**2. Method**

The present scoping review followed preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines appropriate for a scoping review. Specifically, we used the PRISMA Scoping Review checklist [25].

### **2.1 Inclusion and exclusion criteria**

Studies were included if they used an experimental design if they utilized a cuereactivity paradigm and if self-reported craving was assessed following the cuereactivity paradigm. Furthermore, the population of interest had to include individuals who had experienced a traumatic event consistent with Criterion A of a DSM-5 PTSD diagnosis [1]. Alternatively, PTSD symptoms must have been assessed for each participant. Additionally, it was required that participants report on their substance use.

We excluded studies that were not written in English, or if humans were not the research participants. We did not exclude gray literature. Specifically, we included theses and dissertations to gather the full scope of research in this area and to reduce publication bias.
