Aversive Events/Signals:

Aversive events or signals are unpleasant experiences we want to avoid or escape. An aversive signal is a hurtful, damaging (noxious) stimulus that triggers a negative/pain response. In conflict adaptation theory, conflicts are inherently (subjective) aversive signals. They motivate us (cognitive control adaptation) to strategically, flexibly shift attention from distraction. Aversive signals can be physical, psychological, or emotional cues — often from negative reinforcement/punishment. Loud noises, bright lights, strong unpleasant smells, electric shocks, extreme temperatures, or even a disapproving facial expression can all be considered aversive events depending on context — and can cause changes in behavior. They’re not always welcome and are hard to avoid, but they’re an important part of life. Unpredictable is more distressing than predictable events. Theory also says:

• Aversive stimuli, even in the absence of conflict, trigger behavior change.
• Conflict stimuli trigger affective counter-regulation — directing attention to the opposite of what’s anticipated — walking in nature to counteract stress, exercising deep breathing to counter anger.
• Aversive signals are often used to discourage unwanted behaviors by associating them with an unpleasant stimulus (behavioral modification).