An Experimental Investigation of the Relationship Between Emotion Regulation Flexibility, Negative Affect and Posttraumatic Stress Disorder.

Purpose: Emerging research investigating mechanisms underpinning PTSD has identified emotion regulation (ER) flexibility - the ability to flexibly use ER strategies according to contextual demands - as one promising mechanism. To date, however, no study has investigated whether brief training in ER flexibility can minimise negative affect elicited from evocative stimuli. This study investigated the impact of instructed ER flexibility on emotional responding in probable PTSD.

Methods: Participants ( 148) viewed images that differed in negative emotional intensity (high or low). For each image, participants followed instructions to adopt either a flexible or inflexible ER approach through randomisation to either an condition or one of three control conditions (, , ). In the condition, participants were instructed to switch between distraction and reappraisal according to the emotional intensity of the image. The control conditions required participants to either employ a single ER strategy ( and ) or switch between strategies in a way that did not align with image intensity (). Negative affect was rated after each image.

Results: Participants with probable PTSD in the condition demonstrated the lowest levels of negative affect. For participants without probable PTSD, negative affect did not differ between the ER conditions.

Conclusions: Findings suggest that individuals with probable PTSD benefitted from being instructed in ER flexibility. This finding supports the adaptiveness of ER flexibility and provides a preliminary temporal link between instructed ER flexibility and improved emotional responding for those with PTSD.

Supplementary Information: The online version contains supplementary material available at 10.1007/s10608-024-10536-3.