Discovered: Money straight from the mint is more likely to be saved; brains respond well to harmony; shedding light on dark energy; human ancestors started eating grass 3 million years ago.
Crisp money less likely to be spent. This goest against everything we ever learned from rap videos where crisp Benjamins fly out of hands like so much confetti, but apparently the newer a bill is, the less likely people are to spend it. The team of researchers from the University of Winnipeg and the University of Guelph who came to this conclusion also found the converse to be true—the grubbier paper money is, the more people try to get rid of it. "The physical appearance of money can alter spending behavior," write lead authors Gabrizio Di Muro and Theodore J. Noseworthy. "Consumers tend to infer that worn bills are used and contaminated, whereas crisp bills give them a sense of pride in owning bills that can be spent around others." [University of Chicago Press Journals]
Hardwired to enjoy harmonies. Why is it that no matter how cheesy we think syrupy vocal harmonies may be, they still hit a certain musical sweet spot no other sound can hit? The answer may lie in the structure of our ears and brains, according to research led by University of Montreal psychoacoustician Marion Cousineau. Certain spacings of aural frequencies sound pleasant, while others sound dissonant. And maybe those qualities aren't just a matter of taste, but rather a physiological reaction. Cousineau and colleagues studied people with amusia (the inability to discern pitch), discovering that even they disliked music that causes normal subjects to perceive "beating," the warbling effect provoked by musical dissonance. This suggests the perception of beating isn't what makes dissonance annoying, but that it has something to do with the perception of harmonicity. [Science Now]