A. Degia , R. Meadows , S. Johnsen , P. Dixon , I. Hindmarch , J. Boyle
{"title":"Investigation into the suitability of a portable psychometric device to be used in the field: An illicit drugs field investigation","authors":"A. Degia , R. Meadows , S. Johnsen , P. Dixon , I. Hindmarch , J. Boyle","doi":"10.1016/j.jcfm.2005.11.007","DOIUrl":null,"url":null,"abstract":"<div><p><em>Rationale:</em> Driving performance is easily disrupted as a direct consequence of the use of alcohol, licit and illicit drugs. The use of such drugs has a high degree of correlation with increased accident risk. Europe wide research projects into drugged driving have called for the development of a portable objective device capable of screening those impaired through drug use which can be used at the roadside. <em>Objective:</em> This study investigated the cognitive and psychomotor performance of a cohort of polydrug drug users in field conditions. Volunteers completed a psychometric test battery on a hand held device in music festival conditions. The test battery comprised a critical tracking task (CTT) and a sustained attention to response task (SART). Volunteers also took a breathanalyser and provided a saliva sample for a DOA screen. <em>Results</em>: On the CTT significance was observed for tracking error following response to a peripheral stimulus in the high alcohol (>80<!--> <!-->mg/100<!--> <!-->ml) illicit drug group (<em>p</em> <!-->=<!--> <!-->0.0090) and approached significance for the low alcohol (<80<!--> <!-->mg/100<!--> <!-->ml) illicit drug group (<em>p</em> <!-->=<!--> <!-->0.088). For the SART, incorrect presses to the target stimulus was impaired for volunteers in both the low (<80<!--> <!-->mg/100<!--> <!-->ml) alcohol illicit drug group (<em>p</em> <!-->=<!--> <!-->0.0080) and the high alcohol (>80<!--> <!-->mg/100<!--> <!-->ml) illicit drug group (<em>p</em> <!-->=<!--> <!-->0.0415). Discrimination analysis demonstrated that the impairment device was able to discriminate between those individuals who had consumed neither alcohol nor drugs (94.12%), those in the low alcohol drug group (46.67%) and those in the high alcohol drug group (60.00%). <em>Conclusion:</em> It is possible to derive an impairment ratio. Further research will demonstrate whether this device could significantly contribute to drug driving detection and road traffic safety.</p></div>","PeriodicalId":87101,"journal":{"name":"Journal of clinical forensic medicine","volume":"13 5","pages":"Pages 242-246"},"PeriodicalIF":0.0000,"publicationDate":"2006-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jcfm.2005.11.007","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of clinical forensic medicine","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S135311310500204X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
Rationale: Driving performance is easily disrupted as a direct consequence of the use of alcohol, licit and illicit drugs. The use of such drugs has a high degree of correlation with increased accident risk. Europe wide research projects into drugged driving have called for the development of a portable objective device capable of screening those impaired through drug use which can be used at the roadside. Objective: This study investigated the cognitive and psychomotor performance of a cohort of polydrug drug users in field conditions. Volunteers completed a psychometric test battery on a hand held device in music festival conditions. The test battery comprised a critical tracking task (CTT) and a sustained attention to response task (SART). Volunteers also took a breathanalyser and provided a saliva sample for a DOA screen. Results: On the CTT significance was observed for tracking error following response to a peripheral stimulus in the high alcohol (>80 mg/100 ml) illicit drug group (p = 0.0090) and approached significance for the low alcohol (<80 mg/100 ml) illicit drug group (p = 0.088). For the SART, incorrect presses to the target stimulus was impaired for volunteers in both the low (<80 mg/100 ml) alcohol illicit drug group (p = 0.0080) and the high alcohol (>80 mg/100 ml) illicit drug group (p = 0.0415). Discrimination analysis demonstrated that the impairment device was able to discriminate between those individuals who had consumed neither alcohol nor drugs (94.12%), those in the low alcohol drug group (46.67%) and those in the high alcohol drug group (60.00%). Conclusion: It is possible to derive an impairment ratio. Further research will demonstrate whether this device could significantly contribute to drug driving detection and road traffic safety.