| 2002 | - | On the nature and evolution of the neural bases of human language - Lieberman | :: | 6 |
| 2003 | - | Linguistic differences and language design - Baker | :: | 4 |
| 2007 | - | Symbols are not uniquely human - Ribeiro,Loula,Araujo,Gudwin,Queiroz | :: | 1 |
| 2008 | - | Coevolution of human speech and trade - Horan,Bulte,Shogren | :: | |
| 2006 | - | Differences and similarities between the natural gestural communication of the great apes and human children - Pika,Liebal | :: |