What do inter and intra mean by Vygotsky's theory of development?

Im doing an essay on development by vygotsky and was wondering how i would explain development in terms of his two lines of development; inter and intra.


does anyone know the difference, and what they say?|||Vygotsky believed that cognitive development first occured in a social context (among people) which he described as "inter" and subsequently within the individual, which he described as "intra".





Here is an actual quote from Vygotsky "Every function in the child's cultural development appears twice: first, on the social level, and later, on the individual level; first between people (inter psychological) and then inside the child (intra- psychological). This applies equally to voluntary attention, to logical memory, and to the formation of concepts. All the higher functions originate as actual relationships between individuals."