Abstract
Suggests 5 blocks to a full utilization of the expertise literature and other constructs in practitioner development. These blocks are: (a) the need to go beyond the cognitive realm to the working alliance for the fundamental construct in the domain, (b) the need to realize that the novice-to-expert path takes a long time—perhaps 15 yrs—to travel; (c) the inappropriate use of a short experience differential in comparative studies of novices and experts; (d) the importance of reflection for development; and (e) the need for professors, in order to be experts, to also be practitioners in the domain.