Table 1.

The Pre-traumatic Stress Reactions Checklist (PreCL), Temporally Reversed Items

DSM-IV version
Instructions Below is a list of problems and complaints that people sometimes have before possible stressful life experiences in the future. Please read each one carefully, then circle one of the numbers to the right to indicate how much you have been bothered by that problem in the past month.
Item #	Temporally reversed formulation
1.	Repeated, disturbing imagined scenes, thoughts, or images concerning a possible stressful experience in the future?
2.	Repeated, disturbing dreams concerning a possible stressful experience in the future?
3.	Suddenly acting or feeling as if a possible stressful experience in the future already were happening (as if you were pre-living it)?
4.	Feeling very upset when something reminded you of a possible stressful experience in the future?
5.	Having physical reactions (e.g., heart pounding, trouble breathing, sweating) when something reminded you of a possible stressful experience in the future?
6.	Avoiding thinking about or talking about a possible stressful experience in the future or avoiding having feelings related to it?
7.	Avoiding activities or situations because they reminded you of a possible stressful experience in the future?
8.	Trouble imagining important parts of a possible stressful experience in the future?
DSM-5version
Instructions Below is a list of problems and complaints that people sometimes have before a possible, very stressful experience in the future. Please read each one carefully, then circle one of the numbers to the right to indicate how much you have been bothered by that problem in the past month.
Item #	Temporally reversed formulation
1.	Repeated, disturbing and unwanted images of a possible future stressful experience?
2.	Repeated, disturbing dreams of a possible future stressful experience?
3.	Suddenly acting or feeling as if a possible future stressful experience already were happening (as if you were pre-living it)?
4.	Feeling very upset when something reminded you of a possible future stressful experience?
5.	Having strong physical reactions (e.g., heart pounding, trouble breathing, sweating) when something reminded you of a possible future stressful experience?
6.	Avoiding imaginings, thoughts or feelings related to a possible future stressful experience?
7.	Avoiding external remindings of a possible future stressful experience (for example people, places, conversations, activities, objects or situations)?
8.	Trouble imagining important parts of a possible future stressful experience?
10.	Blaming yourself or someone else for a possible future stressful experience or what has led up to it?

Note: The DSM-IV version is rated on a scale from 1 to 5; the DSM-V is rated on a scale from 0 to 4; anchor points for both: ‘not at all’, ‘a little bit’, ‘moderately’, ‘quite a bit’, ‘extremely’. Both are based on the relevant PCL (Weathers et al., 1994, 2013). Both should be administered with the temporally non-reversed items included. The full scales may be obtained from the authors¹.