Not very psychological at all.
My middle child hates mayonnaise, mustard, and salad dressing. Anytime he eats any of them by accident --- for example if McDonalds decides to give him a hamburger with mustard on it, and he doesn't check first (though now days he always checks) he simply can't eat it. He nearly throws up from the taste.
If it were psychological then you'd expect him to eat the sandwich happily without knowing it had mustard on it.
Now you might suggest that he knows because of the taste. But it suggests that it's the taste he doesn't like, and not the psychological effect
Pickiness is an evolutionary trait designed to help us survive. Now if you force yourself to eat things again and again, you may develop a palette for them. But there's nothing wrong with being picky.
My middle child hates mayonnaise, mustard, and salad dressing. Anytime he eats any of them by accident --- for example if McDonalds decides to give him a hamburger with mustard on it, and he doesn't check first (though now days he always checks) he simply can't eat it. He nearly throws up from the taste.
If it were psychological then you'd expect him to eat the sandwich happily without knowing it had mustard on it.
Now you might suggest that he knows because of the taste. But it suggests that it's the taste he doesn't like, and not the psychological effect
Pickiness is an evolutionary trait designed to help us survive. Now if you force yourself to eat things again and again, you may develop a palette for them. But there's nothing wrong with being picky.
"Tradition" is just a word people use to make themselves feel better about being an asshole.
