title: The origins of duality of patterning in artificial whistled languages.
abstract: In human speech, a finite set of basic sounds is combined into a (potentially) unlimited set of well-formed morphemes. Hockett (1960) placed this phenomenon under the term 'duality of patterning' and included it as one of the basic design features of human language. Of the thirteen basic design features Hockett proposed, duality of patterning is the least studied and it is still unclear how it evolved in language. Recent work shedding light on this is summarized in this paper and experimental data is presented. This data shows that combinatorial structure can emerge in an artificial whistled language through cultural transmission as an adaptation to human cognitive biases and learning. In this work the method of experimental iterated learning (Kirby et al. 2008) is used, in which a participant is trained on the reproductions of the utterances the previous participant learned. Participants learn and recall a system of sounds that are produced with a slide whistle. Transmission from participant to participant causes the whistle systems to change and become more learnable and more structured. These findings follow from qualitative observations, quantitative measures and a follow-up experiment that tests how well participants can learn the emerged whistled languages by generalizing from a few examples.
authors: University of Amsterdam, 1012 VT Amsterdam, The Netherlands. t.verhoef@uva.nl.
authors: Tessa
authors: T
authors: Verhoef
keywords: combinatorial structure; cultural evolution; language evolution; phonology
references: Science. 1985 Jul 19;229(4710):279-82
references: 4012321
references: Lang Cogn. 2012 Nov;4(4):381-418
references: 23205149
references: Philos Trans R Soc Lond B Biol Sci. 2008 Nov 12;363(1509):3503-14
references: 18801717
references: Trends Cogn Sci. 2010 Sep;14(9):411-7
references: 20675183
references: Cogn Sci. 2007 Nov 12;31(6):961-87
references: 21635324
references: Proc Biol Sci. 1999 Oct 22;266(1433):2131-6
references: 10902547
references: Cogn Sci. 2005 Sep 10;29(5):737-67
references: 21702792
references: Proc Natl Acad Sci U S A. 2008 Aug 5;105(31):10681-6
references: 18667697
references: Sci Am. 1960 Sep;203:89-96
references: 14402211
references: Artif Life. 2003 Fall;9(4):371-86
references: 14761257
references: Psychon Bull Rev. 2006 Jun;13(3):361-77
references: 17048719
references: Annu Rev Neurosci. 1999;22:567-631
references: 10202549
references: Behav Brain Sci. 2008 Oct;31(5):489-508; discussion 509-58
references: 18826669
references: Cognition. 2009 Nov;113(2):226-33
references: 19740461
references: Science. 1971 Aug 13;173(3997):585-97
references: 17833100
references: Cognition. 2001 Mar;78(3):B53-64
references: 11124355
references: Science. 1987 Sep 4;237(4819):1195-7
references: 3629235
references: Cognition. 2010 Sep;116(3):444-9
references: 20615499
references: Psychon Bull Rev. 2008 Apr;15(2):453-7; discussion 458-62
references: 18488668
references: Nat Lang Linguist Theory. 2011 May;29(2):503-543
references: 22223927