https://www.iasp-pain.org/publications/pain-research-forum/papers-of-the-week/paper/125750-placebo-and-nocebo-effects-and-operant-pain-related-avoidance-learning/
Research on learning in placebo and nocebo has relied predominantly on Pavlovian conditioning procedures. Operant learning procedures may more accurately model...
avoidance learningplacebonoceboeffectsoperant