This work makes the claim that strategies of knowledge acquisition may vary significantly across (as well as within) individuals and can be conceptualized within a developmental framework. In this Monograph, knowledge acquisition is examined as a process involving the coordination of existing theories with new evidence. Central to the present work is the claim that strategies of knowledge acquisition may vary significantly across (as well as within) individuals and can be conceptualized within a developmental framework. In this Monograph, knowledge acquisition is examined as a process involving the coordination of existing theories with new evidence. Central to the present work is the claim that strategies of knowledge acquisition may vary significantly across (as well as within) individuals and can be conceptualized within a developmental framework.