Fifty-one students from the University of Oxford, split into two groups, were asked to perform two arithmetic tasks over a five-day period.

BBC: Brain stimulation promises 'long-lasting' maths boost

The switch was approved in a vote by Big East university presidents in the wake of a split announced last week of the league's football schools and seven other Catholic schools that next season are forming their own basketball-focused conference with the Big East name.

NPR: Notre Dame To Join ACC Next Season

We asked University of Michigan professor of Middle East history, Juan Cole, when the split took place between Sunni and Shia Muslims.

NPR: Early Divisions at Root of Sunni-Shia Conflict

If concessions are made and an NBA team is permitted to brand itself inside and outside of the arena, the University of Louisville chooses to work with an NBA team on scheduling matters and an agreement is consummated for a split of private suite revenue, the KFC Yum!

FORBES: Why Louisville Should Top The List For An NBA Franchise

Friends since they attended the University of Missouri together in the 1960s, Kinder and Lay split after Lay apparently reneged on a deal to hand over control to Kinder.

FORBES: Ken Lay's Legacy

"It's a strange kind of split personality in the south, " says Prof Joe Coker, of University of Kentucky.

BBC: The slow death of prohibition

Andrew Smith of Cardiff University, who carried out the second study, said workers should try to avoid split-shifts and other schedule changes that put their body clocks out of kilter.

BBC: NEWS | Health | Shift work linked to health risks

Shorn of its own candidate, the governing coalition would split between the two, reckons Gaudencio Torquato, professor of politics at Sao Paulo University, making the final result unpredictable.

ECONOMIST: Brazil's election