Abstract
In 1975, sweeping changes were made in the procedures for dealing with insanity defenses in Michigan. The effects of these changes are examined by a comparison of the populations of insanity acquittees before and after 1975. The results reveal that there has been a nonsignificant increase in total number of insanity acquittals since 1975. However, there has been a significant change in the distribution of crimes for which defendants have been found insane. Specifically, the number of insanity acquittals for homicide has decreased, while the number for less serious offenses has increased. Possible explanations for these findings are explored.
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