👉 Physio-socio-linguistic theory (PSL) is a psychological and sociological perspective on language acquisition, which emphasizes the role of physical environment in shaping language acquisition. It was developed by linguist Carol Sullivant and psychologist Richard B. Friston. The term "physiosociological" comes from the combination of physio- and sociology, referring to the physical environment as well as social factors that influence language development. Physio-socio-linguistic theory suggests
