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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Top Cogn Sci. 2016 Mar 17;8(2):393–407. doi: 10.1111/tops.12201

Figure 1.

Figure 1

In Evo-Devo accounts, language develops as bidirectional and ongoing interactions between genes, biology (which includes a range of processes not shown like gene expression, epi-genetics, protein transcription, brain organization), cognitive/language processes, the environment and broader culture. Inheritance is possible at each level, and selection operates to tune the entire developmental system across generations.