[1] J.M. Baldwin. A new factor in evolution. American Naturalist, 30:441--451, 1896.

[2] Richard Belew. Evolution, learning, and culture: computational metaphors for adaptive algorithms. Complex Systems, 4:11--49, 1990.

[3] R.C. Berwick and A.S. Weinberg. The Grammatical Basis of Linguistic Performance: Language Use and Acquisition. MIT Press, 1984.

[4] Ted Briscoe. Language acquisition: the bioprogram hypothesis and the Baldwin Effect. MS, Computer Laboratory, University of Cambridge, 1997.

[5] Noam Chomsky. Knowledge of Language. Praeger, 1986.

[6] Robert Clark. Internal and external factors affecting language change: A computational model. Master's thesis, University of Edinburgh, 1996. In preparation.

[7] Robin Clark. The selection of syntactic knowledge. Language Acquisition, 2:85--149, 1992.

[8] Robin Clark and Ian Roberts. A computational model of language learnability and language change. Linguistic Inquiry, 24:299--345, 1993.

[9] Bernard Comrie. Language Universals and Linguistic Typology. Basil Blackwell, 1981.

[10] William Croft. Typology and universals. Cambridge University Press, Cambridge, 1990.

[11] Matthew Dryer. The Greenbergian word order correlations. Language, 68:81--138, 1992.

[12] Janet Fodor. Unambiguous triggers. Linguistic Inquiry, 1997. To appear.

[13] E. Gibson and K. Wexler. Triggers. Linguistic Inquiry, 25:407--454, 1994.

[14] Joseph Greenberg. Some universals of grammar with particular reference to the order of meaningful elements. In Joseph Greenberg, editor, Universals of Language, pages 73--113. MIT Press, 1963.

[15] Liliane Haegeman. Introduction to Government and Binding Theory. Blackwell, 1991.

[16] John A. Hawkins. Explaining language universals. In John A. Hawkins, editor, Explaining Language Universals. Basil Blackwell, 1988.

[17] John A. Hawkins. A parsing theory of word order universals. Linguistic Inquiry, 21:223--261, 1990.

[18] John A. Hawkins. A performance theory of order and constituency. Cambridge University Press, 1994.

[19] G. Hinton and S. Nowlan. How learning can guide evolution. Complex Systems, 1:495--502, 1987.

[20] James Hurford. Language and Number: the Emergence of a Cognitive System. Basil Blackwell, Cambridge, MA, 1987.

[21] Simon Kirby. Adaptive explanations for language universals: a model of Hawkins' performance theory. Sprachtypologie und Universalienforschung, 47:186-210, 1994.

[22] Simon Kirby. Constraints on constraints, or the limits of functional adaptation. To appear in: Functionalism and Formalism, 1996.

[23] Simon Kirby. The Emergence of Universals: Function, Selection and Innateness. University of Edinburgh, 1996. PhD thesis.

[24] Simon Kirby. Competing motivations and emergence: explaining implicational hierarchies. Language Typology, 1:5--32, 1997.

[25] Simon Kirby. Fitness and the selective adaptation of language. In J. Hurford, C. Knight, and M. Studdert-Kennedy, editors, Evolution of Language: Social and cognitive bases for the emergence of phonology and syntax. 1997. To appear.

[26] Simon Kirby and James Hurford. The evolution of incremental learning: Language, development and critical periods. Occasional Paper EOPL-97-2, Department of Linguistics, University of Edinburgh, Edinburgh, 1997.

[27] Eric H. Lenneberg. Biological Foundations of Language. Wiley, New York, 1967.

[28] Edith Moravcsik, editor. Functionalism and formalism in linguistics: proceedings of the 23rd UWM linguistics symposium. Benjamins, 1997. In preparation.

[29] Daniel Nettle. The Evolution of Linguistic Diversity. PhD thesis, University College London, 1996.

[30] Frederick J. Newmeyer. Functional explanation in linguistics and the origins of language. Language and Communication, 11:3--28, 1991.

[31] Frederick J. Newmeyer. Language Form and Language Function, chapter Langauge Typology and its Difficulties. 1997. In preparation.

[32] Partha Niyogi and Robert Berwick. The logical problem of language change. Technical Report AI Memo 1516 / CBCL Paper 115, MIT AI Laboratory and Center for Biological and Computational Learning, Department of Brain and Cognitive Sciences, 1995.

[33] H. Van Riemsdijk and E. Williams. Introduction to the Theory of Grammar. MIT Press, 1986.

[34] William Turkel. The learning-guided evolution of natural language. Manuscript, University of British Columbia, 1994.

[35] William Turkel. Noise-induced enhancement of parameter setting. Submitted to Linguistic Inquiry, 1997.