Abstract: Naive physics, naive biology and naive psychology are suggested to be the core domains of the development of kinderganden’s naive theory. Rearchers, who mean to use theory theory to discribe cognition development, claimed that a body of knowledge must have three properties. First it must specify a set of ontology, second it must use causal principles which is likewise unique to the theory’s domain. Finally, there must comprise a system of interrelated concepts and beliefs. This article introduced recent researches about whether kindergandens can differiciate and limit causal principles of different domains, and suggested some issues that should be solved in the future.

Key words: causal cognition, naive theory, core domain.