University of Pittsburgh, Pittsburgh, PA 15260, USA.
Addiction. 2013 Jun;108(6):1019-25. doi: 10.1111/j.1360-0443.2012.04013.x. Epub 2012 Oct 17.
Smoking cue-exposure research has provided a powerful tool for examining cravings in the laboratory. A key attraction of this method is that tightly controlled experimental procedures can model craving experiences that are presumed to relate to addiction. Despite its appeal, key assumptions underlying the clinical relevance of smoking cue-reactivity studies have been questioned recently. For both conceptual and methodological reasons it may be difficult to tease apart cue-based and abstinence-based cravings. Moreover, conventional cue-reactivity procedures typically generate levels of craving with only minimal clinical relevance. We argue here that sometimes it is unfeasible-and in some instances conceptually misguided-to disentangle abstinence-based and cued components of cigarette cravings. In light of the challenges associated with cue-reactivity research, we offer an alternative approach to smoking cue-exposure experimental research focusing on peak provoked craving (PPC) states. The PPC approach uses nicotine-deprived smokers and focuses on urges during smoking cue-exposure without subtracting out urge ratings during control cue or baseline assessments. This design relies on two factors found in many cue-exposure studies-nicotine deprivation and exposure to explicit smoking cues-which, when combined, can create powerful craving states. The PPC approach retains key aspects of the cue-exposure method, and in many circumstances may be a viable design for studies examining robust laboratory-induced cravings.
吸烟线索暴露研究为在实验室中检查渴望提供了一个有力的工具。这种方法的一个主要吸引力是,严格控制的实验程序可以模拟被认为与成瘾有关的渴望体验。尽管这种方法很有吸引力,但最近人们对吸烟线索反应研究的临床相关性的一些关键假设提出了质疑。由于概念和方法上的原因,可能很难区分基于线索和基于禁欲的渴望。此外,传统的线索反应程序通常只能产生与临床相关性极小的渴望水平。我们在这里认为,有时不可能——在某些情况下,从概念上看也是错误的——将吸烟渴望的基于禁欲和基于线索的成分分开。鉴于与线索反应研究相关的挑战,我们提供了一种替代方法来进行吸烟线索暴露实验研究,重点关注高峰诱发的渴望(PPC)状态。PPC 方法使用尼古丁剥夺的吸烟者,并且专注于吸烟线索暴露期间的冲动,而不扣除对照线索或基线评估期间的冲动评分。这种设计依赖于许多线索暴露研究中发现的两个因素——尼古丁剥夺和暴露于明确的吸烟线索——当它们结合在一起时,可以产生强烈的渴望状态。PPC 方法保留了线索暴露方法的关键方面,在许多情况下,对于研究实验室诱导的强烈渴望可能是一种可行的设计。