By Margaret Lowenfeld

For the past twenty years, we have been studying children by methods the aim of which was to enable the children to talk, as it were, without the use of language. A careful and detailed analysis of the productions the children have made with materials specially detailed for their use has brought to light a part of the human psyche, which has not been previously described. To this the name of the Primary System has been given, since it is a systematised region of the psyche, appears first and remains for life in the core of the psyche. It is with this system that the following paper deals.