The DC 0-3R is meant to complement, but not replace, the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), and the International Statistical Classification of Diseases and Related Health Problems (ICD-10) of the World Health Organization.
Since then, it has become increasingly valued by mental health professionals, physicians, nurses, early educators, and researchers around the world, and has been published in 8 different languages in addition to the original English edition.
Revisions to the DC: 0-3 were published in 2005 to account for the evolution of the classification system from the time when it was first published in 1994.
To be addressed were certain limitations such as the lack of criteria in some of the classification categories and the need for certain clarifications.
Most importantly, new knowledge from research and clinical experience dating from almost a decade was to be incorporated.
The diagnostic process is one that is ongoing and done over a period of time.
The process includes gathering a series of information regarding the child’s behaviour and presenting problems.
The information is collected by a clinician and pertains to the child’s adaptation and development across different occasions and contexts.
According to the DC: 0-3R, the diagnostic process consists of two aspects: 1) the classification of disorders, and 2) the assessment of individuals.
The half-width of the XPS valence-band spectrum decreases when going from niobium diselenides to molybdenum diselenides under consideration.
For comparison, the similar spectra are obtained for the usual 2H polymorphous forms of niobium and molybdenum diselenides, 2H(a)−Nb Se2 and 2H(c)−Mo Se2, respectively.
For the mentioned compounds, the XPS valence-band and Nb(Mo)3d and Se3p core-level spectra are derived.