Criminal offenders have a high rate of personality disorders (PDS), especia
lly Antisocial Personality Disorders and psychopathy, but criminal acts are
not necessarily the result of PD. Findings from psychiatric research sugge
st that the development of PD is influenced by genetic factors, that can re
sult in deviant traits in temper, emotionality and cognitive style. There i
s general agreement that those peculiarities and vulnerabilities find their
expression and structure only under a complex interplay of stimulating or
impairing environmental influences. Do these genetic factors-or other facto
rs-diminish a person's criminal responsibility? There is no difficulty in d
iagnosing PDs, but the challenging questions arise in forensic assessments
of defendants for criminal responsibility who have a PD.
This article discusses the German legal situation and special problems crea
ted by the term of "diminished" criminal responsibility. In contrast to the
Angle-American legal situation, the German criminal law obliges the court
to order an indeterminate forensic-psychiatric confinement, in addition to
punishment, if the offender had acted under diminished criminal responsibil
ity and is now still considered to be dangerous. The convicted offender rem
ains under the control of the criminal court during psychiatric hospitaliza
tion. The change from handling the personality disordered offender as a cri
minal to handling him as someone with a mental disorder creates a social op
tion for extended state interventions, including indeterminate hospitalizat
ion. Copyright (C) 2000 John Wiley & Sons, Ltd.