Provides a critical commentary on the state-of-the-art of research on information-processing (I-P) factors in clinical child and adolescent psychology. The articles in this special section amply demonstrate the value of the I-P paradigm as a heuristic framework for conceptualizing and studying the role(s) of cognitive factors in the etiology and maintenance of child and adolescent psychopathology. However, the current status of such research also reflects a number of limitations that warrant consideration if the potential value of the I-P paradigm is to be fully realized. Specifically, understanding the role(s) played by such factors is impeded by a variety of insufficiently addressed methodological and psychometric issues, as well as by insufficiently articulated theories regarding such factors. These issues are particularly challenging for child and adolescent psychopathology researchers because of the complexities added by development. The value of I-P theories of childhood and adolescent psychopathology will be considerably enhanced if these issues are more fully considered in future research.