Kinship terms around the world

It’s often assumed that when babies say mama or papa (or similar) they are addressing or referring to their mother or father explicitly. Not so. In a 2012 post on mama/papa words around the world, I wrote:

Before I knew anything about language acquisition, I assumed that babies making these utterances were referring to their parents. But this interpretation is backwards: mama/papa words just happen to be the easiest word-like sounds for babies to make. The sounds came first – as experiments in vocalization – and parents adopted them as pet names for themselves.

These pet names, or nursery forms, in turn gave rise to our grown-up terms like mother and father – or rather, their ancient predecessors – according to Roman Jakobson’s 1959 paper ‘Why “Mama” and “Papa”?’ (PDF). The striking correspondence of nursery forms cross-lingually can be seen in a table from Larry Trask’s ‘Where do mama/papa words come from?’ (PDF):

The Great Language Muster is a project collecting data from hundreds of languages in an effort to update our knowledge of these and other kinship terms – how we address and refer to parents, grandparents, aunts, and uncles. It’s being run by UCL linguistics professor Andrew Nevins, whose research assistant Evan DeFrancesco emailed me about it.