The prisoners’ dilemma with actual prisoners

This is from a new research paper by Menusch Khadjavi and Andreas Lange:

We compare female inmates and students in a simultaneous and a sequential Prisoner’s Dilemma. In the simultaneous Prisoner’s Dilemma, the cooperation rate among inmates exceeds the rate of cooperating students. Relative to the simultaneous dilemma, cooperation among first-movers in the sequential Prisoner’s Dilemma increases for students, but not for inmates. Students and inmates behave identically as second movers. Hence, we find a similar and significant fraction of inmates and students to hold social preferences….

The blog post and link to research is here, hat tip goes to @Noahpinion.