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“If you excessively avoid things that are aversive, that comes at the cost of getting rewards, finding mates, getting food, and things like that,” Kheirbek told Salon in a phone interview.

These distasteful experiences -- known as aversive cues -- and our initial reactions to them are pivotal to understanding who will become an addict, said University of Texas at El Paso biologist Travis Moschak, Ph.D.

If you stumble during a presentation, you might feel stressed the next time you have to present because your brain associates your next presentation with that one poor and aversive experience.

The participants were then asked to recontextualize the stimulus by generating new kinds of thoughts about an image to make it less aversive, before a neutral image was presented followed by another dislikable image.

"The framework by which we judge what is rewarding or aversive is fundamental to how we make medical decisions," said co-senior author Hans Breiter, a professor of computer science at UC.