The Threshold-of-the-Room Effect

Percent Cooperation

by Discussion, Belief During Consideration of Options, & Actual Allocation

                   Believe Benefit Goes to Own Group      Believe Benefit Goes to Other Group  

                   Benefit Goes to    Benefit Goes to     Benefit Goes to    Benefit Goes to     
                   Own Group          Other Group         Own Group          Other Group         

No Discussion                                                                                    
                   37%                30%                 45%                20%                 


Discussion         79%                59%                 32%                30%