The tendency to automatically give more weightage, attention and meaning to the negative aspects of any event or situation is called Negative Bias.
A 2008 study by the American Psychological Association (APA) found that we tend to react towards or be curious about the negative experiences and stories around us, considerably more than the positive ones.
"Patient Five" was in his late 50s when a trip to the doctors changed his life. He had diabetes, and he had signed up for a study to see if taking a "statin" - a kind of cholesterol-lowering drug - might help. So far, so normal.
People with lower cholesterol levels are more likely to die violent deaths.
If you put primates on a low-cholesterol diet, they become more aggressive. Lowering animals’ cholesterol seems to affect their levels of serotonin. Even fruit flies start fighting if you interfere with their serotonin levels.
Studies have linked serotonin levels in people to violence, impulsivity, suicide, and murder.
In a randomized controlled trial, statins were found to increase aggression in post-menopausal women though, oddly, not in men. Giving statins to Nile tilapia made them more confrontational and altered the levels of serotonin in their brains.
Why do we love to watch scary horror films? Some psychologists claim people go to horror films because they want to be frightened or they wouldn't do it twice. You choose your entertainment because you want it to affect you. But what else does the literature tell us about the psychology of horror movies?