Other shortcomings of the BDI are its controversial factorial validity, and poor discriminant validity against anxiety.
Shortcomings of the BDI are its high item difficulty, lack of representative norms, and thus doubtful objectivity of interpretation, controversial factorial validity, instability of scores over short time intervals (over the course of 1 day), and poor discriminant validity against anxiety.
The natural history of GAD being chronic, its controversial nosologic validity over the past 20 years, and the relatively recent interest in its independent impact and treatment in primary care may have contributed to its low rate of recognition [ 8, 10, 22].
Dear Roger I thank you very much for giving me the opportunity to start this discussion about a very controversial matter, the validity of the use of non-human primates in medical research, a subject in which, as a medical research charity, the Dr Hadwen Trust is particularly interested.
This could look as controversial for the validity of the methods.
A number of morphological and physiological indices for measuring condition have been devised, although the interpretation of these measures is often controversial and their validity frequently questioned [ 3].
Points were considered only within the distribution range normally cited for Chile and Argentina [ 4, 5], since records of the southern area are controversial and their validity is unclear [ 41, 43].
As far as observational studies are concerned, most of the quality scoring remained controversial with lack of validity.
Observations of long-term depression in parallel fiber inputs have provided support for theories of this type, but their validity remains controversial.
As mentioned in the Introduction, one of controversial issues concerning the validity of mouse TB models is lung tissue hypoxia which was claimed not to develop in M. tuberculosis-infected mice [7], [8], inspiring usage of murine M. avium infection for modeling human TB granuloma [12], [13].
