Objective: Clinicians' decision making about involuntary commitment wa
s examined, with a focus on the effects of patient and clinician chara
cteristics and bed availability on decisions to detain patients, the f
irst step in involuntary commitment. Methods: Eighteen psychologists a
nd social workers in the emergency service of a community mental healt
h center completed the Risk Assessment Questionnaire for 169 consecuti
ve patients they deemed to present some degree of risk. Forty-two pati
ents were detained. Results: Three underlying constructs were signific
antly associated with a patient's overall risk rating, which in turn p
redicted the decision to detain. Two were clinician characteristics: t
he clinician detention ratio, which reflects the proportion of patient
s detained by the clinician in the past three months, and the setting
in which the evaluation occurred, either an in-house emergency service
or a mobile crisis unit. The availability of detention beds in the co
mmunity was also a significant predictor of whether a patient would be
detained. No patient characteristic, including diagnosis, sex, age, o
r insurance status, was significantly related to the detention decisio
n. Co,Conclusions: The findings suggest that the decision-making proce
ss is influenced by multiple factors, such as setting, the clinician's
tendency to detain patients, and the availability of detention beds.