Accidental outcomes guide punishment in a "trembling hand" game.

There was a significant effect of selfish intention (β 3 = −1.85, t = −3.25, p<0.01), but no significant effect of generous intention (β 4 = 0.75, t = 1.02, p = 0.31), and a marginally significant interaction between stingy intent and stingy outcome (β 5 = −3.03, t = −1.91, p = 0.059) but no significant interaction between generous intention and generous outcome (β 6 = −0.39, t = −0.29, p = 0.77).

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