General intelligence ("g") is one of the most important, and least understood, phenomena in psychometric psychology. Yet "g" is an issue that is largely ignored in cognitive studies of aptitude. In the current paper, an attempt is made to bridge the gap between psychometric data and cognitive theory, using two major performance frameworks (structural and resource/capacity frameworks). Neither framework explains all phenomena related to general intelligence. The concept of "attentional resources" is currently the most viable cognitive analog of "g". It is unlikely that "g" is merely a complete set of elementary cognitive components. More likely, intelligent performance depends on both activating resources for thought and strategies and knowledge affecting the allocation of those resources. Clearly, resources and strategies are both involved in any individual test score. It is conceivable, however, that resources are primary to "g". (TJH)