Answer :

The psychologist who noted that talking to themselves enables children to control their behaviors and emotions and master new skills was enhanced by: Lev Vygotsky

Which of the following are true of Vygotsky's theory of development?

According to him ,  the goal of cognitive development is to become competent in your culture.  It focus upon collaborative learning. He defined 4 stages of development including infancy, early childhood, pre-school age, school age and puberty.

Vygotsky defined  three main concepts related to cognitive development:

(i) culture is significant in learning

(ii) language is the root of culture

(iii) individuals learn and develop within community.

Hence, the correct answer is Lev Vygotsky.

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