[The creation of an instrument to determine competency to stand trial].
OBJECTIVE
To create an instrument to determine the mental disorder offenders' competency to stand trial, which is according with the Chinese legal system.


METHODS
Integrating the foreign instruments and the Chinese criminal jurisprudence, and combing the authors' forensic psychiatric experience, the research team created an instrument which was called Competency to stand trial Determining Instrument firstly, then used the instrument in practice, 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
Split-half and homogeneity reliability of the instrument is 0.9366 and 0.9213 respectively, the correspondence of the conclusion between the instrument and the expertise is 0.704. Except the sensitivity is 0.6097, all the other diagnostic index are over 0.80.


CONCLUSIONS
The Competency to stand trial Determining Instrument is feasible.
Zhang
Qin-ting
QT
West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
Zhang
Wei
W
Huo
Ke-jun
KJ
D005104:Expert Testimony; D005555:Forensic Psychiatry / Q000331:legislation & jurisprudence / Q000379:methods*; D006801:Humans; D016743:Mental Competency / Q000331:legislation & jurisprudence / Q000592:standards*; D001523:Mental Disorders / Q000523:psychology*; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires