Shaun Nichols’ "Rational Rules" is the most creative and interesting response to moral nativism to appear since the naturalistic turn in moral psychology that began several decades ago. Nichols accepts the basic nativist observation that the moral rules children acquire are surprisingly rich...

The black box method was developed as an "asocial control" to allow for payoff-based learning while eliminating social responses in repeated public goods games. Players are told they must decide how many virtual coins they want to input into a virtual black box that will provide uncertain...

We develop a rational model of trading behavior in which the agents gradually learn about their ability to trade, and exit after poor trading performance. We demonstrate that it is optimal for experienced traders to "procrastinate" and postpone exit even after bad results. We embed this "optimal...