Sensitization tends to occur most often with:

Sensitization occurs when an organism's response to a stimulus increases after repeated exposure to that stimulus, particularly when the stimulus is strong or intense. This heightened response can happen when the stimulus elicits a significant emotional reaction, causing the subject to become more reactive over time.

Intense emotional responses trigger the body's stress system, enhancing awareness and sensitivity to that stimulus. As a result, the individual may respond more intensely in future encounters with that stimulus. This is particularly evident in cases of trauma or extreme stimuli, where the initial experience significantly impacts future behavior and reactions.

In contrast, weak stimuli typically do not provoke strong emotional responses, leading to habituation instead of sensitization, where the organism learns to ignore the stimulus over time. Thus, stimuli that elicit intense emotional responses are the primary catalyst for sensitization.