Do Emotions Affect Mechanical Pain Thresholds in Individuals with Chronic Pain?

The purpose of this study is to investigate if different emotional states could influence mechanical pain thresholds in individuals with chronic pain.

Participants will be randomized into 4 different groups watching different short video-clips (2.20 min). The negative emotions group will watch an uncomfortable short video containing violence and blood, the positive emotions group will watch a video containing a stand-up comedy show, the neutral emotions group will watch a video about how to paint a house, and the control group will just wait for 2.20 min, without any instructions about what to think about. Pressure pain thresholds will be measured with an algometer before and after the video-clips.