Both of these list categories of disorder and provide standardized criteria for diagnosis. They have deliberately converged their codes in recent revisions so that the manuals are often broadly comparable, although significant differences remain. Other classification schemes may be used in non-western cultures, for example the "Chinese Classification of Mental Disorders", and other manuals may be used by those of alternative theoretical persuasions, for example the "Psychodynamic Diagnostic Manual". In general, mental disorders are classified separately from neurological disorders, learning disabilities or intellectual disability.