A longstanding and fundamental debate in developmental science is whether knowledge is acquired through domain-specific or domain-general mechanisms. To date, there exists no tool to determine whether experimental data support one theoretical approach or the other. In this article, we argue that the U- and N-shaped curves found in a number of…

A practitioner's model of the processes of learning and knowing was developed through a review of global, societal, individual, and personal perspectives on learning. The first phase of the model's development consisted of using a method of exploration based on determining who, what, where, when, why, and how to investigate the following 10…