Events

ADOLESCENT SUICIDAL RISK ASSESSMENT IN CLINICIAN-PATIENT INTERACTION: A STUDY OF VERBAL AND ACOUSTIC BEHAVIORS

December 7, 2014 | South Lake Tahoe, NV and CA

Speaker: Stefan Scherer
Host: 2014 IEEE Spoken Language Technology Workshop (SLT 2014)

Suicide among adolescents is a major public health problem: it is the third leading cause of death in the US for ages 13-18. Up to now, there is no objective way to assess the suicidal risk, i.e. whether a patient is non-suicidal, suicidal re-attempter (i.e.repeater) or suicidal non-repeater (i.e. individuals with one suicide attempt or showing signs of suicidal gestures or ideation). Therefore, features of the conversation including verbal information and nonverbal acoustic information were investigatedfrom 60 audio-recorded interviews of 30 suicidal (13 repeaters and 17 non-repeaters) and 30 non-suicidal adolescents interviewed by a social worker. The interaction between clinician and patients wasstatistically analyzed to reveal differences between suicidal vs.non-suicidal adolescents and to investigate suicidal repeaters’behaviors in comparison to suicidal non-repeaters. By using a hierarchical ensemble classifier we were able to successfully discriminate non-suicidal patients, suicidal repeaters and suicidal non-repeaters.