Table 3.

Materials for cocaine-related cue-induction procedure.

•A set of 10 × 15 cm printed colour photographs (about 4–6) taken by the participant using a provided digital camera of external locations s/he judges are related to cocaine in their local area (e.g. streets, pubs, meeting places, ATMs, places used for drug taking) [For privacy, the participant will be instructed to not photograph any person];

•A short, specific (time/place) verbatim description from the audio-record in which the participant describes a specific recent situation, and their report of mental images, verbal thoughts, affect, physical sensations, expectancies and actions to the point of using cocaine (∼200 words; printed on A5 card);

•A set of 10 × 15 cm colour photographs (about 4–6) taken by the participant of internal places and objects related to cocaine in their home (e.g. rooms, tables, chairs, drug cocaine wraps, pipes and other paraphernalia);

•A set of cocaine-related objects (about 2–6 items, according to cocaine form and route of administration (e.g. used drug wraps [bags, ‘cling’ film], bank notes, pipes, lighters, needles/syringes, injection equipment);

•An audio-track to be played during the cue-induction procedure which will include sounds the participant recalls are present during a recent cocaine use episode (e.g. TV show, track playing on radio, sounds from the street, and 1–3 brief (∼10 s) excepts from the assessment sessions in which the participant describes craving experiences.

These materials will be placed in an opaque card box (30 × 23 × 8 cm) using a sheet of A4 card to separate the materials in the container in the above order (i.e. external images at the top and objects at the bottom).