A word about groups (categories), levels and boundaries. These notions really must be approached with a certain amount of flexibility. Boundaries between various groups and various abstraction levels should be thought of as somewhat 'soft' or 'semi-permeable'. The eight skill segments should be thought of as loosely-coupled and partially overlapping rather than mutually exclusive and unrelated.
Primary skill groups found in other classification systems have been subsumed within the eight segments. Popular groups often used in other systems include: ADMINISTRATION & STAFF, MARKETING, ENGINEERING, SCIENTIFIC & TECHNICAL, MANUFACTURING, SERVICE & SUPPORT and the like. The HURIS® Skills Directory includes all these skill groups, but they are found at lower levels in the classification hierarchy.
At the next level, the primary skill categories have been analyzed into secondary categories or sub-categories which are less general and less abstract. We refer to these sub-categories as clusters. Again the effort has been made to be comprehensive and inclusive, to select clusters that encompass as many skill types as possible. About fifty-six (56) skill clusters have been identified.
Skill clusters have been identified within some segments such as ACADEMIA or BUSINESS and not within others such as HEALTHCARE or GOVERNANCE. It should not be inferred that skill clusters could not or should not be found within these segments. Clearly it is possible, but we simply have elected not to do so at this juncture. A cursory review of the HEALTHCARE skills, for example, will reveal that at least thirty branches of medicine and related specialties are readily identifiable. Judgment and, no doubt, some degree of arbitrariness are involved in deciding which groups should be named formally as clusters.
Recall that providing a simplified overview of human capabilities and pursuits is of key importance. As discussed earlier, the problem of scope vs. resolution always will be present when one is deciding how much detail is relevant at a particular level. We have tended not to name as clusters those which would basically represent sub-disciplines of well-established fields like medicine, engineering and law. They are quite easy to locate within the Directory without their being designated as formal skill clusters. On the other hand we have tended to include