Close Elections Create Wide Divisions
Researchers at Carnegie Mellon's Tepper School of Business have studied voter behavior and found that when contests are perceived to be highly competitive, voters on both sides of the political spectrum tend to favor candidates who are more strongly conservative or liberal, contradicting conventional wisdom.
"We found that when people believe that there is greater competition between their group and another group, they want to make clear what the differences are between the two groups. To make the distinction between the two groups clear, they choose leaders who are extreme in their views," said Rosalind Chow, associate professor of organizational behavior and theory.
Factories Won't Solve High Cost of Electric Cars
Carnegie Mellon researchers have found that the cost savings associated with manufacturing a high volume of batteries for electric vehicles may be nearly exhausted. Mass production lowers cost, say the researchers — but only up to a point.
"We found that battery economies of scale are exhausted quickly, at around 200-300 MWh (megawatt hours) of annual production. That's comparable to the amount of batteries produced for the Nissan Leaf or the Chevy Volt last year," said Engineering Professor Jeremy Michalek. "Past this point, higher volume alone won't do much to cut cost."
Danks Explains the Thought Process
Everyday thinking — like reading this sentence to deciding which shirt to wear — requires an astounding range of brain activity, yet cognition seems to happen seamlessly.
In “Unifying the Mind: Cognitive Representation as Graphical Models,” CMU's David Danks outlines a new cognitive architecture that explains two aspects of the human thought process: the ability to pay attention to only things that matter; and to use many different types of cognition to learn and reason about our world.