Conditioned Taste Aversion (CTA) is a phenomenon where, if I get nauseous right now, it causes an aversion to whatever tastes I was exposed to a few hours earlier—not a few seconds earlier, not a few days earlier, just a few hours earlier. (I alluded to CTA above, but not its timing aspect.) The evolutionary reason for this is straightforward: a few hours is presumably how long it typically takes for a toxic food to induce nausea.
That explains why my brother no longer likes mushrooms. When we were little, he liked them and we ate mushrooms at a restaurant, then were driven through curvy mountain roads later that day with the family. He got car sick and vomited, and afterwards he had an intense hatred for mushrooms.
That explains why my brother no longer likes mushrooms. When we were little, he liked them and we ate mushrooms at a restaurant, then were driven through curvy mountain roads later that day with the family. He got car sick and vomited, and afterwards he had an intense hatred for mushrooms.