[Study of rating scale of mentally prisoner's competency to serve a sentence].
OBJECTIVE
To create an instrument to determine the mental prisoners' competency to serve a sentence, which is according with the Chinese legal system.


METHODS
Integrating the Chinese criminal jurisprudence and the authors' forensic psychiatric experience, the research team created an instrument which called Competency to serve a sentence Rating scale firstly, then used the instrument retrospectively, in the end the validity and reliability of the instrument were inspected and, through an diagnostic test, the feasibility of the instrument was evaluated.


RESULTS
Homogeneity reliability of the instrument is 0.8779, the correspondence of the conclusion between the instrument and the expertise is 0.909, except the positive likelihood ratio is 0.0683, the other diagnostic index are better.


CONCLUSIONS
The Competency to serve a sentence Rating Scale is feasible.
Huang
Fu-yin
FY
Institute of Forensic Science, Ministry of Justice, P. R. China, Shanghai 200063, China.
Zhang
Qin-ting
QT
Lu
Cheng-rong
CR
D000328:Adult; D005104:Expert Testimony; D005260:Female; D005555:Forensic Psychiatry; D006801:Humans; D008297:Male; D016743:Mental Competency; D001523:Mental Disorders / Q000175:diagnosis / Q000523:psychology; D028642:Persons with Psychiatric Disorders / Q000331:legislation & jurisprudence* / Q000523:psychology; D011329:Prisoners / Q000523:psychology*; D011569:Psychiatric Status Rating Scales; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D055815:Young Adult