An experimental game tested a rationalistic theory of compliance to threats, which assumes the following: (1) The greater the credibility of the threat source the more compliant the target (subject). (2) The credibility of the threat source is determined by (a) the cost to the source of carrying...

The effects of two dosages of a widely used tranquilizer on strategic choice behavior in the Prisoner's Dilemma are reported relative to a placebo control group and a no-capsule control group. Present results are compared with those from an earlier study of drug effects on gaming by Hurst et al....