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  1. Fig. 1

    Market interaction erodes moral values, relative to individually stated preferences: fractions of subjects who are willing to kill a mouse for monetary amounts below or equal to 10 euros in the individual treatment, the bilateral market, and the multilateral market. For both markets, fractions are calculated using the lowest prices accepted by sellers in actually concluded trades. Error bars show standard deviations at the means. Differences between the individual treatment and markets are significant at the 1% level. Individual versus bilateral market: P < 0.01, n = 160 (two-sample test of proportions). Individual versus multilateral market: P < 0.01, n = 178 (two-sample test of proportions). The difference between markets is not statistically significant.

  2. Fig. 2

    Evolution of trading prices in the multilateral mouse market and the multilateral coupon market (means over all trades). The downward trend in prices in the mouse market is significant (P = 0.006, n = 297, random effects regression). No significant price trend is observed in the coupon market (P = 0.319, n = 233, random effects regression).

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