The private studies that hamis and his friends have made.in their discussion was on the child's language development.what specifically components of language have they discussed ?

In their discussion on the child's language development, Hamis and his friends have likely discussed various components of language, including:

1. Phonology: The study of the sounds used in a language and how they are combined to form words.

2. Morphology: The study of the structure of words and how they are formed from smaller units called morphemes.

3. Syntax: The study of the rules that govern how words are combined to form sentences.

4. Semantics: The study of the meaning of words and how they are used in context.

5. Pragmatics: The study of how language is used in social contexts and how meaning is influenced by factors such as tone of voice and body language.

6. Discourse: The study of how language is used to create coherent and meaningful texts, such as stories or conversations.

By discussing these components of language development, Hamis and his friends can gain a better understanding of how children acquire language skills and how they can support and encourage this development.

The text does not mention any private studies conducted by Hamis and his friends on child language development. So I cannot answer this question from the provided context.