Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Canada.
Dalla Lana School of Public Health, University of Toronto, Toronto, Canada.
Drug Alcohol Rev. 2019 May;38(4):443-451. doi: 10.1111/dar.12923. Epub 2019 Mar 21.
While the perceived risks of driving under the influence of cannabis (DUIC) have been a focus of recent drug-driving research, relevant concepts from the social cognition literature have rarely been applied to inform understanding of DUIC. This study aims to expand knowledge of perceived collision risk and social influences associated with DUIC and driving after other substance use.
Semi-structured interviews were conducted with 20 participants of a remedial program for impaired drivers. Thematic analysis began with two independent coders. Early discussion of emergent themes resulted in the identification of applicable social cognition concepts, resulting in selective coding and interpretation.
Many participants identified DUIC as less risky than driving under the influence of alcohol or other drugs. Mixed perceptions regarding the dangerousness of DUIC were expressed, with some participants denying increased collision risk except among novice cannabis users. Comparative optimism bias was also expressed by participants who perceived themselves as less likely than others to be involved in a collision when DUIC. In view of normative influence, friends were generally seen as more accepting of DUIC than family, and there were indications that the opinions of others who use cannabis were regarded as more credible than the opinions of those who do not use the drug.
Comparative optimism bias and normative influence may contribute to perceived risks associated with DUIC and may, therefore, be useful concepts to employ to increase the effectiveness of public health and road safety initiatives.
尽管吸食大麻后开车（DUIC）的潜在风险一直是最近药物驾驶研究的重点，但社会认知文献中的相关概念很少被应用于理解 DUIC 和其他物质使用后的驾驶行为。本研究旨在扩展对与 DUIC 和驾驶后其他物质使用相关的感知碰撞风险和社会影响的认识。
对 20 名参加驾驶员康复计划的参与者进行了半结构化访谈。主题分析从两位独立的编码员开始。对新兴主题的早期讨论导致确定了适用的社会认知概念，从而进行了选择性编码和解释。
许多参与者认为 DUIC 的风险低于酒精或其他药物的影响。对 DUIC 危险性的看法存在混合，一些参与者否认除了新手大麻使用者外，碰撞风险会增加。在比较乐观偏见方面，参与者认为自己在 DUIC 时比其他人更不可能发生碰撞。就规范影响而言，朋友通常被视为比家人更能接受 DUIC，而且有迹象表明，吸食大麻者的意见比不吸食大麻者的意见更可信。
比较乐观偏见和规范影响可能会导致与 DUIC 相关的感知风险，因此，这些概念可能有助于提高公共卫生和道路安全倡议的有效性。
