| 2002 | - | Adaptive Factors in the Evolution of Signaling Systems - Noble,Paolo,Bullock | :: | 3 |
| 2006 | - | Selective scenarios for the emergence of natural language - Szamado,Szathmary | :: | 1 |
| 2008 | - | Coevolution of human speech and trade - Horan,Bulte,Shogren | :: | |
| 2005 | - | Why talk: an Adaptationist Approach - Scott-Phillips | :: |