"Pretty much everyone interested in dinosaurs, in the history of life, or in such matters as the evolution of intelligence and/or brain size, will be familiar with the various speculations on ‘humanoid dinosaurs’ that have made their way into the literature." -
Tetrapod Zoology on Dinosauroids [more inside]
posted by brundlefly
on Oct 30, 2012 -
23 comments
Genes Reveal Recent Human Brain Evolution. Two important
new papers in the journal
Science (available
here) from the evolutionary geneticist and rising star, Bruce T. Lahn (see
this recent profile from
The Scientist), are potentially the tips of some very large icebergs. The papers document how two genes related to brain properties that underwent strong selection during the course of hominid evolution, have
continued undergoing strong selection since the emergence of anatomically modern man. The papers wonderfully illustrate how biological evolution is an
ongoing process as well as the
artificial distinction between “micro” and “macro” evolution, and promise to be controversial for two reasons: First, the brain genes underwent the strongest selection during
two periods of cultural and technological efflorescence (roughly 37,000 and 5,800 years ago). Second, the genes are distributed very differently in modern human population groups, existing at very high frequencies in some groups and being very rare in others, ensuring that the modern function of these genes will be a source of more research and much impassioned debate. More
observations from anthropologist John Hawks.
posted by Jason Malloy
on Sep 8, 2005 -
54 comments
Language started with emotional signaling. That's the thesis of a new book,
The First Idea: How Symbols, Language, And Intelligence Evolved From Our Primate Ancestors To Modern Humans, by Stanley I. Greenspan and Stuart G. Shanker.
Lived emotional experience is key to language learning, the authors suggest. "Mathematicians and physicists may manipulate abstruse symbols representing space, time, and quantity, but they first understood those entities as tiny children wanting a far-away toy, or waiting for juice, or counting cookies. The grown-up genius, like the adventurous child, forms ideas through playful explorations in the imagination, only later translated into the rigor of mathematics."
The book is very ambitious, and I don't think we'll ever
know where language came from, but this sounds like a more fruitful line of thinking than Chomsky's
deus ex machina "language gene" mutation.
posted by languagehat
on Sep 29, 2004 -
32 comments