1b1b. Curse
A curse works similarly to the 1b1a1. Placebo effect—if someone believes they are cursed, their 1b1a. Belief can negatively impact their perception, making bad things seem more pronounced.
This illustrates how negative suggestions, much like positive placebo effects, can influence one’s reality by directing focus toward harmful or negative outcomes.
Could be interesting to research the nocebo effect, psychology of negative thinking, and self-fulfilling prophecies.