The principal advantage of studying psychometric test use is that it may be able to provide realistic indications of the demand for skills among test users because employers are having to pay sizeable amounts of money in order to use the tests. The main problems at the moment are the lack of previous work in the field and the absence of detailed data on psychometric testing practices. In particular, there is almost no evidence of the specific skills which employers are aiming to assess when they make use of psychometric tests and hence we cannot as yet make inferences from test use as to which skills are in demand. Much further research and data-collection is needed.