Consider broadening your search from psychology to include
Anthropology. True that psychology purports to identify how the human mind acquires and uses information.
Anthropology studies humans, our physical structure and human culture, most defitiely including language and how children acquire language.
Take the case of a 'feral child' similar to Edgar Rice Burroughs's fictional Lord Greystoke but raised by a remote African tribe instead of anthropomorphic chimpanzees. Upon returning to England, a psychologist would note Greystoke's inadequate assimilation of contemporary British norms, halting language skills and aggressive tendencies; in other words, compare him to "normal" Englishmen.
A trained cultural anthropologist or linguist would visit remote Africa, live among Tarzan's tribe, learn and document local languages, eat their foods and participate in their society, even as an outsider. The amateur sleuth immediately recognizes the problem with outside anthropologists changing this hypothetical remote tribe, but 'cultural contamination' already occurred with outside contact. Anthropologists seek to document what exisits. Learning local languages remains a hallmark for understanding culture.
Psychology foundationally divides among Freudians promoting talk therapy as promulgated by Sigmund Freud, gestaltists with early work by Carl Jung, and behavorists such as B.F. Skinner and many modern medical researchers into the human mind.
Anthropology tends to divide among physical anthropologists including now famous
forensics, and cultural anthropologists who study ethnography, linguistics, social customs and group behavior. Considerable overlap exists as does the tendency for anthropology -- study of humans -- to absorb related fields including psychology, linguistics, archeology and even history.
This latter tendency leads to spectacular battles in the associated literature and in academia often crossing generations of scientists (ref: Leakey family). IMS
Mary Leakey debunked several feral child myths in her time.
Citations abound but Anthro I classes often include:
Samuel de Champlain an early French explorer and ethnologist in North America.
Napoleon Chagnon modern ethnologist who studied and lived among Yanomami Amazon culture documented in 1968
Yanomamo:The_Fierce_People
Anthropology students often study local tribes and early cultures. I attended schools in San Francisco Bay Area, so studied
Ohlone culture including a fascinating short textbook "The Ohlone Way" written by
Malcom Margolin. Have fun.
