Cultural mediation describes a profession that studies the cultural differences between people, using the data in problem solving.It is one of the fundamental mechanisms of distinctly human development according to cultural–historical psychological theory introduced by Lev Vygotsky and developed in the work of his numerous followers worldwide.'The history of child behavior is born from the interweaving of these two lines. The history of the development of the higher mental functions is impossible without a study of their prehistory, their biological roots, and their organic disposition.' (Vygotsky, 1978, p. 46)'Every function in the child's cultural development appears twice: first, on the social level, and later on the individual level; first, between people (interpsychological), and then inside the child (intrapsychological). This applies equally to voluntary attention, to logical memory, and to the formation of concepts. All the higher functions originate as actual relations between human individuals.' (Vygotsky, 1978, p. 57) Cultural mediation describes a profession that studies the cultural differences between people, using the data in problem solving.It is one of the fundamental mechanisms of distinctly human development according to cultural–historical psychological theory introduced by Lev Vygotsky and developed in the work of his numerous followers worldwide. Vygotsky investigated child development and how this was guided by the role of culture and interpersonal communication. Vygotsky observed how higher mental functions developed through social interactions with significant people in a child's life, particularly parents, but also other adults. Through these interactions, a child came to learn the habits of mind of her/his culture, including speech patterns, written language, and other symbolic knowledge through which the child derives meaning and affects a child's construction of his or her knowledge. This key premise of Vygotskian psychology is often referred to as 'cultural mediation'. The specific knowledge gained by a child through these interactions also represented the shared knowledge of a culture. This process is known as internalization.