See also:

• Science: Social Sciences: Cognitive Science: Culture, Cognition, and Evolution  (15)

• Evolution of Communication - An international multidisciplinary academic journal. Contents and abstracts from first three issues.
• The Extended Mind: Understanding Language and Thought in Terms of Complexity and Chaos Theory - Robert K. Logan, Professor of Physics, argues that the origins of speech and the human mind emerged simultaneously as the bifurcation from percepts to concepts.
• Lingua ex Machina: Reconciling Darwin and Chomsky with the human brain - William Calvin and Derek Bickerton offer three ways for getting from ape behaviors to syntax. They focus on the transition from simple word association in short sentences (protolanguage) to longer recursively structured sentences (requiring syntax).
• Linguists Debating Deepest Roots of Language - The debate on Nostratic- the "Mother Tongue." The New York Times, June 27, 1995.
• NOVA Online-Transcripts-In Search of the First Language - There are surprising similarities among the languages of the world. Could it be that at one time long ago, we all spoke the same language?
• Pre-Nostratic Pronouns - by Patrick C. Ryan, Mother Tongue 11, September 1990.
• Proto-Language - An investigation of the earliest language of man. Comparative studies of the Proto-Language and various language families and languages currently considered to be isolated.
• SAFi etymology. Indo-European, Nostratic or Eurasian ? - SAFi is a lexeme of several groups of languages such as Indo-European, Semito-chamitic, ouralo-altaic and niger-kordofanian. Its distribution consolidates historical linguistic theories of Nostratic or Eurasian roots previous to the Indo-European one (-7000 years).
• TheTower of Babel - A project that aims at tracing the origin of the world's current 6,000 languages to a dozen or so protolanguages spoken around the 12th - 9th millennia before Common Era.
• Was Nostratic A Real Language? - On the family tree of languages, no one is quite sure whether Nostratic is a real branch or a just a shadow that has fooled some linguistic researchers.