Experience with urine drug testing by the Correctional Service of Canada

The Correctional Service of Canada implemented a urine drug-screening program over 10 years ago. The objective of this report is to describe the program and drug test results in this program for 1999. Offenders in Canadian federal correctional institutions and those living in the community on conditional release were subject to urine drug testing. Urine specimens were collected at correctional facilities and shipped by courier to MAXXAM Analytics Inc. laboratory. All urine specimens were analyzed for amphetamines, cannabinoids, cocaine metabolite (benzoylecgonine), opiates, phencyclidine, benzodiazepines, methyl phenidate, meperidine, pentazocine and fluoxetine by immunoassay screening (homogeneous EIA and ELISA assays) followed by GC-MS confirmation. Ethyl alcohol was analyzed when specifically requested. Alternative screening and confirmation methods with lower cut-off values were used, whenever urine specimens were dilute (creatinine <20mg/dl and specific gravity 相似文献   

Is there a magical time boundary for diagnosing eyewitness identification accuracy in sequential line‐ups?

We examined whether eyewitness identification latencies for sequential line‐up decisions indicate an optimum time boundary that reliably discriminates accurate from inaccurate decisions. Participants (N = 381) observed a crime simulation and attempted two separate identifications from target‐present or target‐absent sequential line‐ups. As has previously been found with simultaneous line‐ups, the optimum time boundary identified did not reliably discriminate accurate from inaccurate identifications for both line‐up targets. Diagnosticity for choosers was, however, much higher at very high confidence levels than at lower levels. Possible reasons for why one index of signal strength (confidence), but not another (latency), might postdict accuracy within the sequential framework were presented.     

Expert psychological testimony

Experimental psychologists increasingly are asked to give expert testimony in court, especially with regard to issues of eyewitness reliability. Whether or not experimental psychologists should give expert testimony on these matters is a controversial issue. The empirical literature suggests that potential jurors do not have a good understanding of the variables influencing eyewitness accuracy and that they cannot discriminate adequately between accurate and false eyewitness identification testimony. Experiments using expert testimony as a treatment variable, however, have not made a definitive case that expert testimony can benefit trial outcomes. The question of whether or not to give expert testimony must be broadened to consider not only the effects on verdicts but also the effects of expert testimony on the process by which verdicts are reached, the practices of police in subsequent investigations, the public's view of psychology, the practices of judges in subsequent cases, and the interaction between expert testimony and research activities.     

Rural development from the ground up: agro-food initiatives in Tasmania

Concerns about the decline of rural agricultural communities have recently refocused on new economic opportunities available in regional food production. This article analyses three on-the-ground case studies of rural development projects in Tasmania, Australia that aimed to develop new regional food opportunities. It analyses these projects to identify how local food producers can create viable economic alternatives in rural settings. The projects illustrate that the existence of regional food assets alone is not enough to guarantee economic development success: rural producers need connections into relevant knowledge networks if they are to identify and respond to new agro-food market opportunities.     

Mock-juror belief of accurate and inaccurate eyewitnesses

In response to lawyers' critiques of earlier staged-crime, mock-jury studies, 16 eyewitnesses to a staged crime were videotaped while being questioned by lawyers in a real courthouse. Accurate and inaccurate eyewitnesses were questioned by experienced or inexperienced lawyers for the prosecution and defense. Subsequently, 178 University of Alberta undergraduates served as mock-jurors and attempted to detect the accuracy of the witnesses based on their taped testimony. As in the previous research, the overall rate of belief was quite high (69%), and the subjects believed the testimony of accurate and inaccurate eyewitnesses at about the same rate (68% vs. 70%, respectively). Lawyers' experience failed to influence verdict. Confidence of the eyewitness was significantly related to belief of their testimony. The data replicate the previous findings and demonstrate that lack of expertise of the questioners does not account for the failure to detect eyewitness accuracy in this paradigm.The authors wish to thank 36 lawyers and senior law students from the Kingston area who donated their time. The research was supported by a grant to the first author from the Social Sciences and Humanities Research Council of Canada.