Keith M. Harris

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BACKGROUND Depressive disorders are a common form of psychiatric illness and cause significant disability. Regulation authorities, the medical profession and the public require high safety standards for antidepressants to protect vulnerable psychiatric patients. Ketamine is a dissociative anaesthetic and a derivative of a hallucinogen (phencyclidine). Its(More)
There is considerable need for accurate suicide risk assessment for clinical, screening, and research purposes. This study applied the tripartite affect-behavior-cognition theory, the suicidal barometer model, classical test theory, and item response theory (IRT), to develop a brief self-report measure of suicide risk that is theoretically-grounded,(More)
OBJECTIVE Suicidal individuals are among the most reluctant help-seekers, which limits opportunities for treating and preventing unnecessary suffering and self-inflicted deaths. This study aimed to assist outreach, prevention, and treatment efforts by elucidating relationships between suicidality and both online and offline help seeking. METHOD An(More)
Educational Leadership and Policy Studies (ABSTRACT) This project was a synthesis of studies of the disciplinary actions received by middle and high school African-American students in public schools. This synthesis was conducted for three reasons: (1) to identify and collect studies on the variables associated with the disciplining of African-American(More)
OBJECTIVES There are multifaceted views on the use of ketamine, a potentially addictive substance, to treat mental health problems. The past 15 years have seen growing media coverage of ketamine for medical and other purposes. This study examined the print news media coverage of medical and other uses of ketamine in North America to determine orientations(More)
Online relationships are increasingly central to many people's lives. As a result, there is a growing need to scientifically examine their psychosocial implications. This study developed and tested the Online Relationship Initiation Scale (ORIS) through classical and item response theory analyses to address this need. An anonymous online survey included 713(More)
BACKGROUND Social media and online environments are becoming increasingly popular and integral to modern lives. The online presentation of suicidal behaviors is an example of the importance of communication technologies, and the need for professionals to respond to a changing world. These types of behaviors, however, have rarely been scientifically(More)
The Palaearctic gall-midge genus Ozirhincus is unique among the Cecidomyiidae for its morphology and biology. Unlike most other phytophagous gall midges, species in this genus do not induce galls but develop inside achenes of Asteraceae plants. The heads of adults are characterized by an unusually elongate proboscis, the function of which is unclear.(More)
BACKGROUND Numerous suicide risk factors have been proposed but not adequately validated for epidemiology, treatment and prevention efforts. AIMS Exposures to suicidal behaviors (ESB), from family and friend suicide attempts and completions, were tested for validity as a suicidal risk factor and also for measurement and construct adequacy. METHODS An(More)