A review of the polygraph: history, methodology and current status

The history of research into psychophysiological measurements as an aid to detecting lying, widely known as the ‘lie detector’ or polygraph is the focus of this review. The physiological measurements used are detailed and the debates that exist in regards to its role in the investigative process are introduced. Attention is given to the main polygraph testing methods, namely the Comparative Question Test and the Concealed Information Test. Discussion of these two central methods, their uses and problems forms the basis of the review. Recommendations for future research are made specifically in regards to improving current polygraph technology and exploring the role of the polygraph in combination with other deception detection techniques

Adapting the Crisis Intervention Team (CIT) Model of Police-Mental Health Collaboration in a Low-Income, Post-Conflict Country: Curriculum Development in Liberia, West Africa

Objectives. We sought to develop a curriculum and collaboration model for law enforcement and mental health services in Liberia, West Africa. Methods. In 2013 we conducted key informant interviews with law enforcement officers, mental health clinicians, and mental health service users in Liberia, and facilitated a 3-day curriculum workshop. Results. Mental health service users reported prior violent interactions with officers. Officers and clinicians identified incarceration and lack of treatment of mental health service users as key problems, and they jointly drafted a curriculum based upon the Crisis Intervention Team (CIT) model adapted for Liberia. Officers\u27 mental health knowledge improved from 64% to 82% on workshop assessments (t = 5.52; P \u3c .01). Clinicians\u27 attitudes improved (t = 2.42; P = .03). Six months after the workshop, 69% of clinicians reported improved engagement with law enforcement. Since the Ebola outbreak, law enforcement and clinicians have collaboratively addressed diverse public health needs. Conclusions. Collaborations between law enforcement and mental health clinicians can benefit multiple areas of public health, as demonstrated by partnerships to improve responses during the Ebola epidemic. Future research should evaluate training implementation and outcomes including stigma reduction, referrals, and use of force