The Contemplation Ladder was designed as a continuous measure of readiness to quit smoking. It is a very brief measure, sensitive to interventions designed to enhance motivation in substance abusers. It consists of the image of a ladder with 11 "rungs" and 5 anchor statements loosely reflecting the stages of change (precontemplation, contemplation, preparation, action, maintenance). Subjects circle the "rung" that most closely matches their level of interest in changing their smoking behavior.

A multidimensional measure of tobacco dependence and smoking motives, using 68 responses to questions in 13 motivational areas that include emotional attachment to smoking, response to other smokers, smoking to relieve stress, smoking for mental stimulation, and smoking automatically. The Brief WIS-DM is comprised of 37 items that load onto 11 subscales. A study of the Brief WISDM (Smith et al, 2010) found good evidence it can be used in place of the original 68-item version if researchers desire to reduce participant assessment burden.

The Short Michigan Alcoholism Screening Test (SMAST) is comprised of 13 discriminating questions taken from the MAST, which has 25 items. It has been well-validated in primary care settings; evaluation data indicate that it is an effective diagnostis instrument and does not have a tendency to produce false positives, as does the MAST

A brief instrument for clinical and non-clinical screening to detect drug abuse or dependence disorders. It is most useful in settings in which seeking treatment for drug use problems is not the patient's stated goal. The DAST provides a quantitative index of the severity of problems related to drug abuse other than alcohol.

Expired alcohol level, used to estimate the blood alcohol concentration (BAC)

A 14-item scale for measuring the degree to which situations in one’s life are appraised as stressful. Items were designed to tap how unpredictable, uncontrollable, and overloaded respondents find their lives. The scale also includes a number of direct queries about current levels of experienced stress. Moreover, the questions are of a general nature and hence are relatively free of content specific to any sub-population group.

A 32-item scale designed to measure cravings elicited by abstinence from cigarette smoking. Items in the scale were generated to represent four theoretically and clinically distinct conceptualizations of smoking urges: (1) desire to smoke, (2) anticipation of positive outcomes from smoking, (3) anticipation of relief from nicotine withdrawal or from withdrawal-associated negative affect, and (4) intention to smoke.

A self-report scale and an observer scale for examining the severity of nicotine withdrawal symptoms in a subject. Both scales rate the severity of four symptoms related to nicotine withdrawal: "angry/irritable/frustrated," "anxious/tense," "depressed," and "restless/impatient." The self-report scale adds several others that cannot be observed by outsiders.