We found a lower overall rate of mental disorders (58%) than Frierson and Finkenbine (91%) (17). The observed lower prevalence of axis I diagnoses in general and of model fit. Furthermore, a model including demographic/ historical and clinical variables did not significantly predict a guilty verdict, suggesting that case-specific factors were more salient in these determinations. Of interest, though, is that agreeing to a guilty plea was positively associated with a past history of mental illness but inversely related to a past history of violent crime. Sentences for defendants with an axis I diagnosis, particularly of a substance use disorder, tended to be longer. These findings raise questions regarding potential biases toward mentally ill individuals in plea offers and sentencing practices.