This article describes the perceived bases for determinations of dange
rousness regarding a representative sample of patients, primarily insa
nity acquittees, confined on the grounds of ''dangerousness'' (and men
tal disorder) at a secure forensic facility. Accordingly, the article
seeks to elucidate various considerations that often are - and perhaps
should be - involved in clinical assessments of dangerousness regardi
ng the population under consideration, and the various forms by which
perceived - and judicially determined - dangerousness manifested itsel
f in the study population. Some possible implications of the findings
for certain policies regarding the confinement of mentally disordered
individuals - particularly insanity acquittees - on the grounds of ''d
angerousness'' are also discussed.