Methodology of CLA (Child Language Acquistion)

Investigation:
The natural code-switching of bilingual children

Young bilingual children can confidently switch between one langauge to another, especially if one parent predominatly speaks one and the other speaks another e.g: a mother who speaks Punjab and a father who speaks English predominatly.

Investigation type:
To investigate this claim, I would conduct a longitudinal study of how different ages of children process the information necessary to switch from language to another but also if age is an important factor to see, how fast the children can code-switch but also how fast they can learn the basics of both languages respectively.

Method:
Take 4 children who all speak English but their home language or first langauge may be something else
Examples: French and English speaker; Punjabi and English speaker; Polish and English speaker; Somali and English speaker; Yoruba and English speaker.