False positives and false negatives: is the answer relatively simple?

As we await the release of the forthcoming DSM-5 and the development of the ICD-11, issues pertaining to the classification and diagnosis of mental disorders have become more prominent. With criticism and anticipation abounding, pertaining to the modification, or lack of, of the diagnostic criteria of mental disorders, have we become overly focused upon the diagnostic criteria to the detriment of 'good' clinical practice?