Since my day-to-day involves thinking about & talking about language, the thought often crosses my mind as to when humans started to use it. To invent it, if you will. A peer‑reviewed research article by Miyagawa, DeSalle, Nóbrega, Nitschke, Okumura & Tattersall in Frontiers in Psychology offers one of the clearest lower boundaries yet: the cognitive capacity for language must have been present in Homo sapiens at least 135,000 years ago -moving the approximate date back by about 60–95 thousand years compared with traditional estimates.
The study
The authors review 15 genetic studies that estimate when the earliest branching population within Homo sapiens –the Khoisan lineage– split from the original stem population. Their logic is simple: if every population descending from that split has full linguistic capacity, then the ability for language must have existed before the split.
Rather than examining the technicalities of genetic markers or statistical models, the authors focus on the median estimates across these studies to identify a consistent lower boundary for when humans must have been “language‑ready”.
The findings
- Across the studies, the median estimates cluster around 135kya (in deep‑time research, you’ll often see kya used to represent 1,000), giving a stable lower boundary for when linguistic capacity must have been present.
- Because all modern human populations share full linguistic capacity, the authors argue that language‑ready cognition predates this divergence.
- Archaeological evidence shows symbolic behaviour becoming widespread around 100kya -engraved ochres, beads, pigments, geometric motifs- suggesting language may have helped organise & systematise emerging cultural practices.
- The authors propose that language acted as a trigger for the consolidation of modern human behaviour: once linguistic capacity was present, symbolic culture accelerated & became normative across populations.
In other words, this research challenges the older “Upper Palaeolithic revolution” narrative that places language emergence around 40–70kya. It aligns with gradualist accounts -in which language evolved step by step over a long period- (eg Pinker & Bloom– yes, that Pinker) while intersecting with saltational views -in which language appeared following a sudden leap (Bickerton; Berwick & Chomsky– yes, that Chomsky). It also echoes work by Dediu & Levinson suggesting Neanderthals may have had substantial linguistic abilities.
I like to picture a small group of early Homo sapiens planning movement across a landscape. Without structured language, coordination relies on gesture, imitation & shared routines. With even a proto‑system – “tomorrow hunt river group” – planning becomes more precise, roles become clearer & cultural practices stabilise. Over generations, this scaffolding could support the emergence of symbolic norms like ornamentation or ritual.
Teacher takeaways?
Clearly such studies offer us no classroom insights, but, as always, they offer us food for thought.
Humans have been “language‑ready” far longer than we’ve been farming, writing or teaching. Learners bring deep cognitive architecture shaped over millennia.
Structured communication emerges gradually through repetition & shared attention -a reminder that classroom routines matter (a stretch, I know).
Language & culture co‑evolve: symbolic behaviour grows when communication becomes more systematic. Classroom interaction can mirror this dynamic.
When do you imagine the first language teachers were required?
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