Research about the association between music and speech. Tonal languages, such as Mandarin, support theories of language developing out of a "protolanguage" comprised of sounds that were more similar to tones than words.
Article explores the findings of biologist Mark Pagel: some of the words most commonly used today may have derived from a common protolanguage. The Washington Post has an interactive feature with sound samples of some of the ultraconserved words: http://www.washingtonpost.com/wp-srv/special/national/words-that-last/.
Mark Pagel, at the University of Reading, talks about ultra-conserved words--words that have survived 10K years: I, ashes, woman, even possibly spit. He theorizes that such words derive from a common protolanguage.
British researchers say they have found 23 words that have persisted for a staggering 15,000 years. These "ultraconserved words" include some that you might expect (you, me, mother, man), others you might not (spit, worm, bark), and at least one somewhat heartwarming entry (give). Over the centuries, the words have retained the same meaning and almost the same sound.
The team claims that's because they all come from an ancient "mother tongue" that was used toward the end of the last ice age, the Guardian reports. They assert that the ancient language eventually formed seven language families, which in turn formed the 700 modern languages used by more than half of the planet today. To find the ultraconserved words, linguists looked for cognates-words that have similar meanings and sounds in different languages, like "father" (padre, pere, pater, pitar)-shared by all seven of the aforementioned language families. They then translated the cognates into what they believed the cognates' ancestral words (known as proto-words) would be, then compared those. They ultimately found 23 that were shared by at least four of the language families, including one (thou) that was shared by all seven.
Here are all 23 "ultraconserved words", listed by the number of language families in which they have cognates.
7 - thou
6 - I
5 - not, that, we, to give, who
4 - this, what, man/male, ye, old, mother, to hear, hand, fire ,to pull, black, to flow, bark, ashes, to spit, worm