caa a22 4500 386354006 CHVBK 20180307111844.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.1017/S0033291700011016 doi S0033291700011016 pii (NATIONALLICENCE)cambridge-10.1017/S0033291700011016 Kendell R. E. University Department of Psychiatry, Royal Edinburgh Hospital, Edinburgh Clinical validity [Elektronische Daten] [R. E. Kendell] Few psychiatric disorders have yet been adequately validated and it is still an open issue whether there are genuine boundaries between the clinical syndromes recognized in contemporary classifications, or between these syndromes and normality. In the long run validation depends on the elucidation of aetiological processes. There are, however, a number of strategies which clinicians could use, but at present rarely do, in order to improve and validate existing classifications. Most of these involve studying populations which have been deliberately chosen to represent a broader grouping than a single diagnostic category, or even a group of related categories. Copyright © Cambridge University Press 1989 Psychological Medicine Cambridge University Press 19/1(1989-02), 45-55 0033-2917 19:1<45 1989 19 PSM https://doi.org/10.1017/S0033291700011016 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0033291700011016 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kendell R. E. University Department of Psychiatry, Royal Edinburgh Hospital, Edinburgh NATIONALLICENCE 773 0- Psychological Medicine Cambridge University Press 19/1(1989-02), 45-55 0033-2917 19:1<45 1989 19 PSM CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge