Emotional Contagions in Social Networks

These results highlight several features of emotional contagion. First, because News Feed content is not “directed” toward anyone, contagion could not be just the result of some specific interaction with a happy or sad partner. Although prior research examined whether an emotion can be contracted via a direct interaction (1, 7), we show that simply failing to “overhear” a friend’s emotional expression via Facebook is enough to buffer one from its effects. Second, although nonverbal ...

 Sugar Impacts Learning

The DHA-deprived rats also developed signs of resistance to insulin, a hormone that controls blood sugar and regulates synaptic function in the brain. A closer look at the rats' brain tissue suggested that insulin had lost much of its power to influence the brain cells. "Because insulin can penetrate the blood–brain barrier, the hormone may signal neurons to trigger reactions that disrupt learning and cause memory loss," Gomez-Pinilla said. He suspects that fructose is the culprit behi...

 Organic Chemists Merely Increase the Probability of Results

It is, I believe, justifiable to make the generalization that anything an organic chemist can synthesize can be made without him. All he does is increase the probability that given reactions will 'go.' So it is quite reasonable to assume that given sufficient time and proper conditions, nucleotides, amino acids, proteins, and nucleic acids will arise by reactions that, though less probable, are as inevitable as those by which the organic chemist fulfills his predictions. So why not self-dupli...

 Babies Look to Mothers for Cues on How to React to the World

Other experiments also show that one-year-olds have a radically new understanding of people. What happens when you show a baby something new, something a little strange, maybe wonderful, maybe dangerous—say, a walking toy robot? The baby looks over at Mom quizzically and checks her out. What does she think? Is there a reassuring smile or an expression of shocked horror? One-year-olds will modify their own reactions accordingly. If there's a smile, they'll crawl forward to investigate; if th...