Cut-off point and empirical validity of psychiatric assessment scale of cognitive and volition capacity in crime / 中华行为医学与脑科学杂志

ABSTRACT

Objective To test the cut-off point and empirical validity of psychiatric assessment scale of cognitive and volition capacity for suspects in crime (PASCVC).Methods One thousand of forensic psychiatry cases from fifteen bodies of the seven administrative regions in China were collected for forensic assessment by the three scales of PASCVC,DCRRS and CRRSV in August 2009 to December 201 l.in all cases by the appraiser to make six grade judgment of the cognitive and volition capacity including completely lost,lost most,partial loss,partial loss of a small,slightly damaged and normal.Results ① Based on the results of frequency distribution table complete loss of demarcation divided ＜ 56 minutes,lost most 57-66,partial loss 67-76,partial loss of a small 77-87,slightly damaged 88-100 and normal ≥ 101.②The correlation coefficient of six demarcation point grading assessment results and expert opinion was 0.939(P＜0.001).③PASCVC consistency with DCRRS and CRRSV,the Kappa values were 0.838 and 0.835 respectively(P＜0.001).④Discriminant function were established by two methods of PASCVC and expert assessment,the correct rates of PASCVC and expert judgment on back substitution determine were 86.9％ and 85.1％.Two kinds of classification results,the Kappa value of 0.857 (P＜0.001).Conclusion PASCVC has good empirical validity,and can be used as an objective assessment tool for forensic assessment of criminal cognitive and volition capacity.