“…For example, depressive symptoms are signifi cantly related to emotionally laden nicotine withdrawal symptoms (e.g., depressed mood; Breslau et al, 1992;Pomerleau et al, 2000), whereas anxiety symptoms are signifi cantly associated with hyperarousal (e.g., anxiety, irritability; Breslau et al, 1992;Pomerleau et al, 2000). More recently, studies disassembling the various psychopathologic components of depression symptoms have identifi ed anhedonia-defi ned as the experience of diminished interest, drive, and overall positive affect (Watson et al, 1995)-as a particularly relevant explanatory dimension of depression with regard to certain smoking characteristics (e.g., craving; relapse; see Ameringer and Leventhal, 2010, for a review). Thus, to better isolate the role of depression in nicotine withdrawal, it may be useful to focus on the anhedonic component of depressive symptoms rather than broader, more heterogeneous depressive symptom constructs that incorporate a wide variety of features (e.g., appetite/weight changes, sleep problems, guilt/ worthlessness, and/or sadness), because a focus on the latter may obfuscate depression-withdrawal relationships.…”