 Emphasizing the dynamic character of theorizing, STT maintains that we start life with a basic theory of mind which we actively develop throughout our childhood and adolescence. In particular, the concept of belief is thought to be constructed by each child, individually, during ontogeny (Gopink 1988, 1990). In most cases, children who follow a typical developmental pattern succeed in adding the concept of a false belief to their ToMs by around the age of four and they continue to enhance their understanding of belief even beyond this stage—making further, less radical, changes to their ToM as they become young adults (Gopnik 2004). Empirical findings arising from false belief studies and methodological questions about such protocols are extensively discussed in  Section 3.2.