Final answer:
The adult engaged with the child who said "cookie" by confirming and expanding on the utterance. To further enhance language development, the adult could use richer vocabulary, mimic diverse cultural socialization methods, and present varied language exposure in both social contexts and structured learning environments.
Step-by-step explanation:
When describing what happened and what the child said, we can imagine a scene where a child interacts with an adult to learn about language. In this scenario, let's say the child pointed to an object and said "cookie," expressing identification or a request. The adult, aiming to promote language development, may have responded by confirming and expanding upon the child's utterance, "Yes, that's a cookie! It's round and sweet." This response is delivered in a clear, affirmative, and slightly elevated tone to ensure engagement.
In order to better promote the child's language development, the adult could embody principles from language acquisition and socialization research. Rather than solely using motherese or simplified baby talk, the adult might integrate a richer vocabulary, model proper sentence structure, and use the child's one-word utterances as a springboard for introducing new concepts and phrases. Additional methods include engaging the child in diverse social interactions and providing a linguistic environment rich in both quantity and quality of language exposure.
Moreover, the adult could adopt techniques from studies showing benefits in language socialization within different cultures, and even consider implementing activities from specialized preschool programs designed to increase language exposure. Regular and direct conversations that are context-rich and incorporate code switching could also contribute to advanced language learning.